@arXiv_physicsinsdet_bot@mastoxiv.page2026-08-21 07:56:48
Radiotracer photoluminescence for element-specific identification of color centers
Brecht Biesmans, Afonso Lamelas, Kirill Danilov, Aleksandr Seliverstov, \^Angelo Costa, V\'itor Amaral, Andr\'e Vantomme, Jo\~ao Guilherme Correia, Ulrich Wahl, Lino M. C. Pereira, the ISOLDE Collaboration
https://arxiv.org/abs/2608.19219 https://arxiv.org/pdf/2608.19219 https://arxiv.org/html/2608.19219
arXiv:2608.19219v1 Announce Type: new
Abstract: We report on the implementation of a radiotracer photoluminescence spectroscopy setup at the ISOLDE radioactive ion beam facility at CERN, enabling element-specific identification of optically active defects in solids. The method combines radioactive ion implantation with optical spectroscopy, allowing the temporal evolution of photoluminescence signals to be correlated directly with nuclear decay. The setup is currently optimized for color centers in diamond and related wide-bandgap materials and enables room-temperature measurements. The system consists of an optical microscope coupled to a fiber-fed Czerny-Turner spectrometer with a liquid-nitrogen-cooled CCD detector, providing the stability required for long-duration measurements. As a proof-of-principle, radioactive $^{75}$Ga was implanted into diamond as a precursor to produce $^{75}$Ge impurities. The photoluminescence band extending from 600 nm, corresponding to the well-known GeV$^{-}$ center, exhibits an exponential decay with a half-life of $82.3^{ 2.5}_{-2.3} \mathrm{min}$, in agreement with the known $\beta^{-}$ decay half-life of $^{75}$Ge of $82.78(4) \mathrm{min}$. This establishes a direct and unambiguous correlation between the observed spectral feature and its germanium origin. These results demonstrate the capability of the setup to perform element-specific optical spectroscopy and extend radiotracer methods to color centers in wide-bandgap materials, taking advantage of the uniquely broad range of radioactive isotopes available at ISOLDE.
toXiv_bot_toot
@seeingwithsound@mas.to2026-09-09 12:23:15
Nanoscope Therapeutics announces another step towards FDA approval of their gene-agnostic MOGENRY optogenetic gene therapy for RP https://nanosther…
@arXiv_physicsinsdet_bot@mastoxiv.page2026-08-21 07:58:14
Serenity-S1, a CMS Tracker Readout and Data Processing Card for HL-LHC
G. Fedi, L. E. Ardila-Perez, M. Balzer, M. Fuchs, M. Holmberg, A. Howard, G. M. Iles, H. A. Krause, T. Mehner, D. Parker, M. Pesaresi, A. Rose, K. Whalen, T. Williams, J. Zhao, for the CMS Collaboration
https://arxiv.org/abs/2608.19226 https://arxiv.org/pdf/2608.19226 https://arxiv.org/html/2608.19226
arXiv:2608.19226v1 Announce Type: new
Abstract: The CERN Large Hadron Collider will be upgraded to the High-Luminosity LHC, increasing the particle-collision rate and the demands on detector readout. A key element of this upgrade is the new CMS Tracker, whose silicon sensors will generate data at an aggregate rate of about 10 TB/s. This data must be routed efficiently to processing systems and filtered before storage. Serenity-S1 is an ATCA readout and data-processing card based on an AMD Virtex UltraScale VU13P FPGA with 128 high-speed serial transceivers. Twenty 12-channel Samtec FireFly optical modules provide up to 120 transmit and 120 receive channels at line rates of up to 25 Gb/s, while an additional optical module supports CMS Tracker links at up to 10 Gb/s per channel. The modular optical layout, combined with the large FPGA, makes Serenity-S1 suitable for several applications within and beyond CMS. ATCA provides the power and cooling required for operation in the CMS service cavern. Low-level management and the IPMI interface are provided by an OpenIPMC mezzanine, while an AMD Kria K26 system-on-module running AlmaLinux 9 performs higher-level board management and application control. Firmware and software frameworks provide common infrastructure so that users can focus on application-specific logic. The paper describes the hardware, firmware and software architecture of Serenity-S1 and its deployment in CMS Tracker integration and R&D activities.
toXiv_bot_toot
@presseportal_pol_NDS@frawas.de2026-08-18 15:31:23
POL-OS: Quakenbrück: 61-Jähriger nach Wohnungsbrand tot aufgefunden - Obduktion angeordnet Osnabrück (ots) - Am Montagnachmittag, gegen 14.30 Uhr, meldete ein Bewohner eines Mehrfamilienhauses in der Straße An der Mühle Brandgeruch und Rauch im Hausflur. Einsatzkräfte stellten wenig später in einer Wohnung im ersten Obergeschoss eine ... https://www…
@StephenRees@mas.to2026-08-18 22:21:27
Are you a passionate person looking for an opportunity to work with people dedicated to equality, liberty, and justice? Do you have experience in campaigning, communications, or event planning? Or do you know someone who does?
