Author/Authors :
A.S. Barabash، نويسنده , , F.T. Avignone III، نويسنده , , J.I. Collar، نويسنده , , C.K. Guerard، نويسنده , , R.J. Arthur، نويسنده , , R.L. Brodzinski، نويسنده , , H.S. Miley، نويسنده , , J.H. Reeves، نويسنده , , J.R. Meier، نويسنده , , K. Ruddick، نويسنده , , V.I. Umatov، نويسنده ,
Abstract :
Double-beta decay of 100Mo to the 0+ excited sate at 1130.29 keV in 100ru has been observed. A 956g sample of molybdenum powder enriched to 98.468% 100Mo was counted in a “Marinelli” geometry with a well-shielded, ultralow-background germnium detector. The cascade gamma rays at 539.53 and 590.76 keV in 100Ru were observed. The resulting half-life is (6.1−1.1+1.8)×1020 yr at the 68% confidence limit in disagreement with a recently published limit.
