Chromatographic separation of radioactive noble gases from xenon

被引：22

作者：

Akerib, D. S. ^{[1
,2
,3
]}

Araujo, H. M. ^{[4
]}

Bai, X. ^{[5
]}

Bailey, A. J. ^{[4
]}

Balajthy, J. ^{[6
]}

Beltrame, P. ^{[7
]}

Bernard, E. P. ^{[8
]}

Bernstein, A. ^{[9
]}

Biesiadzinski, T. P. ^{[1
,2
,3
]}

Boulton, E. M. ^{[8
]}

Bramante, R. ^{[1
,2
,3
]}

Cahn, S. B. ^{[8
]}

Carmona-Benitez, M. C. ^{[10
]}

Chan, C. ^{[11
]}

Chiller, A. A. ^{[12
]}

Chiller, C. ^{[12
]}

Coffey, T. ^{[1
]}

Currie, A. ^{[4
]}

Cutter, J. E. ^{[13
]}

Davison, T. J. R. ^{[7
]}

Dobi, A. ^{[14
]}

Dobson, J. E. Y. ^{[15
]}

Druszkiewicz, E. ^{[16
]}

Edwards, B. N. ^{[8
]}

Faham, C. H. ^{[14
]}

Fiorucci, S. ^{[11
,14
]}

Gaitskell, R. J. ^{[11
]}

Gehman, V. M. ^{[14
]}

Ghag, C. ^{[15
]}

Gibson, K. R. ^{[1
]}

Gilchriese, M. G. D. ^{[14
]}

Hall, C. R. ^{[6
]}

Hanhardt, M. ^{[5
,17
]}

Haselschwardt, S. J. ^{[10
]}

Hertel, S. A. ^{[8
,18
]}

Hogan, D. P. ^{[18
]}

Horn, M. ^{[8
,18
]}

Huang, D. Q. ^{[11
]}

Ignarra, C. M. ^{[2
]}

Ihm, M. ^{[18
]}

Jacobsen, R. G. ^{[18
]}

Ji, W. ^{[1
,2
,3
]}

Kamdin, K. ^{[18
]}

Kazkaz, K. ^{[9
]}

Khaitan, D.

Knoche, R. ^{[6
]}

Larsen, N. A. ^{[8
]}

Lee, C. ^{[1
,2
,3
]}

Lenardo, B. G. ^{[9
,13
]}

Lesko, K. T. ^{[14
]}

机构：

[1] Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA

[2] SLAC Natl Accelerator Lab, 2575 Sand Hill Rd, Menlo Pk, CA 94025 USA

[3] Stanford Univ, Kavli Inst Particle Astrophys & Cosmol, 452 Lomita Mall, Stanford, CA 94309 USA

[4] Imperial Coll London, Blackett Lab, High Energy Phys, London SW7 2BZ, England

[5] South Dakota Sch Mines & Technol, 501 East St Joseph St, Rapid City, SD 57701 USA

[6] Univ Maryland, Dept Phys, College Pk, MD 20742 USA

[7] Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh EH9 3FD, Midlothian, Scotland

[8] Yale Univ, Dept Phys, 217 Prospect St, New Haven, CT 06511 USA

[9] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA

[10] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA

[11] Brown Univ, Dept Phys, 182 Hope St, Providence, RI 02912 USA

[12] Univ South Dakota, Dept Phys, 414E Clark St, Vermillion, SD 57069 USA

[13] Univ Calif Davis, Dept Phys, One Shields Ave, Davis, CA 95616 USA

[14] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA

[15] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

[16] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA

[17] South Dakota Sci & Technol Author, Sanford Underground Res Facil, Lead, SD 57754 USA

[18] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA

[19] Univ Coimbra, Dept Phys, LIP Coimbra, Rua Larga, P-3004516 Coimbra, Portugal

[20] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA

[21] SUNY Albany, Dept Phys, 1400 Washington Ave, Albany, NY 12222 USA

[22] Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA

来源：

ASTROPARTICLE PHYSICS | 2018年 / 97卷

基金：

美国国家科学基金会;

关键词：

Xenon; Krypton; Adsorption; Chromatography; Gas Separation; Dark Matter; KR-85; ADSORPTION; KRYPTON; SYSTEM;

D O I：

10.1016/j.astropartphys.2017.10.014

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The Large Underground Xenon (LUX) experiment operates at the Sanford Underground Research Facility to detect nuclear recoils from the hypothetical Weakly Interacting Massive Particles (WIMPs) on a liquid xenon target. Liquid xenon typically contains trace amounts of the noble radioactive isotopes Kr-85 and Ar-39 that are not removed by the in situ gas purification system. The decays of these isotopes at concentrations typical of research-grade xenon would be a dominant background for a WIMP search experiment. To remove these impurities from the liquid xenon, a chromatographic separation system based on adsorption on activated charcoal was built. 400 kg of xenon was processed, reducing the average concentration of krypton from 130 ppb to 3.5 ppt as measured by a cold-trap assisted mass spectroscopy system. A 50 kg batch spiked to 0.001 g/g of krypton was processed twice and reduced to an upper limit of 0.2 ppt. (C) 2017 Elsevier B.V. All rights reserved.

引用

页码：80 / 87

页数：8

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