The scintillation efficiency of carbon and hydrogen recoils in an organic liquid scintillator for dark matter searches

被引：30

作者：

Hong, J

Craig, WW

Graham, P

Hailey, CJ

Spooner, NJC

Tovey, DR

机构：

[1] Columbia Univ, Columbia Astrophys Lab, New York, NY 10027 USA

[2] Univ Sheffield, Dept Phys, Sheffield S3 7RH, S Yorkshire, England

来源：

ASTROPARTICLE PHYSICS | 2002年 / 16卷 / 03期

关键词：

dark matter; nuclear recoil efficiency; organic liquid scintillator; low energy experiment;

D O I：

10.1016/S0927-6505(01)00114-1

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Dark matter candidates such as the weakly interacting massive particles can be detected through elastic scatterings with a nucleus. The scintillation efficiency of carbon and hydrogen nuclear recoils in an organic liquid scintillator was measured for such a possible dark matter detector. The recoil energies from 50 keV to similar to1 MeV were explored for both nuclei. The carbon recoil efficiency, of particular interest for a dark matter detector, was observed to increase from 0.8(-0.11)(+0.09)% of the electron recoil efficiency at 500 keV to 4.8(-2.99)(+0.85)% at 46 keV. Such an enhancement is very encouraging for the purpose of dark matter searches as well as other similar low-energy experiments. and the results are well described by a modified Birks' light yield formula. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：333 / 338

页数：6

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