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Alpha decay of 109I and its implications for the proton decay of 105Sb and the astrophysical rapid proton-capture process | | C Mazzocchi
; R Grzywacz
; S N Liddick
; K P Rykaczewski
; H Schatz
; J C Batchelder
; C R Bingham
; C J Gross
; J H Hamilton
; J K Hwang
; S Ilyushkin
; A Korgul
; W Królas
; K Li
; R D Page
; D Simpson
; J A Winger
; | | Date: |
25 May 2007 | | Journal: | Phys Rev Lett, 98 (21), 212501 | | Abstract: | An alpha-decay branch of (1.4+/-0.4) x 10(-4) has been discovered in the decay of 109I, which predominantly decays via proton emission. The measured Q(alpha) value of 3918+/-21 keV allows the indirect determination of the Q value for proton emission from 105Sb of 356+/-22 keV, which is approximately of 130 keV more bound than previously reported. This result is relevant for the astrophysical rapid proton-capture process, which would terminate in the 105Sn(p,gamma)106Sb(p,gamma)107Te(alpha decay)103Sn cycle at the densities expected in explosive hydrogen burning scenarios, unless unusually strong pairing effects result in a 103Sn(p,gamma)104Sb(p,gamma)105Te(alpha decay)101Sn) cycle. | | Source: | PubMed, pmid17677769 | | Services: | Forum | Review | Favorites | |
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