Measurement of the 8Li(α,n)11B reaction and astrophysical implications -: art. no. 065801

被引：45

作者：

Mizoi, Y

Fukuda, T

Matsuyama, Y

Miyachi, T

Miyatake, H

Aoi, N

Fukuda, N

Notani, M

Watanabe, YX

Yoneda, K

Ishihara, M

Sakurai, H

Watanabe, Y

Yoshida, A

机构：

[1] Univ Tokyo, Inst Nucl Study, Tokyo 1880002, Japan

[2] Univ Tokyo, Dept Phys, Bunkyou Ku, Tokyo 1138654, Japan

[3] Inst Phys & Chem Res, Wako, Saitama 3510198, Japan

来源：

PHYSICAL REVIEW C | 2000年 / 62卷 / 06期

关键词：

D O I：

10.1103/PhysRevC.62.065801

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：

We have measured the Li-8(alpha ,n)B-11 reaction directly and exclusively, and determined the total cross sections in the center-of-mass energy of 1.5-7.0 MeV, by using a new-type gas counter, multiple-sampling and tracking proportional chamber (MSTPC), and neutron counters. This experiment was performed in the condition of inverse kinematics. The Li-8 beam was produced by the RIKEN projectile-fragment separator, and injected into the MSTPC filled with He-4 gas, which worked as a detector gas and served as a target. The reaction cross section obtained in the present exclusive measurement is about half of the one obtained in previous inclusive measurements.

引用

页数：9

共 38 条

[1] THE QUARK-HADRON PHASE-TRANSITION AND PRIMORDIAL NUCLEOSYNTHESIS [J].

ALCOCK, C ;

FULLER, GM ;

MATHEWS, GJ .

ASTROPHYSICAL JOURNAL, 1987, 320 (02) :439-447

[2]

Aoi N, 1997, NUCL PHYS A, V616, pC181, DOI 10.1016/S0375-9474(97)00087-0

[3] COSMOLOGICAL BARYON DIFFUSION AND NUCLEOSYNTHESIS [J].

APPLEGATE, JH ;

HOGAN, CJ ;

SCHERRER, RJ .

PHYSICAL REVIEW D, 1987, 35 (04) :1151-1160

[4] RELICS OF COSMIC QUARK CONDENSATION [J].

APPLEGATE, JH ;

HOGAN, CJ .

PHYSICAL REVIEW D, 1985, 31 (12) :3037-3045

[5]

BAHCALL NA, 1995, ASTROPHYS J, V447, pL81, DOI 10.1086/309577

[6] MEASUREMENT OF THE LI-8(A,N) B-11 REACTION CROSS-SECTION AT ENERGIES OF ASTROPHYSICAL INTEREST [J].

BOYD, RN ;

TANIHATA, I ;

INABE, N ;

KUBO, T ;

NAKAGAWA, T ;

SUZUKI, T ;

YONOKURA, M ;

BAI, XX ;

KIMURA, K ;

KUBONO, S ;

SHIMOURA, S ;

XU, HS ;

HIRATA, D .

PHYSICAL REVIEW LETTERS, 1992, 68 (09) :1283-1286

[7] IMPROVED PREDICTIONS OF NEUTRON DETECTION EFFICIENCY FOR HYDROCARBON SCINTILLATORS FROM 1 MEV TO ABOUT 300 MEV [J].

CECIL, RA ;

ANDERSON, BD ;

MADEY, R .

NUCLEAR INSTRUMENTS & METHODS, 1979, 161 (03) :439-447

[8] A MULTIPLE SAMPLING IONIZATION-CHAMBER (MUSIC) FOR MEASURING THE CHARGE OF RELATIVISTIC HEAVY-IONS [J].

CHRISTIE, WB ;

ROMERO, JL ;

BRADY, FP ;

TULL, CE ;

CASTANEDA, CM ;

BARASCH, EF ;

WEBB, ML ;

DRUMMOND, JR ;

CRAWFORD, HJ ;

FLORES, I ;

GREINER, DE ;

LINDSTROM, PJ ;

SANN, H ;

YOUNG, JC .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1987, 255 (03) :466-476

[9] COSMOLOGICAL IMPLICATIONS OF ROSAT OBSERVATIONS OF GROUPS AND CLUSTERS OF GALAXIES [J].

DAVID, LP ;

JONES, C ;

FORMAN, W .

ASTROPHYSICAL JOURNAL, 1995, 445 (02) :578-590

[10] A STUDY OF (ALPHA,N) REACTIONS ON 9BE AND 13C AT LOW ENERGIES [J].

DAVIDS, CN .

NUCLEAR PHYSICS A, 1968, A110 (03) :619-&

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