Invariant-mass spectroscopy of $^{18}$Ne, $^{16}$O, and $^{10}$C excited states formed in neutron transfer reactions
Autor: | Charity, R. J., Brown, K. W., Elson, J. M., Reviol, W., Sobotka, L. G., Buhro, W. W., Chajecki, Z., Lynch, W. G., Manfredi, J., Shane, R., Showalter, R. H., Tsang, M. B., Weisshaar, D., Winkelbauer, J., Bedoor, S., McNeel, D. G., Wuosmaa, A. H. |
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Rok vydání: | 2018 |
Předmět: | |
Zdroj: | Phys. Rev. C 99, 044304 (2019) |
Druh dokumentu: | Working Paper |
DOI: | 10.1103/PhysRevC.99.044304 |
Popis: | Neutron transfer reactions with fast secondary beams of $^{17}$Ne, $^{15}$O, and $^9$C have been studied with the HiRA and CAESAR arrays. Excited states of $^{18}$Ne, $^{16}$O, and $^{10}$C in the continuum have been identified using invariant-mass spectroscopy. The best experimental resolution of these states is achieved by selecting events where the decay fragments are emitted transverse to the beam direction. We have confirmed a number of spin assignments made in previous works for the negative-parity states of $^{18}$Ne. In addition we have found new higher-lying excited states in $^{16}$O and $^{18}$Ne, some of which fission into two ground-state $^8$Be fragments. Finally for $^{10}$C, a new excited state was observed. These transfer reactions were found to leave the remnant of the $^9$Be target nuclei at very high excitation energies and maybe associated with the pickup of a deeply-bound $^9$Be neutron. Comment: 21 pages, 18 figures |
Databáze: | arXiv |
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