TY - JOUR
T1 - Nuclear mass measurements map the structure of atomic nuclei and accreting neutron stars
AU - Meisel, Z.
AU - Estrade Vaz, Alfredo
AU - Wimmer, Kathrin
N1 - Funding Information:
This work was funded by the US Department of Energy Office of Science through Grants No. DE-FG02-88ER40387, No. DE-SC0019042, No. DE-SC0020451, and No. DE-SC0020406; the US National Science Foundation through Grants No. PHY-0822648, No. PHY-1102511, No. PHY-1811855, No. PHY-1913554, and No. PHY-1430152 (Joint Institute for Nuclear Astrophysics – Center for the Evolution of the Elements); and the DFG under Contracts No. GE2183/1-1 and No. GE2183/2-1.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020
Y1 - 2020
N2 - We present mass excesses (ME) of neutron-rich isotopes of Ar through Fe, obtained via time of flight Bρ mass spectrometry at the National Superconducting Cyclotron Laboratory. Our new results have significantly reduced systematic uncertainties relative to a prior analysis, enabling the first determination of ME for Ti58,59,V62,Cr65,Mn67,68, and Fe69,70. Our results show the N=34 subshell weaken at Sc and vanish at Ti, along with the absence of an N=40 subshell at Mn. This leads to a cooler accreted neutron star crust, highlighting the connection between the structure of nuclei and neutron stars.
AB - We present mass excesses (ME) of neutron-rich isotopes of Ar through Fe, obtained via time of flight Bρ mass spectrometry at the National Superconducting Cyclotron Laboratory. Our new results have significantly reduced systematic uncertainties relative to a prior analysis, enabling the first determination of ME for Ti58,59,V62,Cr65,Mn67,68, and Fe69,70. Our results show the N=34 subshell weaken at Sc and vanish at Ti, along with the absence of an N=40 subshell at Mn. This leads to a cooler accreted neutron star crust, highlighting the connection between the structure of nuclei and neutron stars.
M3 - Article
VL - 101
JO - PHYSICAL REVIEW C
JF - PHYSICAL REVIEW C
SN - 0556-2813
IS - 5
ER -