Measurements of the ion fraction and mobility of $\ensuremath{\alpha}\text{-}$ and $\ensuremath{\beta}$-decay products in liquid xenon using the EXO-200 detector

	Measurements of the ion fraction and mobility of $\ensuremath{\alpha}\text{-}$ and $\ensuremath{\beta}$-decay products in liquid xenon using the EXO-200 detector
	EXO-200 Collaboration
刊名	PHYSICAL REVIEW C
	2015
卷号	92 期号:4 页码:45504
英文摘要	Alpha decays in the EXO-200 detector are used to measure the fraction of charged Po-218 and Bi-214 daughters created from alpha and beta decays, respectively. Rn-222 alpha decays in liquid xenon (LXe) are found to produce Po-218(+) ions 50.3 +/- 3.0% of the time, while the remainder of the Po-218 atoms are neutral. The fraction of Bi-214(+) from Pb-214 beta decays in LXe is found to be 76.4 +/- 5.7%, inferred from the relative rates of Po-218 and Po-214 alpha decays in the LXe. The average velocity of 218Po ions is observed to decrease for longer drift times. Initially the ions have a mobility of 0.390 +/- 0.006 cm(2) /(kVs), and at long drift times the mobility is 0.219 +/- 0.004 cm(2) /(kVs). Time constants associated with the change in mobility during drift of the Po-218(+) ions are found to be proportional to the electron lifetime in the LXe.
学科主题	Physics
类目[WOS]	Physics, Nuclear
收录类别	SCI
WOS记录号	WOS:000363526000006
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/229001]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	EXO-200 Collaboration. Measurements of the ion fraction and mobility of $\ensuremath{\alpha}\text{-}$ and $\ensuremath{\beta}$-decay products in liquid xenon using the EXO-200 detector[J]. PHYSICAL REVIEW C,2015,92(4):45504.
APA	EXO-200 Collaboration.(2015).Measurements of the ion fraction and mobility of $\ensuremath{\alpha}\text{-}$ and $\ensuremath{\beta}$-decay products in liquid xenon using the EXO-200 detector.PHYSICAL REVIEW C,92(4),45504.
MLA	EXO-200 Collaboration."Measurements of the ion fraction and mobility of $\ensuremath{\alpha}\text{-}$ and $\ensuremath{\beta}$-decay products in liquid xenon using the EXO-200 detector".PHYSICAL REVIEW C 92.4(2015):45504.