Tootfinder

Microscopic study of deformation and orientation effects in heavy-ion reactions above Coulomb barrier using the Boltzmann-Uehling-Uhlenbeck model
Yujie Feng, Huizi Liu, Yingge Huang, Fuchang Gu, Erxi Xiao, Xin Lei, Hui Wang, Jiali Huang, Long Zhu, Jun Su
https://arxiv.org/abs/2402.16019 …

Microscopic study of deformation and orientation effects in heavy-ion reactions above Coulomb barrier using the Boltzmann-Uehling-Uhlenbeck model
Background: The understanding of the impact of initial deformation and collision orientation on quasi-fission and fusion-fission reactions remains incomplete. Purpose: This article aims to explore how the orientation of deformed nuclei influences quasi-fission and fusion-fission around 1.2 VB, employing a micro dynamical method in systems with diverse shapes, namely 24Mg + 178Hf, 34S + 168Er, and 48Ti + 154Sm. Method: Utilizing the Boltzmann-Uehling-Uhlenbeck model, this study investigates quas…

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 33399 nodes and 2028834 edges.
Tags: Biological, Protein interactions, Unweighted

This https://arxiv.org/abs/2308.01434 has been replaced.
link: https://scholar.google.com/scholar?q=a

Prospects For A New Light Nuclei, Fission Fusion Energy Cycle
Future advanced nuclear rocket propulsion, and the availability of new nuclear power cycle designs, will benefit substantially from the large current investment in alternative nuclear energy that is underway today. We propose a new nuclear cycle which includes the primary fission of lithium-6, followed by secondary fusion of deuterium and tritium, and a secondary fission of lithium-7 by tritium. This cycle does not produce nuclear waste from its nuclear fuel, since all byproducts of these casca…

I’m helping to organize a #Vancouver Hack Day https://fission.social/@boris/112063682803050535
Would also be an opportunity for local

Jazz fission is when you don’t split notes.
https://mastodon.social/@mcc/112288117901035450

This https://arxiv.org/abs/2311.12540 has been replaced.
initial toot: https://mastoxiv.page/@ar…

Analysis of reactor burnup simulation uncertainties for antineutrino spectrum prediction
Nuclear reactors are a source of electron antineutrinos due to the presence of unstable fission products that undergo $β^-$ decay. They will be exploited by the JUNO experiment to determine the neutrino mass ordering and to get very precise measurements of the neutrino oscillation parameters. This requires the reactor antineutrino spectrum to be characterized as precisely as possible both through high resolution measurements, as foreseen by the TAO experiment, and detailed simulation models. I…

Words that sound/look similar but have opposite meanings. A thread. (Moved from you-know-where.)
appalling/appealing
authorization/authentication
awful/awesome
boon/bane
boost/bust
elevator/escalator
fusion/fission
hyper-/hypo-
inherent/incidental
inter-/intra-
nature/nurture
online/onsite
overt/covert
to prescribe/to proscribe
to push/to pop
stop to do X/stop doing X
sub-/super-
to pull/to push
t…

Lise Meitner helped discover nuclear fission but never won a Nobel Prize for her brilliance despite 49 nominations (Adam Barnes/Business Insider)
https://www.businessinsider.com/lise-meitner-discovered-nuclear-fission-…

Lise Meitner was nominated for Nobel Prize 49 times but never won
Lise Meitner discovered how the process of nuclear fission works but she never won a Nobel Prize and her colleague Otto Hahn downplayed her role.

The Cyber truck will look so cool in 15 or so years when they finally remake Back to the Future and use it as a the crazy failed car from an eccentric billionaire to put a fission engine in and go back in time to the late 90s.
Living with the Tesla Cybertruck So You Don't Have To! https://www.youtube.com/watch?…

Thanks Boris, this was fun. Wish I could stayed later. Hopefully the next one!
https://fission.social/@boris/112175759122778073

#QI
Via Quite Interesting @qikipedia
·
5h
Otto Hahn and Lise Meitner co-discovered nuclear fission in 1938, but in 1944 Hahn alone was awarded the Nobel Prize for the discovery. Meitner was nominated 48 times but never won.
In 1955, she was awarded the Otto Hahn Prize.

