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arXiv physics/9910044physics.ins-det
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用于暗物质搜寻的CsI(Tl)晶体的测试

Test of CsI(Tl) crystals for the Dark Matter Search

H. J. Kim, H. J. Ahn, S. K. Kim, E. Won, T. Y. Kim, Y. D. Kim, M. H. Lee, J. S. Chai, J. H. Ha

摘要:

CsI(Tl)晶体中的核反冲能的测定可以作为弱相互作用大质量粒子(WIMP)研究的基础。我们证明,低到几keV的低能γ射线检测CsI(Tl)晶体探测器。用X射线源在6keV处观察到一个清晰的峰。在低至X射线的范围内,获得了良好的能量分辨率和线性度。此外,我们还表明,α粒子和γ射线可以清楚地分离使用不同的时间特性的晶体。

英文摘要:

Searches for weakly interacting massive particles(WIMP) can be based on the dete ction of nuclear recoil energy in CsI(Tl) crystals. We demonstrate that low energy gamma rays down to few keV is detected with CsI(Tl) crystal detector. A clear peak at 6 keV is observed using X-ray source. Good energy resolution and linearity have been achieved down to X-ray region. In addition, we also show that alpha particles and gamma rays can be clearly separated using the different time characteristics of the crystal.

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