Direct observation of the Ba-114 -> Xe-110 -> Te-106 -> Sn-102 triple alpha-decay chain using position and time correlations


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Capponi L., Smith J. F. , Ruotsalainen P., Scholey C., Rahkila P., Auranen K., ...Daha Fazla

PHYSICAL REVIEW C, cilt.94, 2016 (SCI İndekslerine Giren Dergi) identifier identifier

Özet

The triple alpha-decay chain Ba-114 -> Xe-110 -> Te-106 -> Sn-102 has been directly observed for the first time, following the Ni-58(Ni-58, 2n) reaction. Implantation of Ba-114 nuclei into a double-sided silicon-strip detector has allowed their alpha decays to be correlated in position and time with the a decays of the daughter (Xe-110) and granddaughter (Te-106) nuclei. In total, 17 events have been assigned to the Ba-114 -> Xe-110 -> Te-106 -> Sn-102 triple alpha-decay chain. The energy of the Ba-114 alpha decay has been measured to be E-alpha = 3480(20) keV, which is 70 keV higher than the previously measured value, and the half-life of Ba-114 has been measured with improved accuracy, to be 380(-110)(+190) ms. A revised Q(12C) value of 19 035(45) keV for Ba-114 is presented.