Estimating angular momenta of fission fragments from isomeric yield ratios
Zhihao Gao, Andreas Solders, Ali Al-Adili, Simone Cannarozzo, Mattias Lantz, Stephan Pomp
https://arxiv.org/abs/2402.14584

Estimating angular momenta of fission fragments from isomeric yield ratios
Purpose: To deduce the angular momenta of fission fragments based on the observed isomeric yield ratios (IYR) in 25-MeV proton-induced fission of 238U and to compare these using Wilson's model. Method: A surrogate model of GEF has been developed to generate properties of primary fission fragments. Based on the excitation energy and angular momentum of fission fragments from GEF, an energy versus angular momentum matrix is reconstructed using a set of parameters. With such matrices as input, TAL…

Percolation, fractals and the critical point in a nuclear reactor
V. V. Ryazanov
https://arxiv.org/abs/2403.12989 https://arxiv.org/p…

Percolation, fractals and the critical point in a nuclear reactor
The trajectories of neutrons in the reactor, the points of their fission of uranium nuclei, the points of neutron absorption, fission chains and chain reactions are considered from the standpoint of fractal geometry and percolation theory. In the study of the stationary critical operating mode of a nuclear reactor, models of Cayley trees and Laplacian fractals are used. This approach allows us to obtain the neutron multiplication equation and an expression for the critical size of the reactor. …

New insights on fission of 235U induced by high energy neutrons
Alice Manna, Elisa Pirovano
https://arxiv.org/abs/2403.11711 https://…

New insights on fission of 235U induced by high energy neutrons
The $^{235}$U(n,f) reaction cross section was measured relative to neutron-proton elastic scattering for the first time in the energy region from 10 MeV to 440 MeV at the CERN n\_TOF facility. Two independent detection systems were used simultaneously to extract the fission cross section. For neutron energies below 200 MeV, the present results agree within one standard deviation with the data available in literature and are well reproduced by the IAEA evaluation. Above 200 MeV, the comparison o…

Fission barriers with Weizs\"acker-Skyrme mass model
Ning Wang, Liu Min
https://arxiv.org/abs/2404.14014 https://arxiv.org/pdf/2…

Fission barriers with Weizsäcker-Skyrme mass model
Based on Weizsäcker-Skyrme (WS4) mass model, the fission barriers of nuclei are systematically studied. Considering the shell corrections and the macroscopic deformation energy, the fission barrier heights for nuclei with $Z\geqslant 82$ can be well described, with an rms deviation of 0.481 MeV with respect to 71 empirical barrier heights. In addition to the shell correction at the ground state, the shell correction at the saddle point and its relative value are also important for both deforme…

Graph fission and cross-validation
James Leiner, Aaditya Ramdas
https://arXiv.org/abs/2401.15063 https://arXiv.org/pdf/2401.15063

Graph fission and cross-validation
We introduce a technique called graph fission which takes in a graph which potentially contains only one observation per node (whose distribution lies in a known class) and produces two (or more) independent graphs with the same node/edge set in a way that splits the original graph's information amongst them in any desired proportion. Our proposal builds on data fission/thinning, a method that uses external randomization to create independent copies of an unstructured dataset. %under the assump…

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 3563 nodes and 52013 edges.
Tags: Biological, Protein interactions, Unweighted

Characteristics of the fission fragments in the three-body model of binary fission
V. Yu. Denisov
https://arxiv.org/abs/2403.11628 https://

Characteristics of the fission fragments in the three-body model of binary fission
The evaluated nuclide yields, fragment mass and charge distributions, and averaged total kinetic energy of fission fragments for the neutron-induced fission of 30 actinide nuclei are well described in the new model, which considers the fissioning scission system consisting of two heavy fragments and an alpha-particle between them. The alpha-particle has its origin in the neck nucleons. The yield of fission fragments in the model is linked to the number of states over the barrier of the saddle p…

Experimental Evidence of Direct Exchange Interaction Mediating Intramolecular Singlet Fission in Weakly-Coupled Dimers
Oskar Kefer, Pavel V. Kolesnichenko, Lukas Ahrens, Jan Freudenberg, Uwe H. F. Bunz, Tiago Buckup
https://arxiv.org/abs/2403.05163

Experimental Evidence of Direct Exchange Interaction Mediating Intramolecular Singlet Fission in Weakly-Coupled Dimers
The electronic interaction between an optically active singlet state ($S_1S_0$) and a dark state of singlet multiplicity, known as correlated triplet pair ($^1[TT]$), plays a crucial role in the effective transformation from $S_1S_0$ to $^1[TT]$ during intramolecular singlet fission (iSF). This process is understood through mechanisms such as direct exchange coupling and incoherent processes that involve super-exchange coupling through charge-transfer states. However, most insights into these m…

