Detection of the natural α decay of tungsten -: art. no. 064606

被引:96
作者
Cozzini, C [1 ]
Angloher, G
Bucci, C
von Feilitzsch, F
Hauff, D
Henry, S
Jagemann, T
Jochum, J
Kraus, H
Majorovits, B
Mikhailik, V
Ninkovic, J
Petricca, F
Potzel, W
Pröbst, F
Ramachers, Y
Rau, W
Razeti, M
Seidel, W
Stark, M
Stodolsky, L
Tolhurst, AJB
Westphal, W
Wulandari, H
机构
[1] Univ Oxford, Dept Phys, Oxford OX1 3RH, England
[2] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany
[3] Lab Nazl Gran Sasso, I-67010 Assergi, Italy
[4] Tech Univ Munich, Phys Dept E15, D-85748 Garching, Germany
[5] Univ Tubingen, D-72076 Tubingen, Germany
来源
PHYSICAL REVIEW C | 2004年 / 70卷 / 06期
关键词
D O I
10.1103/PhysRevC.70.064606
中图分类号
O57 [原子核物理学、高能物理学];
学科分类号
070202 ;
摘要
The natural alpha-decay of W-180 has been unambiguously detected for the first time. The alpha peak is found in a (gamma, beta, and neutron)-free background spectrum. This has been achieved by the simultaneous measurement of phonon and light signals with the CRESST (Cryogenic Rare Event Search with Superconducting Thermometers) cryogenic detectors. A half-life of T-1/2=(1.8+/-0.2)x10(18) years and an energy release of Q=[2516.4+/-1.1(stat.)+/-1.2(sys.)] keV have been measured. New limits are also set on the half-lives of the other naturally occurring tungsten isotopes.
引用
收藏
页码:064606 / 1
页数:6
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