Measurements of anisotropic scintillation efficiency for carbon recoils in a stilbene crystal for dark matter detection
Measurements of anisotropic scintillation efficiency for carbon recoils in a stilbene crystal for dark matter detection
复制标题
用于暗物质检测的二苯乙烯晶体中碳反冲的各向异性闪烁效率的测量
DOI：
10.1016/j.physletb.2003.07.077
复制
发表时间：
2003
影响因子：
4.4
通讯作者：
W. Suganuma
中科院分区：
文献类型：
--
作者：
H. Sekiya;M. Minowa;Y. Shimizu;Y. Inoue;W. Suganuma
众所周知，有机单晶的闪烁效率取决于核反冲相对于结晶轴的方向。这一性质可以应用于定向WIMP暗物质探测器。用7Li(p，n)7Be和252Cf的中子测量了二苯乙烯晶体中碳反冲的闪烁效率，反冲能量从30keV到1keV。在低能区证实了各向异性响应。闪烁效率的变化约为7%，可以探测到可能的暗物质信号。
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 from7Li ( p , n )7Be and252Cf. 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.