Discovery of the Eu-151 alpha decay

作者：Casali N^*; Nagorny S S; Orio F; Pattavina L; Beeman J W; Bellini F; Cardani L; Dafinei I; Di Domizio S; Di Vacri M L; Gironi L; Kosmyna M B; Nazarenko B P; Nisi S; Pessina G; Piperno G; Pirro S; Rusconi C; Shekhovtsov A N; Tomei C; Vignati M

来源：Journal of Physics G: Nuclear and Particle Physics , 2014, 41(7): 075101.

DOI：10.1088/0954-3899/41/7/075101

• alpha decay
• scintillation detectors
• bolometers

We report on the first compelling observation of a decay of Eu-151 to the ground state of Pm-147. The measurement was performed using a 6.15 g Li6Eu(BO3)(3) crystal operated as a scintillating bolometer. The Q-value and half-life measured are: Q = 1948.9 +/- 6.9(stat.) +/- 5.1(syst.) keV, and T-1/2 = (4.62 +/- 0.95(stat.) +/- 0.68(syst.)) x 10(18) y. The half-life prediction of nuclear theory using the Coulomb and proximity potentialmodel are in good agreement with this experimental result.

• 出版日期2014-7