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 3705 nodes and 15167 edges.
Tags: Biological, Protein interactions, Unweighted

Giant Dipole Resonance photofission and photoneutron reactions in $^{238}$U and $^{232}$Th
D. Filipescu, I. Gheorghe, S. Goriely, A. Tudora, K. Nishio, T. Ohtsuki, H. Wang, G. Fan, K. Stopani, F. Suzaki, K. Hirose, M. Inagaki, Y. -W. Lui, T. Ari-izumi, S. Miyamoto, T. Otsuka, H. Utsunomiya
https://arxiv.org/abs/2402.13333…

Giant Dipole Resonance photofission and photoneutron reactions in $^{238}$U and $^{232}$Th
New measurements of photofission and photoneutron reactions on $^{238}$U and $^{232}$Th in the Giant Dipole Resonance (GDR) energy region have been performed at the laser Compton-scattering $γ$-ray source of the NewSUBARU synchrotron radiation facility using a high-and-flat efficiency moderated $^3$He detection array. The neutron-multiplicity sorting of high-multiplicity fission neutron coincidence events has been performed using a dedicated energy dependent, multiple firing statistical treatm…

Monte Carlo algorithm for calculating pre-neutron fragment mass and kinetic energy distributions from measurements using the 2E Technique for reaction 235U(nth, f)
Modesto Montoya, Miguel Roca, Mario Alvarez
https://arxiv.org/abs/2403.07880

Monte Carlo algorithm for calculating pre-neutron fragment mass and kinetic energy distributions from measurements using the 2E Technique for reaction 235U(nth, f)
An algorithm is proposed that enables the calculation of pre-neutron mass and energy distributions of fission fragments from uranium-235, induced by thermal neutrons, utilizing measurements obtained through the 2E technique. This algorithm facilitates the inference of the curve representing the average multiplicity of prompt neutrons relative to the pre-neutron mass of the fission fragments.

This https://arxiv.org/abs/2402.14584 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Estimating angular momenta of fission fragments from isomeric yield ratios
Purpose: To deduce the angular momenta of fission fragments based on the observed isomeric yield ratios (IYR) in 25-MeV proton-induced fission of 238U and to compare these using Wilson's model. Method: A surrogate model of GEF has been developed to generate properties of primary fission fragments. Based on the excitation energy and angular momentum of fission fragments from GEF, an energy versus angular momentum matrix is reconstructed using a set of parameters. With such matrices as input, TAL…

This https://arxiv.org/abs/2210.07664 has been replaced.
link: https://scholar.google.com/scholar?q=a

Stereo neutrino spectrum of 235U fission rejects sterile neutrino hypothesis
Anomalies in past neutrino measurements have led to the discovery that these particles have non-zero mass and oscillate between their three flavors when they propagate. In the 2010's, similar anomalies observed in the antineutrino spectra emitted by nuclear reactors have triggered the hypothesis of the existence of a supplementary neutrino state that would be sterile i.e. not interacting via the weak interaction. The STEREO experiment was designed to study this scientific case that would potent…

This https://arxiv.org/abs/2401.15063 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_sta…

Graph fission and cross-validation
We introduce a technique called graph fission which takes in a graph which potentially contains only one observation per node (whose distribution lies in a known class) and produces two (or more) independent graphs with the same node/edge set in a way that splits the original graph's information amongst them in any desired proportion. Our proposal builds on data fission/thinning, a method that uses external randomization to create independent copies of an unstructured dataset. %under the assump…

Functionality Optimization for Singlet Fission Rate Screening in the Full-Dimensional Molecular and Intermolecular Coordinate Space
Johannes Greiner, Anurag Singh, Merle I. S. R\"ohr
https://arxiv.org/abs/2404.03056

Functionality Optimization for Singlet Fission Rate Screening in the Full-Dimensional Molecular and Intermolecular Coordinate Space
In computational chemistry, accurately predicting molecular configurations that exhibit specific properties remains a critical challenge. Its intricacies become especially evident in the study of molecular aggregates, where the light-induced functionality is tied to highly structure-dependent electronic couplings between molecules. Here, we present an efficient strategy for the targeted screening of the structural space employing a "functionality optimization" technique, in which a chosen descr…

