Measurements of the Ion Fraction and Mobility of α− and β-Decay Products in Liquid Xenon Using the EXO-200 Detector

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dc.contributor.author Piepke, Andreas
dc.date.accessioned 2019-05-14T16:13:56Z
dc.date.available 2019-05-14T16:13:56Z
dc.date.copyright 2015
dc.date.issued 2015-10-28
dc.identifier.citation Albert, J., et al. (2015): Measurements of the Ion Fraction and Mobility of α− and β- Decay Products in Liquid Xenon Using the EXO-200 Detector. Physical Review C, 92(4). DOI: https://doi.org/10.1103/PhysRevC.92.045504 en_US
dc.identifier.issn 0556-2813
dc.identifier.uri http://ir.ua.edu/handle/123456789/5529
dc.description.abstract Alpha decays in the EXO-200 detector are used to measure the fraction of charged ²¹⁸Po and ²¹⁴Bi daughters created from α and β decays, respectively. ²²²Rn α decays in liquid xenon (LXe) are found to produce ²¹⁸Po+ ions 50.3 ± 3.0% of the time, while the remainder of the ²¹⁸Po atoms are neutral. The fraction of ²¹⁴Bi+ from ²¹⁴Pb β decays in LXe is found to be 76.4 ± 5.7%, inferred from the relative rates of ²¹⁸Po and ²¹⁴Po α 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 cm²/(kVs), and at long drift times the mobility is 0.219 ± 0.004 cm²/(kVs). Time constants associated with the change in mobility during drift of the ²¹⁸Po+ ions are found to be proportional to the electron lifetime in the LXe. en_US
dc.format.mimetype application/pdf en_US
dc.language English en_US
dc.publisher American Physical Society en_US
dc.subject Ion fraction en_US
dc.subject.lcsh Decay schemes (Radioactivity) en_US
dc.subject.lcsh Double beta decay en_US
dc.title Measurements of the Ion Fraction and Mobility of α− and β-Decay Products in Liquid Xenon Using the EXO-200 Detector en_US
dc.type text en_US
dc.rights.holder American Physical Society en_US


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