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$\beta$-decay of $^{61}$V and its Role in Cooling Accreted Neutron Star Crusts by Ong, W. -J.; Brown, E. F.; Browne, J.; Ahn, S.; Childers, K.; Crider, B. P.; Dombos, A. C.; Gupta, S. S.; Hitt, G. W.; Langer, C.; Lewis, R.; Liddick, S. N.; Lyons, S.; Meisel, Z.; Möller, P.; Montes, F.; Naqvi, F.; Pereira, J.; Prokop, C.; Richman, D.; Schatz, H.; Schmidt, K.; Spyrou, A. is a scholarly article available to read on EtoBox.

What is $\beta$-decay of $^{61}$V and its Role in Cooling Accreted Neutron Star Crusts about?

The interpretation of observations of cooling neutron star crusts in quasi-persistent X-ray transients is affected by predictions of the strength of neutrino cooling via crust Urca processes. The strength of crust Urca neutrino cooling depends sensitively on the electron-capture and $\beta$-decay ground-state to ground-state transition strengths of neutron-rich rare isotopes. Nuclei with mass number $A=61$ are predicted to be among the most abundant in accreted crusts, and the last remaining experimentally undetermined ground-state to ground-state transition strength was the $\beta$-decay of $^{61}$V. This work reports the first experimental determination of this transition strength, a ground-state branching of 8.1$^{+2.2}_{-2.0} \%$, corresponding to a log $ft$ value of 5.5$^{+0.2}_{-0.2}$. This result was achieved through the measurement of the $\beta$-delayed $\gamma$ rays using the total absorption spectrometer SuN and the measurement of the $\beta$-delayed neutron branch using the neutron long counter system NERO at the National Superconducting Cyclotron Laboratory at Michigan State University. This method helps to mitigate the impact of the Pandemonium effect in extremely neu

Author
Ong, W. -J.; Brown, E. F.; Browne, J.; Ahn, S.; Childers, K.; Crider, B. P.; Dombos, A. C.; Gupta, S. S.; Hitt, G. W.; Langer, C.; Lewis, R.; Liddick, S. N.; Lyons, S.; Meisel, Z.; Möller, P.; Montes, F.; Naqvi, F.; Pereira, J.; Prokop, C.; Richman, D.; Schatz, H.; Schmidt, K.; Spyrou, A.
Published
2021
Language
EN

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