This https://arxiv.org/abs/2311.14397 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Measurement of fragment-correlated $γ$-ray emission from $^{252}$Cf(sf)
This paper presents recent experimental results on the yield of prompt fission $γ$ rays from the spontaneous fission of $^{252}$Cf. We use an ionization chamber to tag fission events and measure the masses and kinetic energies of the fission fragments and trans-stilbene organic scintillators to measure the neutrons and $γ$ rays emitted by the fission fragments. The combination of the ionization chamber and trans-stilbene scintillators allows us to determine the properties of neutrons and $γ$…

This https://arxiv.org/abs/2311.06598 has been replaced.
initial toot: https://mastoxiv.page/@arX…

Effects of bursty synthesis in organelle biogenesis
A fundamental question of cell biology is how cells control the number of organelles. The processes of organelle biogenesis, namely de novo synthesis, fission, fusion, and decay, are inherently stochastic, producing cell-to-cell variability in organelle abundance. In addition, experiments suggest that the synthesis of some organelles can be bursty. We thus ask how bursty synthesis impacts intracellular organelle number distribution. We develop an organelle biogenesis model with bursty de novo s…

Hot electrons and singlet-fission dark excitons modulate strong-coupling conditions in metal-organic optical microcavities
Pavel V. Kolesnichenko, Manuel Hertzog, Felix Hainer, Oskar Kefer, Jana Zaumseil, Tiago Buckup
https://arXiv.org/abs/2401.14835

Hot electrons and singlet-fission dark excitons modulate strong-coupling conditions in metal-organic optical microcavities
Polaritons, formed as a result of strong mixing between light and matter, are promising for numerous applications including organic solar cells, optical logic gates, and qubits. In low-Q organic optical microcavities, polaritonic signatures due to strong hybridization between photons and Frenkel excitons were found to decay together with the dynamics of dark excitons. A conundrum, however, remained whether dark excitons modulate exciton-photon coupling strength. It also remained unclear how dar…

This https://arxiv.org/abs/2312.04568 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Multimodality of $^{187}$Ir fission studied by Langevin approach
[Background] The fission mechanism of sub-lead nuclides remains unclear, especially the types of fission modes involved and their corresponding shell effects. [Purpose] The aim is to identify the different modes in the fission of $^{187}$Ir, and investigate the corresponding mechanism. [Method] The three-dimensional Langevin approach considering nucleus elongation, deformation, and mass asymmetry is applied to simulate fission dynamics. The macro-microscopic models are used to calculate the tra…

Tidal dissipation of binaries in asteroid pairs
Laurent Pou, Francis Nimmo
https://arxiv.org/abs/2403.07727 https://arxiv.org/pdf/240…

Tidal dissipation of binaries in asteroid pairs
Tidal dissipation in a celestial body can be used to probe its internal structure. Tides govern the orbital evolution of binary systems and therefore constraints on the interior of binary system members can be derived by knowing the age and tidal state of the binary system. For asteroids, age estimates are challenging due to a lack of direct observation of their surface. However, the age of asteroid pairs formed by rotational fission of a parent body can be derived from dynamical modeling, and …

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 27594 nodes and 526471 edges.
Tags: Biological, Protein interactions, Unweighted

This https://arxiv.org/abs/2402.14584 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Estimating angular momenta of fission fragments from isomeric yield ratios
Purpose: To deduce the angular momenta of fission fragments based on the observed isomeric yield ratios (IYR) in 25-MeV proton-induced fission of 238U and to compare these using Wilson's model. Method: A surrogate model of GEF has been developed to generate properties of primary fission fragments. Based on the excitation energy and angular momentum of fission fragments from GEF, an energy versus angular momentum matrix is reconstructed using a set of parameters. With such matrices as input, TAL…

Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL
A. Jaries, M. Stryjczyk, A. Kankainen, L. Al Ayoubi, O. Beliuskina, L. Canete, R. P. de Groote, C. Delafosse, P. Delahaye, T. Eronen, M. Flayol, Z. Ge, S. Geldhof, W. Gins, M. Hukkanen, P. Imgram, D. Kahl, J. Kostensalo, S. Kujanp\"a\"a, D. Kumar, I. D. Moore, M. Mougeot, D. A. Nesterenko, S. Nikas, D. Patel, H. Penttil\"a, D. Pitman-Weymouth, I. Pohjalainen, A. Raggio, M. Ramalho,…

