TY - JOUR
T1 - Energy deposition on nuclear emulsion by slow recoil ions for directional dark matter searches
AU - Hitachi, Akira
AU - Mozumder, A.
AU - Nakamura, Kiseki D.
N1 - Funding Information:
We would like to thank Dr. T. Naka for guiding us on these topics, facilitating variable discussions, and providing information on nuclear emulsions. We are grateful to Professor T. Tani for reading an early version of the manuscript and providing helpful comments. The work described herein was supported in part by the Office of Basic Energy Science of the Department of Energy. This is Document No. NDRL 5242 from the Notre Dame Radiation Laboratory. This work was supported by KAKENHI Grant-in-Aids (Grant No. 18K13567). The manuscript English was edited by enago .
Publisher Copyright:
© 2022 American Physical Society.
PY - 2022/3/15
Y1 - 2022/3/15
N2 - The electronic energy deposited on nuclear emulsions by C ions of 5-200 keV and Kr ions of 5-600 keV is evaluated and compared with those deposited by fast ions for designing and fabricating fine-grain nuclear emulsions for directional dark matter searches. The nuclear quenching factor and the electronic linear energy transfer, which refers to the specific electronic energy deposited along the ion track, are evaluated. The so-called core and penumbra of heavy-ion track structure is modified to understand the track caused by recoil ions produced by dark matter candidate, i.e., weakly interacting massive particles, striking a nucleus in the AgBr crystal of nuclear emulsion. Very heavy recoil ions, 100-180 keV Pb ions, produced in a decay are also studied. Furthermore, the track structures due to protons of 25-80 keV are evaluated to consider the influence of background neutrons in underground laboratories.
AB - The electronic energy deposited on nuclear emulsions by C ions of 5-200 keV and Kr ions of 5-600 keV is evaluated and compared with those deposited by fast ions for designing and fabricating fine-grain nuclear emulsions for directional dark matter searches. The nuclear quenching factor and the electronic linear energy transfer, which refers to the specific electronic energy deposited along the ion track, are evaluated. The so-called core and penumbra of heavy-ion track structure is modified to understand the track caused by recoil ions produced by dark matter candidate, i.e., weakly interacting massive particles, striking a nucleus in the AgBr crystal of nuclear emulsion. Very heavy recoil ions, 100-180 keV Pb ions, produced in a decay are also studied. Furthermore, the track structures due to protons of 25-80 keV are evaluated to consider the influence of background neutrons in underground laboratories.
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U2 - 10.1103/PhysRevD.105.063014
DO - 10.1103/PhysRevD.105.063014
M3 - Article
AN - SCOPUS:85126913280
SN - 2470-0010
VL - 105
JO - Physical Review D
JF - Physical Review D
IS - 6
M1 - 063014
ER -