Α Decay of I109 and Its Implications for the Proton Decay of Sb105 and the Astrophysical Rapid Proton-Capture Process
Document Type
Article
Publication Date
5-23-2007
Description
An α-decay branch of (1.4±0.4)×10-4 has been discovered in the decay of I109, which predominantly decays via proton emission. The measured Qα value of 3918±21keV allows the indirect determination of the Q value for proton emission from Sb105 of 356±22keV, 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 Sn105(p,γ)Sb106(p,γ)Te107(α decay)Sn103 cycle at the densities expected in explosive hydrogen burning scenarios, unless unusually strong pairing effects result in a Sn103(p,γ)Sb104(p,γ) Te105(α decay)Sn101) cycle.
Citation Information
Mazzocchi, C.; Grzywacz, R.; Liddick, S. N.; Rykaczewski, K. P.; Schatz, H.; Batchelder, J. C.; Bingham, C. R.; Gross, C. J.; Hamilton, J. H.; Hwang, J. K.; Ilyushkin, S.; Korgul, A.; Królas, W.; Li, K.; Page, R. D.; Simpson, D.; and Winger, J. A.. 2007. Α Decay of I109 and Its Implications for the Proton Decay of Sb105 and the Astrophysical Rapid Proton-Capture Process. Physical Review Letters. Vol.98(21). https://doi.org/10.1103/PhysRevLett.98.212501 ISSN: 0031-9007