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Quenching of Single-Particle Strength in A=15 Nuclei by Kay, B. P.; Tang, T. L.; Tolstukhin, I. A.; Roderick, G. B.; Mitchell, A. J.; Ayyad, Y.; Bennett, S. A.; Chen, J.; Chipps, K. A.; Crawford, H. L.; Freeman, S. J.; Garrett, K.; Gott, M. D.; Hall, M. R.; Hoffman, C. R.; Jayatissa, H.; Macchiavelli, A. O.; MacGregor, P. T.; Sharp, D. K.; Wilson, G. L. is a scholarly article available to read on EtoBox.

What is Quenching of Single-Particle Strength in A=15 Nuclei about?

Absolute cross sections for the addition of $s$- and $d$-wave neutrons to $^{14}$C and $^{14}$N have been determined simultaneously via the ($d$,$p$) reaction at 10 MeV/u. The difference between the neutron and proton separation energies, $\Delta S$, is around $-20$ MeV for the $^{14}$C$+$$n$ system and $+8$ MeV for $^{14}$N$+$$n$. The population of the $1s_{1/2}$ and $0d_{5/2}$ orbitals for both systems is reduced by a factor of approximately 0.5 compared to the independent single-particle model, or about 0.6 when compared to the shell model. This finding strongly contrasts with results deduced from intermediate-energy knockout reactions between similar nuclei on targets of $^{9}$Be and $^{12}$C. The simultaneous technique used removes many systematic uncertainties.

Author

Kay, B. P.; Tang, T. L.; Tolstukhin, I. A.; Roderick, G. B.; Mitchell, A. J.; Ayyad, Y.; Bennett, S. A.; Chen, J.; Chipps, K. A.; Crawford, H. L.; Freeman, S. J.; Garrett, K.; Gott, M. D.; Hall, M. R.; Hoffman, C. R.; Jayatissa, H.; Macchiavelli, A. O.; MacGregor, P. T.; Sharp, D. K.; Wilson, G. L.

Published

2022

Language

EN