Issue |
EPL
Volume 108, Number 1, October 2014
|
|
---|---|---|
Article Number | 12001 | |
Number of page(s) | 6 | |
Section | Nuclear Physics | |
DOI | https://doi.org/10.1209/0295-5075/108/12001 | |
Published online | 03 October 2014 |
Measurement of the ionization yield of nuclear recoils in liquid argon at 80 and 233 keV
1 Budker Institute of Nuclear Physics SB RAS - Novosibirsk, 630090, Russia
2 Novosibirsk State University - Novosibirsk, 630090, Russia
(a) A.F.Buzulutskov@inp.nsk.su (corresponding author)
Received: 28 July 2014
Accepted: 15 September 2014
The energy calibration of nuclear recoil detectors is of primary importance to rare-event experiments such as those of direct dark matter search and coherent neutrino-nucleus scattering. In particular, such a calibration is performed by measuring the ionization yield of nuclear recoils in liquid Ar and Xe detection media, using neutron elastic scattering off nuclei. In the present work, the ionization yield for nuclear recoils in liquid Ar has for the first time been measured in the higher energy range, at 80 and 233 keV, using a two-phase Cryogenic Avalanche Detector (CRAD) and DD neutron generator. The ionization yield in liquid Ar at an electric field of 2.3 kV/cm amounted to and at 80 and 233 keV, respectively. The Jaffe model for nuclear recoil-induced ionization, in contrast to that of Thomas-Imel, can probably consistently describe the energy dependence of the ionization yield.
PACS: 29.40.-n – Radiation detectors / 95.55.Vj – Neutrino, muon, pion, and other elementary particle detectors; cosmic ray detectors / 95.35.+d – Dark matter (stellar, interstellar, galactic, and cosmological)
© EPLA, 2014
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.