Wada, R. (2025) Experimental search for high-spin resonant states in collisions of 28Si+12C at 35 MeV/nucleon, using FAUST array. Il nuovo cimento C, 48 (2). pp. 1-11. ISSN 1826-9885
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Abstract
A search for high-spin resonant states in highly excited 28Si is performed, using an inverse reaction of 28Si+12C at 35MeV/nucleon. Twelve possible candidate peaks in different seven-α decay channels, particularly those involving 8Be(gs and 2+) emission are suggested as such resonances in the sub μb range of cross-section. Utilizing a shape analysis method, a χ2 fit is performed comparing the experimental events in each resonant peak to those of simulated events with particular shapes and angular momenta. The shapes and angular momenta of the simulated event set at the χ2 minimum are taken as those of the candidate peaks. For nine of the candidate peaks their optimum shapes and angular momenta are suggested. The trend of the evaluated excitation energy vs. angular momentum agrees well with that of the theoretical toroidal high-spin states predicted by Ren et al., Nucl. Phys. A, 996 (2020) 121696, but the minimum χ2 fits to the experimental data suggest tube shapes not toroids as the optimal disassembling shapes.
| Item Type: | Article |
|---|---|
| Subjects: | 500 Scienze naturali e Matematica > 530 Fisica |
| Depositing User: | Marina Spanti |
| Date Deposited: | 31 Mar 2025 13:47 |
| Last Modified: | 31 Mar 2025 13:47 |
| URI: | http://eprints.bice.rm.cnr.it/id/eprint/23539 |
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