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Die #Geothermie-Bohrung in #Krefeld zeigt, dass die #Kalksteinschicht unter der Stadt größer und wasserführender ist als gedacht.
Damit wird die Region für

High-precision Penning trap mass measurements of neutron-rich chlorine isotopes at the N=28 shell closure
H. Erington, G. Bollen, G. Dykstra, A. Hamaker, C. M. Ireland, C. R. Nicoloff, D. Puentes, R. Ringle, S. Schwarz, C. S. Sumithrarachchi, A. A. Valverde, I. T. Yandow
https://arxiv.org/abs/2505.18354

High-precision Penning trap mass measurements of neutron-rich chlorine isotopes at the N=28 shell closure
Although it is known that the $N=28$ spherical shell closure erodes, the strength of the closure with decreasing proton number $Z<20$ is an open question in nuclear structure. In this region of interest, direct high-precision mass measurements of neutron-rich $^{43-45}$Cl isotopes were performed at the Low Energy Beam and Ion Trap (LEBIT) when coupled to the National Superconducting Cyclotron Lab. The resulting mass excesses (MEs) are ME($^{43}$Cl) = -24114.4(1.7) keV, ME($^{44}$Cl) = -20450.8(…