Quenching factor measurements of neon nuclei in neon gas
Journal Article
·
· Physical Review. D.
The NEWS-G collaboration uses spherical proportional counters (SPCs) to search for weakly interacting massive particles (WIMPs). Here, in this paper, we report the first measurements of the nuclear quenching factor in neon gas at 2 bar using an SPC deployed in a neutron beam at the TUNL facility. The energy-dependence of the nuclear quenching factor is modeled using a simple power law: $$αE^{β}_{nr}$$; we determine its parameters by simultaneously fitting the data collected with the detector over a range of energies. We measured the following parameters in Ne : CH4 at 2 bar: α= 0.2801±0.0050 (fit) ±0.0045 (sys) and β=0.0867±0.020 (fit) ±0.006 (sys). Our measurements do not agree with expected values from SRIM or Lindhard theory. We demonstrated the feasibility of performing quenching factor measurements at sub-keV energies in gases using SPCs and a neutron beam.
- Research Organization:
- Duke Univ., Durham, NC (United States). Triangle Universities Nuclear Laboratory
- Sponsoring Organization:
- USDOE
- Contributing Organization:
- NEWS-G Collaboration
- Grant/Contract Number:
- FG02-97ER41033
- OSTI ID:
- 1907439
- Journal Information:
- Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 5 Vol. 105; ISSN 2470-0010
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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