Applications of an 88Y/Be Photoneutron Calibration Source to Dark Matter and Neutrino Experiments

被引：33

作者：

Collar, J. I. ^{[1
,2
]}

机构：

[1] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA

[2] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 21期

基金：

美国国家科学基金会;

关键词：

Coherent scattering;

D O I：

10.1103/PhysRevLett.110.211101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The low-energy monochromatic neutron emission from an Y-88/Be source can be exploited to mimic the few keV(nr) nuclear recoils expected from low-mass weakly interacting massive particles and coherent scattering of neutrinos off nuclei. Using this source, a less than or similar to 10% quenching factor is measured for sodium recoils below 24 keV(nr) in NaI[Tl]. This is considerably smaller than the 30% typically adopted in the interpretation of the DAMA/LIBRA dark matter experiment, resulting in a marked increase of its tension with other searches, under the standard set of phenomenological assumptions. The method is illustrated for other target materials (superheated and noble liquids).

引用

页数：4

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