Intruder structures in $^{32}$Si and $^{29}$Al
Nuclear Experiment
2025-06-30 v1
Abstract
We have studied Si and Al using C(Ne,2p) and C(Ne,p) fusion-evaporation reactions. In both cases, we observed significant population of high-spin structures distinct from the ground-state yrast bands. In Si, most of the high-energy states feed into a nanosecond isomer. In Al, we identified a rotor-like negative-parity band with a band-head. Doppler shift lifetime measurements were performed for all observed states. These results were compared to shell model calculations and interpreted in terms of proton and neutron cross-shell excitation.
Keywords
Cite
@article{arxiv.2506.22357,
title = {Intruder structures in $^{32}$Si and $^{29}$Al},
author = {J. Williams and G. Hackman and K. Starosta and R. S. Lubna and Priyanka Choudhary and Subhrajit Sahoo and P. C. Srivastava and C. Andreoiu and D. Annen and H. Asch and M. D. H. K. G. Badanage and G. C. Ball and M. Beuschlein and H. Bidaman and V. Bildstein and R. J. Coleman and A. B. Garnsworthy and B. Greaves and G. Leckenby and V. Karayonchev and M. S. Martin and C. Natzke and C. M. Petrache and A. Radich and E. Raleigh-Smith and D. Rhodes and R. Russell and M. Satrazani and P. Spagnoletti and C. E. Svensson and D. Tam and F. Wu and D. Yates and Z. Yu},
journal= {arXiv preprint arXiv:2506.22357},
year = {2025}
}
Comments
Accepted, Physical Review C