期刊
JOURNAL OF INSTRUMENTATION
卷 12, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1748-0221/12/06/P06014
关键词
Dark Matter detectors (WIMPs, axions, etc.); Solid state detectors; Instrumentation and methods for time-of-flight (TOF) spectroscopy; Neutron detectors (cold, thermal, fast neutrons)
资金
- National Science Foundation [PHY-1419765]
- CONACYT, Paraguay [14-INV-092]
- CONACYT, MExico [203501]
- Swiss National Science Foundation [153654]
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125897, 1430152] Funding Source: National Science Foundation
We have measured the ionization efficiency of silicon nuclear recoils with kinetic energy between 1.8 and 20 keV. We bombarded a silicon-drift diode with a neutron beam to perform an elastic-scattering experiment. A broad-energy neutron spectrum was used and the nuclear recoil energy was reconstructed using a measurement of the time of flight and scattering angle of the scattered neutron. The overall trend of the results of this work is well described by the theory of Lindhard et al. above 4 keV of recoil energy. Below this energy, the presented data shows a deviation from the model. The data indicates a faster drop than the theory prediction at low energies.
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