Cosmogenic Production as a Background in Searching for Rare Physics Processes - INSPIRE

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Cosmogenic Production as a Background in Searching for Rare Physics Processes

D.-M. Mei
(
- South Dakota State U.
)
,
Z.-B. Yin
(
- South Dakota State U. and
- Hua-Zhong Normal U.
)
,
S.R. Elliott
(
- Los Alamos
)

Mar, 2009

11 pages

Published in:

Astropart.Phys. 31 (2009) 417-420

e-Print:

0903.2273 [nucl-ex]

DOI:

10.1016/j.astropartphys.2009.04.004

View in:

ADS Abstract Service

reference search63 citations

Citations per year

Abstract: (arXiv)

We revisit calculations of the cosmogenic production rates for several long-lived isotopes that are potential sources of background in searching for rare physics processes such as the detection of dark matter and neutrinoless double-beta decay. Using updated cosmic-ray neutron flux measurements, we use TALYS 1.0 to investigate the cosmogenic activation of stable isotopes of several detector targets and find that the cosmogenic isotopes produced inside the target materials and cryostat can result in large backgrounds for dark matter searches and neutrinoless double-beta decay. We use previously published low-background HPGe data to constrain the production of

^{3}H

on the surface and the upper limit is consistent with our calculation. We note that cosmogenic production of several isotopes in various targets can generate potential backgrounds for dark matter detection and neutrinoless double-beta decay with a massive detector, thus great care should be taken to limit and/or deal with the cosmogenic activation of the targets.

Note:

11 pages, 4 figures, and 4 tables

28.41.Qb
25.40.Sc
13.85.Tp
23.40.-s
95.35.+d
29.40.Wk
Cosmogenic activation
Dark matter detection
Double-beta decay
double-beta decay: (0neutrino)

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