Measurements of the ion fraction and mobility of α- And β -decay products in liquid xenon using the EXO-200 detector

doi:10.1103/PhysRevC.92.045504

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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Abstract

Alpha decays in the EXO-200 detector are used to measure the fraction of charged Po218 and Bi214 daughters created from α and β decays, respectively. Rn222 α decays in liquid xenon (LXe) are found to produce Po+218 ions 50.3±3.0% of the time, while the remainder of the Po218 atoms are neutral. The fraction of Bi+214 from Pb214 β decays in LXe is found to be 76.4±5.7%, inferred from the relative rates of Po218 and Po214 α decays in the LXe. The average velocity of Po218 ions is observed to decrease for longer drift times. Initially the ions have a mobility of 0.390±0.006cm2/(kVs), and at long drift times the mobility is 0.219±0.004cm2/(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.

Original language	English
Article number	045504
Journal	Physical Review C - Nuclear Physics
Volume	92
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.92.045504
State	Published - Oct 28 2015

Bibliographical note

Publisher Copyright:
© 2015 American Physical Society.

Funding

Funders	Funder number
National Science Foundation Arctic Social Science Program	1307362, 1132428
National Science Foundation Arctic Social Science Program

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1103/PhysRevC.92.045504

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@article{77ba3eb76c1e4aa6bdcd416f3b69b70b,

title = "Measurements of the ion fraction and mobility of α- And β -decay products in liquid xenon using the EXO-200 detector",

abstract = "Alpha decays in the EXO-200 detector are used to measure the fraction of charged Po218 and Bi214 daughters created from α and β decays, respectively. Rn222 α decays in liquid xenon (LXe) are found to produce Po+218 ions 50.3±3.0% of the time, while the remainder of the Po218 atoms are neutral. The fraction of Bi+214 from Pb214 β decays in LXe is found to be 76.4±5.7%, inferred from the relative rates of Po218 and Po214 α decays in the LXe. The average velocity of Po218 ions is observed to decrease for longer drift times. Initially the ions have a mobility of 0.390±0.006cm2/(kVs), and at long drift times the mobility is 0.219±0.004cm2/(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.",

author = "Albert, {J. B.} and Auty, {D. J.} and Barbeau, {P. S.} and D. Beck and V. Belov and M. Breidenbach and T. Brunner and A. Burenkov and Cao, {G. F.} and C. Chambers and B. Cleveland and M. Coon and A. Craycraft and T. Daniels and M. Danilov and Daugherty, {S. J.} and Davis, {C. G.} and J. Davis and S. Delaquis and {Der Mesrobian-Kabakian}, A. and R. Devoe and T. Didberidze and A. Dolgolenko and Dolinski, {M. J.} and M. Dunford and W. Fairbank and J. Farine and W. Feldmeier and P. Fierlinger and D. Fudenberg and R. Gornea and K. Graham and G. Gratta and C. Hall and M. Hughes and Jewell, {M. J.} and Jiang, {X. S.} and A. Johnson and Johnson, {T. N.} and S. Johnston and A. Karelin and Kaufman, {L. J.} and R. Killick and T. Koffas and S. Kravitz and A. Kuchenkov and Kumar, {K. S.} and Leonard, {D. S.} and C. Licciardi and R. Maclellan",

note = "Publisher Copyright: {\textcopyright} 2015 American Physical Society.",

year = "2015",

month = oct,

day = "28",

doi = "10.1103/PhysRevC.92.045504",

language = "English",

volume = "92",

number = "4",

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TY - JOUR

T1 - Measurements of the ion fraction and mobility of α- And β -decay products in liquid xenon using the EXO-200 detector

AU - Albert, J. B.

AU - Auty, D. J.

AU - Barbeau, P. S.

AU - Beck, D.

AU - Belov, V.

AU - Breidenbach, M.

AU - Brunner, T.

AU - Burenkov, A.

AU - Cao, G. F.

AU - Chambers, C.

AU - Cleveland, B.

AU - Coon, M.

AU - Craycraft, A.

AU - Daniels, T.

AU - Danilov, M.

AU - Daugherty, S. J.

AU - Davis, C. G.

AU - Davis, J.

AU - Delaquis, S.

AU - Der Mesrobian-Kabakian, A.

AU - Devoe, R.

AU - Didberidze, T.

AU - Dolgolenko, A.

AU - Dolinski, M. J.

AU - Dunford, M.

AU - Fairbank, W.

AU - Farine, J.

AU - Feldmeier, W.

AU - Fierlinger, P.

AU - Fudenberg, D.

AU - Gornea, R.

AU - Graham, K.

AU - Gratta, G.

AU - Hall, C.

AU - Hughes, M.

AU - Jewell, M. J.

AU - Jiang, X. S.

AU - Johnson, A.

AU - Johnson, T. N.

AU - Johnston, S.

AU - Karelin, A.

AU - Kaufman, L. J.

AU - Killick, R.

AU - Koffas, T.

AU - Kravitz, S.

AU - Kuchenkov, A.

AU - Kumar, K. S.

AU - Leonard, D. S.

AU - Licciardi, C.

AU - Maclellan, R.

PY - 2015/10/28

Y1 - 2015/10/28

N2 - Alpha decays in the EXO-200 detector are used to measure the fraction of charged Po218 and Bi214 daughters created from α and β decays, respectively. Rn222 α decays in liquid xenon (LXe) are found to produce Po+218 ions 50.3±3.0% of the time, while the remainder of the Po218 atoms are neutral. The fraction of Bi+214 from Pb214 β decays in LXe is found to be 76.4±5.7%, inferred from the relative rates of Po218 and Po214 α decays in the LXe. The average velocity of Po218 ions is observed to decrease for longer drift times. Initially the ions have a mobility of 0.390±0.006cm2/(kVs), and at long drift times the mobility is 0.219±0.004cm2/(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.

AB - Alpha decays in the EXO-200 detector are used to measure the fraction of charged Po218 and Bi214 daughters created from α and β decays, respectively. Rn222 α decays in liquid xenon (LXe) are found to produce Po+218 ions 50.3±3.0% of the time, while the remainder of the Po218 atoms are neutral. The fraction of Bi+214 from Pb214 β decays in LXe is found to be 76.4±5.7%, inferred from the relative rates of Po218 and Po214 α decays in the LXe. The average velocity of Po218 ions is observed to decrease for longer drift times. Initially the ions have a mobility of 0.390±0.006cm2/(kVs), and at long drift times the mobility is 0.219±0.004cm2/(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.

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U2 - 10.1103/PhysRevC.92.045504

DO - 10.1103/PhysRevC.92.045504

M3 - Article

AN - SCOPUS:84946592723

SN - 0556-2813

VL - 92

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 045504

ER -

Measurements of the ion fraction and mobility of α- And β -decay products in liquid xenon using the EXO-200 detector

Abstract

Bibliographical note

Funding

ASJC Scopus subject areas

Access to Document

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