期刊
PHYSICS LETTERS B
卷 571, 期 3-4, 页码 132-138出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2003.07.077
关键词
dark matter; WIMP; directional detector; organic scintillator
It is known that scintillation efficiency of organic single crystals depends on the direction of nuclear recoils relative to crystallographic axes. This property could be applied to the directional WIMP dark matter detector. The scintillation efficiency of carbon recoils in a stilbene crystal was measured for recoil energies of 30 keV to 1 MeV using neutrons from Li-7(p, n)Be-7 and Cf-252. Anisotropic response was confirmed in low energy regions. The variation of the scintillation efficiency was about 7%, that could detect the possible dark matter signal. (C) 2003 Published by Elsevier B.V.
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