BCCLA is hiring a Campaigns Manager and a Communications, Outreach & Events Coordinator!
The Campaigns Manager will design, develop, run and manage impactful and engaging awareness, public opinion change, advocacy, and legal campaigns. This includes wo…
@Techmeme@techhub.social2026-06-28 05:25:50
Apple's appeal to a London Court of Appeal ruling begins Monday at the UK Supreme Court; the ruling required it to pay $500M for using Optis' wireless patents (Alistair Gray/Financial Times)
https://www.ft.com/content/d6a0103a-7fca-4e66-b92f-45f6ff3de059
@arXiv_astrophGA_bot@mastoxiv.page2026-07-22 08:02:08
The Next Generation Virgo Cluster Survey (NGVS). II. A Catalog of Galaxies in the Virgo Cluster
Laura Ferrarese, Patrick Cote, Lauren A. MacArthur, Joel C. Roediger, John P. Blakeslee, Michele Cantiello, Jean-Charles Cuillandre, Puragra Guhathakurta, Stephen Gwyn, Max M. Kurzner, Eric W. Peng, Matthew Santos, Eleanore B. Todd, Elisa Toloba, Pierre-Alain Duc, Patrick R. Durrell, Nicholas Fantin, Yuting Feng, Ariane Lancon, Sungsoon Lim, Chengze Liu, Deborah Lokhorst, Alessia Longobardi, Simona Mei, J. Christopher Mihos, Sanjaya Paudel, Thomas H. Puzia, Anand Raichoor, Ruben Sanchez-Janssen, Kaixiang Wang, Hongxin Zhang, Alessandro Boselli, Michael L. Balogh, Samuel Boissier, Eric Emsellem, J. J. Kavelaars, Alan W. McConnachie, Cameron R. Morgan, Chelsea Spengler, James E. Taylor, Matthew A. Taylor, Toby Brown, Sebastien Fabbro, Raphael Gavazzi, Hendrik Hildebrandt, Rashi Jain, Andres Jordan, Rory Smith, Solveig Thompson, Haruka Yoshino, Wim van Driel, Ludovic van Waerbeke, Tyrone E. Woods, Jade Yeung
https://arxiv.org/abs/2607.18414 https://arxiv.org/pdf/2607.18414 https://arxiv.org/html/2607.18414
arXiv:2607.18414v1 Announce Type: new
Abstract: The Next Generation Virgo Cluster Survey (NGVS) is a deep, high resolution imaging campaign that used the 1 deg$^2$ MegaCam instrument on the Canada-France-Hawaii Telescope to carry out a comprehensive optical survey of the Virgo cluster, from its core to its virial radius. The NGVS covers a contiguous area of 104 deg$^2$ (8.63 Mpc$^2$ at the 16.5 Mpc distance of Virgo) in the $u^*$-,$g$-,$i$-, and $z$-band, with additional limited coverage in $r$. In this paper, we present the final catalog of Virgo galaxies across the entire NGVS area. The catalog includes 3680 galaxies considered to be $bona~fide$ members of the cluster, spanning a factor of 2.5 million in luminosity, from $g = 8.42$ mag to $g = 24.41$ mag ($M_g = -22.67$ mag to $M_g = -6.68$ mag). With 2100 previously uncataloged galaxies, the NGVS catalog augments the number of known Virgo members by a factor 2.3. The catalog is complete down to $g = 18.6$ mag ($M_g=-12.5$ mag, corresponding to a stellar mass $M_* \sim 1.6\times10^7~M_{\odot}$ for an old stellar population) and 50% complete at $g = 22.0$ mag ($M_g=-9.1$ mag, $M_* \sim 6.2\times10^5~M_{\odot}$), three magnitudes deeper than the venerable Virgo Cluster Catalog (VCC), which for over 40 years has served as the reference standard for Virgo. Photometric and structural parameters are derived for all NGVS galaxies and presented in a series of tables, alongside nuclear and morphological classification, as well as stellar masses and, when available, radial velocities.
toXiv_bot_toot
@radioeinsmusicbot@mastodonapp.uk2026-07-12 07:49:58
🇺🇦 Auf radioeins läuft...
Die Fantastischen Vier feat. Clueso:
🎵 Zusammen
#NowPlaying #DieFantastischenVier #Clueso
https://open.spotify.com/track/2qlTyN8Ou086f0HTtZtGoA
@tanyakaroli@expressional.social2026-08-27 16:32:19
De sidste par dage har jeg opdaget en ny sommerfugl som jeg ikke har set i vores have fŸr. For lidt siden sad der seks af dem på vores hvidmalede terrassevæg 🥰
Det viser sig at være admiraler. Hvor er jeg glad for at de finder sig til rette i vores have!
@awinkler@openbiblio.social2026-06-26 14:53:58