Isomeric states of fission fragments explored via Penning trap mass spectrometry at IGISOL
The masses of $^{84}$Br, $^{105}$Mo, $^{115,119,121}$Pd, $^{122}$Ag, $^{127,129}$In, $^{132}$Sb and their respective isomeric states have been measured with the JYFLTRAP Penning trap mass spectrometer using the phase-imaging ion-cyclotron-resonance technique. The excitation energies of the isomeric states in $^{132}$Sb and $^{119}$Pd were experimentally determined for the first time, while for $^{84}$Br, $^{115}$Pd and $^{127,129}$In, the precision of the mass values was substantially improved.…

This https://arxiv.org/abs/2402.15224 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Distinguishing fission-like events from deep-inelastic collisions
We propose two functions to distinguish fission-like events from quasi-elastic (QE) scattering and deep inelastic collisions (DIC), for a better analysis of the measured mass-total kinetic energy distributions of binary fragments formed in fusion-fission reactions. We note that the ratio of capture to DIC events evidently decreases with the decreasing of the depth of the capture pocket predicted from the Skyrme energy density functional, with which the capture pocket could be extracted from the…

Revisiting Taylor and the Trinity Test
Elizabeth Mone (College of Sciences, Georgia Institute of Technology, Atlanta, Georgia), Pranay Seshadri (College of Engineering, Georgia Institute of Technology, Atlanta, Georgia)
https://arxiv.org/abs/2403.19657

Revisiting Taylor and the Trinity Test
The atomic bomb uses fission of heavy elements to produce a large amount of energy. It was designed and deployed during World War II by the United States military. The first test of an atomic bomb occurred in July of 1945 in New Mexico and was given the name Trinity; this test was not declassified until 1949. In that year Geoffrey Ingram Taylor released two papers, detailing his process in calculating the energy yield of the atomic bomb from pictures of the Trinity explosion alone. Many scienti…

This https://arxiv.org/abs/2308.08583 has been replaced.
initial toot: https://mastoxiv.page/@a…

First-principles determination of the phonon-point defect scattering and thermal transport due to fission products in ThO2
This work presents the first principles calculations of the lattice thermal conductivity degradation due to point defects in thorium dioxide using an alternative solution of the Pierels-Boltzmann transport equation. We have used the non-perturbative Green's function methodology to compute the phonon point defect scattering rates that consider the local distortion around the point defect, including the mass difference changes, interatomic force constants and structural relaxation near the point …

Spin-coupled molecular orbitals: chemical intuition meets quantum chemistry
Daniel Marti-Dafcik, Nicholas Lee, Hugh G. A. Burton, David P. Tew
https://arxiv.org/abs/2402.08858

Spin-coupled molecular orbitals: chemical intuition meets quantum chemistry
Molecular orbital theory is powerful both as a conceptual tool for understanding chemical bonding, and as a theoretical framework for ab initio quantum chemistry. Despite its undoubted success, MO theory has well documented shortcomings, most notably that it fails to correctly describe diradical states and homolytic bond fission. In this contribution, we introduce a generalised MO theory that includes spin-coupled radical states. We show through archetypical examples that when bonds break, the …

Hot electrons and singlet-fission dark excitons modulate strong-coupling conditions in metal-organic optical microcavities
Pavel V. Kolesnichenko, Manuel Hertzog, Felix Hainer, Oskar Kefer, Jana Zaumseil, Tiago Buckup
https://arXiv.org/abs/2401.14835

Hot electrons and singlet-fission dark excitons modulate strong-coupling conditions in metal-organic optical microcavities
Polaritons, formed as a result of strong mixing between light and matter, are promising for numerous applications including organic solar cells, optical logic gates, and qubits. In low-Q organic optical microcavities, polaritonic signatures due to strong hybridization between photons and Frenkel excitons were found to decay together with the dynamics of dark excitons. A conundrum, however, remained whether dark excitons modulate exciton-photon coupling strength. It also remained unclear how dar…

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 23826 nodes and 285752 edges.
Tags: Biological, Protein interactions, Unweighted
…

Percolation threshold and critical point of a nuclear reactor
V. V. Ryazanov
https://arxiv.org/abs/2402.18979 https://arxiv.org/pdf/2…

Percolation threshold and critical point of a nuclear reactor
Neutrons in a nuclear reactor move along trajectories corresponding to Cayley trees associated with branching random processes. The probability of percolation, the appearance of such a state of the Bethe lattice in which there is at least one continuous path through neighboring conducting nodes through the entire lattice, corresponds to the probability of the occurrence of a self-sustaining fission chain reaction. At a critical value of the last probability, a (conditionally) infinite cluster o…

