Horn, M;
Belov, VA;
Akimov, DY;
Araújo, HM;
Barnes, EJ;
Burenkov, AA;
Chepel, V;
... Walker, RJ; + view all
(2011)
Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data.
Physics Letters B
, 705
(5)
pp. 471-476.
10.1016/j.physletb.2011.10.038.
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Abstract
Scintillation and ionisation yields for nuclear recoils in liquid xenon above 10 keVnr (nuclear recoil energy) are deduced from data acquired using broadband Am-Be neutron sources. The nuclear recoil data from several exposures to two sources were compared to detailed simulations. Energy-dependent scintillation and ionisation yields giving acceptable fits to the data were derived. Efficiency and resolution effects are treated using a light collection Monte Carlo, measured photomultiplier response profiles and hardware trigger studies. A gradual fall in scintillation yield below ~40 keVnr is found, together with a rising ionisation yield; both are in agreement with the latest independent measurements. The analysis method is applied to the most recent ZEPLIN-III data, acquired with a significantly upgraded detector and a precision-calibrated Am-Be source, as well as to the earlier data from the first run in 2008. A new method for deriving the recoil scintillation yield, which includes sub-threshold S1 events, is also presented which confirms the main analysis.
| Type: | Article |
|---|---|
| Title: | Nuclear recoil scintillation and ionisation yields in liquid xenon from ZEPLIN-III data |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.physletb.2011.10.038 |
| Publisher version: | http://doi.org/10.1016/j.physletb.2011.10.038 |
| Language: | English |
| Additional information: | Copyright © 2011 Elsevier B.V. Open Access funded by SCOAP3 - Sponsoring Consortium for Open Access Publishing in Particle Physics - Under a Creative Commons license. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/1352137 |
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