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Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using the EXO-200

Submit Time: 2016-09-10
Author: Albert, J. B. and others 1 ;
Institute: 1.EXO-200 Collaboration;

Abstracts

Alpha decays in the EXO-200 detector are used to measure the fraction of charged?18Po燼nd?14Bi燿aughters created from alpha and beta decays, respectively.?22Rn燼lpha decays in liquid xenon (LXe) are found to produce218Po+爄ons?0.3?.0%爋f the time, while the remainder of the?18Po燼toms are neutral. The fraction of?14Bi+爁rom?14Pb燽eta decays in LXe is found to be?6.4?.7%, inferred from the relative rates of?18Poand?14Po燼lpha decays in the LXe. The average velocity of?18Po爄ons is observed to decrease for longer drift times. Initially the ions have a mobility of?.390?.006燾m2/(kV爏), and at long drift times the mobility is?.219?.004燾m2/(kV爏). Time constants associated with the change in mobility during drift of the?18Po+爄ons are found to be proportional to the electron lifetime in the LXe.
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Keywords: EXO-200; ;
Recommended references: Albert, J. B. and others.(2016).Measurements of the ion fraction and mobility of alpha and beta decay products in liquid xenon using the EXO-200.[ChinaXiv:201609.00555] (Click&Copy)
Version History
[V1] 2016-09-10 08:41:19 chinaXiv:201609.00555V1 Download
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