Shell Effects in Quasi-fission in Reactions Forming 226Th Compound Nucleus
Hyeonseop Lee, Patrick McGlynn, Cedric Simenel
https://arxiv.org/abs/2403.02541 …

Shell Effects in Quasi-fission in Reactions Forming 226Th Compound Nucleus
Quasi-fission (QF) reactions occur in fully damped heavy-ion collisions without the formation of an equilibrated compound nucleus, leading to the formation of fragments with similar properties as in fission reactions. Similar shell effects are expected to affect fragment formation in both fission and QF. Our purpose is to investigate QF dynamics in different reactions forming the same compound nucleus and search for possible signatures of shell effects in fragment formation. 50Ca+176Yb and 96Zr…

mist: MIST protein interaction database (2020)
The Molecular Interaction Search Tool (MIST) is a comprehensive resource of molecular interactions, assembled from severla primary sources. MIST currently supports several species, including:.
This network has 27105 nodes and 334495 edges.
Tags: Biological, Protein interactions, Unweighted
<…

This https://arxiv.org/abs/2311.06177 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Quantum Fluctuations Driving the Generation and Strong Correlations of Fission Fragment Angular Momenta
Two critical issues in the study of the fission mechanism are how the fission fragment angular momenta (FFAM) develop dynamically from equilibrium and how they are correlated with each other. To this end, we construct a time-dependent generator coordinate method that incorporates crucial quantum fluctuations -- multiple rotations, vibrations, and their couplings -- based on covariant density functional theory, providing for the first time a global, microscopic, and dynamical study on the FFAM d…

Non-equilibrium Green's function approach to low-energy fission dynamics
K. Uzawa, K. Hagino, G. F. Bertsch
https://arxiv.org/abs/2403.04255 https://…

Non-equilibrium Green's function approach to low-energy fission dynamics
The concept of a compound nucleus was proposed by Bohr in 1936 to explain narrow resonances in neutron scattering off a nucleus. While a compound nucleus has been understood in terms of statistical mechanics, its description based on a many-body Hamiltonian has yet to be developed. Here we present a microscopic modeling of a compound nucleus starting from a nucleonic degree of freedom. We focus in particular on a decay of a heavy compound nucleus, that is, fission and radiative capture. To this…

Non-equilibrium Green's function approach to low-energy fission dynamics
K. Uzawa, K. Hagino, G. F. Bertsch
https://arxiv.org/abs/2403.04255 https://…

Non-equilibrium Green's function approach to low-energy fission dynamics
The concept of a compound nucleus was proposed by Bohr in 1936 to explain narrow resonances in neutron scattering off a nucleus. While a compound nucleus has been understood in terms of statistical mechanics, its description based on a many-body Hamiltonian has yet to be developed. Here we present a microscopic modeling of a compound nucleus starting from a nucleonic degree of freedom. We focus in particular on a decay of a heavy compound nucleus, that is, fission and radiative capture. To this…

Inner fission barriers of uranium isotopes in the deformed relativistic Hartree-Bogoliubov theory in continuum
Wei Zhang, Jin-Ke Huang, Ting-Ting Sun, Jing Peng, Shuang Quan Zhang
https://arxiv.org/abs/2403.19092

Inner fission barriers of uranium isotopes in the deformed relativistic Hartree-Bogoliubov theory in continuum
The inner fission barriers of the even-even uranium isotopes from the proton to the neutron drip line are studied with the deformed relativistic Hartree-Bogoliubov theory in continuum. A periodic evolution for the ground state shapes is shown with the neutron number, i.e., spherical shapes at shell closures $N=$126, 184, 258, and prolate dominated shapes between them. In analogy to the shape evolution, the inner fission barriers also exhibit a periodic behavior: peaks at the shell closures and …

This https://arxiv.org/abs/2403.04255 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Non-equilibrium Green's function approach to low-energy fission dynamics
The concept of a compound nucleus was proposed by Bohr in 1936 to explain narrow resonances in neutron scattering off a nucleus. While a compound nucleus has been understood in terms of statistical mechanics, its description based on a many-body Hamiltonian has yet to be developed. Here we present a microscopic modeling of a compound nucleus starting from a nucleonic degree of freedom. We focus in particular on a decay of a heavy compound nucleus, that is, fission and radiative capture. To this…