Search for α decay of natural Europium

doi:10.1016/j.nuclphysa.2007.03.001

Search for αあるふぁ decay of natural Europium

The indication for the αあるふぁ decay of ¹⁵¹Eu ( Q=1.964 MeV) with the half-life T1/2αあるふぁ=5-3+11×10 yr has been observed for the first time with the help of a low background CaF ₂(Eu) crystal scintillator (mass of 370 g) in measurement at the Gran Sasso National Laboratories of the INFN during 7426 h. In a conservative approach the lower limit on the half-life of ¹⁵¹Eu has been established as T1/2αあるふぁ⩾1.7×10 yr at 68% C.L.

Publication:

Nuclear Physics A

Pub Date:

June 2007

DOI:

10.1016/j.nuclphysa.2007.03.001

Bibcode:

2007NuPhA.789...15B

Keywords:

23.60.+e;
29.40.Mc;
Alpha decay;
Scintillation detectors

NASA/ADS

Search for αあるふぁ decay of natural Europium

Abstract