The decay by proton emission of the La-117 nucleus has been studied via the 310 MeV Ni-58 + Zn-64 reaction. The nucleus has two levels that decay to the ground state of Ba-116 with E-p = 783(6) keV (T-1/2 = 22(5) ms] and E-p = 933(10) keV [T-1/2 = 10(5) ms]. Calculations performed for a deformed proton emitter reproduce quite well the experimental results confirming that La-117 is strongly deformed (beta (2) similar to 0.31. Spin and parity of the two p-decaying levels have been determined as well: 3/2(+) for the ground state and 9/2(+) for the E-x = 151(12) keV excited state.
New Strongly Deformed Proton Emitter: 117La
SORAMEL, FRANCESCA;MAGLIONE, ENRICO;SCARLASSARA, FERNANDO;SIGNORINI, COSIMO;
2001
Abstract
The decay by proton emission of the La-117 nucleus has been studied via the 310 MeV Ni-58 + Zn-64 reaction. The nucleus has two levels that decay to the ground state of Ba-116 with E-p = 783(6) keV (T-1/2 = 22(5) ms] and E-p = 933(10) keV [T-1/2 = 10(5) ms]. Calculations performed for a deformed proton emitter reproduce quite well the experimental results confirming that La-117 is strongly deformed (beta (2) similar to 0.31. Spin and parity of the two p-decaying levels have been determined as well: 3/2(+) for the ground state and 9/2(+) for the E-x = 151(12) keV excited state.File in questo prodotto:
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