Observation of the exotic nucleus145Tmvia its direct proton decay

Autor:	K. P. Rykaczewski, Chang-Hong Yu, J. C. Batchelder, C. Baktash, Dan Shapira, J. W. McConnell, Carl J Gross, J. McKenzie, E. F. Zganjar, Thomas Davinson, K. S. Toth, C. R. Bingham, X. J. Xu, S. D. Paul, W.T. Milner, William B. Walters, J. Mas, Philip Woods, T. N. Ginter, J. H. Hamilton, John P. Greene
Rok vydání:	1998
Předmět:	Physics Nuclear and High Energy Physics Proton Ion beam Physics::Instrumentation and Detectors Proton decay chemistry.chemical_element Thulium Recoil chemistry Physics::Accelerator Physics Neutron Atomic physics Proton emission Nuclear Experiment Energy (signal processing)
Zdroj:	Physical Review C. 57:R1042-R1046
ISSN:	1089-490X 0556-2813
Popis:	Proton emission from ${}^{145}\mathrm{Tm}$ was observed for the first time via the ${}^{92}\mathrm{Mo}{(}^{58}\mathrm{Ni},p4n)$ reaction, using the Holifield Radioactive Ion Beam Facility Recoil Mass Spectrometer in conjunction with a double-sided Si strip detector at the focal plane. The measured energy of the emitted proton is 1.728(10) MeV and its half-life is 3.5(10) \ensuremath{\mu}s, the shortest ever observed for ground-state proton radioactivity. When compared to the calculated WKB half-life for an $l=5$ transfer, the spectroscopic factor is 0.51(16), which is consistent with the value of 0.64 calculated via the BCS approximation for a spherical nucleus. Also, the half-life of ${}^{113}\mathrm{Cs}$ was determined with a greater precision than previously available to be 16.7(7) \ensuremath{\mu}sec.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::9add5d61c00f773787f817620c6b04a1 https://doi.org/10.1103/physrevc.57.r1042 Zobrazit plný text záznamu