Production of radioactive isotopes through cosmic muon spallation in KamLAND

被引：154

作者：

Abe, S. ^{[1
]}

Enomoto, S. ^{[1
,2
]}

Furuno, K. ^{[1
]}

Gando, Y. ^{[1
]}

Ikeda, H. ^{[1
]}

Inoue, K. ^{[1
,2
]}

Kibe, Y. ^{[1
]}

Kishimoto, Y. ^{[1
]}

Koga, M. ^{[1
,2
]}

Minekawa, Y. ^{[1
]}

Mitsui, T. ^{[1
]}

Nakajima, K. ^{[1
]}

Nakamura, K. ^{[1
,2
]}

Nakamura, M. ^{[1
]}

Shimizu, I. ^{[1
]}

Shimizu, Y. ^{[1
]}

Shirai, J. ^{[1
]}

Suekane, F. ^{[1
]}

Suzuki, A. ^{[1
]}

Takemoto, Y. ^{[1
]}

Tamae, K. ^{[1
]}

Terashima, A. ^{[1
]}

Watanabe, H. ^{[1
]}

Yonezawa, E. ^{[1
]}

Yoshida, S. ^{[1
]}

Kozlov, A. ^{[2
]}

Murayama, H. ^{[2
,3
,4
]}

Busenitz, J. ^{[5
]}

Classen, T. ^{[5
]}

Grant, C. ^{[5
]}

Keefer, G. ^{[5
]}

Leonard, D. S. ^{[5
]}

McKee, D. ^{[5
]}

Piepke, A. ^{[2
,5
]}

Banks, T. I. ^{[3
,4
]}

Bloxham, T. ^{[3
,4
]}

Detwiler, J. A. ^{[3
,4
]}

Freedman, S. J. ^{[2
,3
,4
]}

Fujikawa, B. K. ^{[2
,3
,4
]}

Gray, F. ^{[3
,4
]}

Guardincerri, E. ^{[3
,4
]}

Hsu, L. ^{[3
,4
]}

Ichimura, K. ^{[3
,4
]}

Kadel, R. ^{[3
,4
]}

Lendvai, C. ^{[3
,4
]}

Luk, K. -B. ^{[3
,4
]}

O'Donnell, T. ^{[3
,4
]}

Steiner, H. M. ^{[3
,4
]}

Winslow, L. A. ^{[3
,4
]}

机构：

[1] Tohoku Univ, Res Ctr Neutrino Sci, Sendai, Miyagi 9808578, Japan

[2] Univ Tokyo, Inst Phys & Math Universe, Kashiwa, Chiba 2778568, Japan

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

[4] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

[5] Univ Alabama, Dept Phys & Astron, Tuscaloosa, AL 35487 USA

[6] CALTECH, WK Kellogg Radiat Lab, Pasadena, CA 91125 USA

[7] Colorado State Univ, Dept Phys, Ft Collins, CO 80523 USA

[8] Drexel Univ, Dept Phys, Philadelphia, PA 19104 USA

[9] Univ Hawaii Manoa, Dept Phys & Astron, Honolulu, HI 96822 USA

[10] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[11] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA

[12] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

[13] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[14] Triangle Univ Nucl Lab, Durham, NC 27708 USA

[15] Duke Univ, Dept Phys, Durham, NC 27706 USA

[16] Univ N Carolina, Dept Phys, Chapel Hill, NC USA

[17] N Carolina Cent Univ, Dept Phys, Durham, NC USA

[18] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[19] CEN Bordeaux Gradignan, CNRS, IN2P3, F-33175 Gradignan, France

[20] Univ Bordeaux 1, F-33175 Gradignan, France

[21] Nikhef, NL-1098 XG Amsterdam, Netherlands

来源：

PHYSICAL REVIEW C | 2010年 / 81卷 / 02期

基金：

美国国家科学基金会;

关键词：

INDUCED NEUTRON; ENERGY-LEVELS; LIGHT-NUCLEI; RAY MUONS; PROPAGATION; SOLUBILITY; SIMULATION; NEUTRINOS; GEANT4; SINGLE;

D O I：

10.1103/PhysRevC.81.025807

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Radioactive isotopes produced through cosmic muon spallation are a background for rare-event detection in. detectors, double-beta-decay experiments, and dark-matter searches. Understanding the nature of cosmogenic backgrounds is particularly important for future experiments aiming to determine the pep and CNO solar neutrino fluxes, for which the background is dominated by the spallation production of C-11. Data from the Kamioka liquid-scintillator antineutrino detector (KamLAND) provides valuable information for better understanding these backgrounds, especially in liquid scintillators, and for checking estimates from current simulations based upon MUSIC, FLUKA, and GEANT4. Using the time correlation between detected muons and neutron captures, the neutron production yield in the KamLAND liquid scintillator is measured to be Y-n = (2.8 +/- 0.3) x 10(-4) mu(-1) g(-1) cm(2). For other isotopes, the production yield is determined from the observed time correlation related to known isotope lifetimes. We find some yields are inconsistent with extrapolations based on an accelerator muon beam experiment.

引用

页数：14

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