Title of article
Scintillation efficiency of nuclear recoils in a CaF2(Eu) crystal for Dark Matter search
Author/Authors
Hazama، نويسنده , , R and Ajimura، نويسنده , , S and Hayakawa، نويسنده , , H and Matsuoka، نويسنده , , K and Miyawaki، نويسنده , , K. Morikubo، نويسنده , , K and Suzuki، نويسنده , , N and Kishimoto، نويسنده , , T، نويسنده ,
Pages
7
From page
297
To page
303
Abstract
The scintillation efficiency (quenching factor) of fluorine and calcium nuclei recoiling in a CaF2(Eu) crystal was measured in an energy region relevant to Dark Matter searches. The recoiling nuclei were obtained via the 19F(n,n′) and 40Ca(n,n′) reactions, where the neutron beam was provided via the d(d,n)3He reaction. The quenching factor of F and Ca nuclei in the CaF2(Eu) crystal was found to be 11–20%, and 9–23% relative to the electron equivalent energy for 53–192 keV and 25–91 keV recoil energies, respectively, and the energy dependence was observed. The quenching factor we measured here is a little larger than that of previous studies, which may depend on the Eu doping concentration of the crystal.
Keywords
Dark Matter search , Scintillation efficiency , Nuclear recoil , CaF2
Journal title
Astroparticle Physics
Record number
2018981
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