Preparation of Neutron-activated Xenon for Liquid Xenon Detector Calibration

Details Preparation of Neutron-activated Xenon for Liquid Xenon Detector Calibration Preparation of Neutron-activated Xenon for Liquid Xenon Detector Calibration

2007-08-15

arxiv.org/abs/0708.1976v2

Nucl.Instrum.Meth.A582:569-574,2007

Physics

Instrumentation and Detectors

to be published in NIM A, corrected typos in Table 1 and Fig.6 of the previous version

Scientific paper

10.1016/j.nima.2007.08.180

We report the preparation of neutron-activated xenon for the calibration of liquid xenon (LXe) detectors. Gamma rays from the decay of xenon metastable states, produced by fast neutron activation, were detected and their activities measured in a LXe scintillation detector. Following a five-day activation of natural xenon gas with a Cf-252 (4 x 10^5 n/s) source, the activities of two gamma ray lines at 164 keV and 236 keV, from Xe-131m and Xe-129m metastable states, were measured at about 95 and 130 Bq/kg, respectively. We also observed three additional lines at 35 keV, 100 keV and 275 keV, which decay away within a few days. No long-lifetime activity was observed after the neutron activation.

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