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- [1] R-matrix Analysis for the 8Be System and Features in the p+7Li Reaction Over Resonance RegionCNR*15 - 5TH INTERNATIONAL WORKSHOP ON COMPOUND-NUCLEAR REACTIONS AND RELATED TOPICS, 2016, 122Kunieda, Satoshi
Verification of R-matrix calculations for charged-particle reactions in the resolved resonance region for the 7Be system
被引：16
|作者：
Thompson, Ian J.
[1
]
deBoer, R. J.
[2
,3
]
Dimitriou, P.
[4
]
Kunieda, S.
[5
]
Pigni, M. T.
[6
]
Arbanas, G.
[6
]
Leeb, H.
[7
]
Srdinko, Th.
[7
]
Hale, G.
[8
]
Tamagno, P.
[9
]
Archier, P.
[9
]
机构：
[1] Lawrence Livermore Natl Lab, L-414, Livermore, CA 94551 USA
[2] Univ Notre Dame, Joint Inst Nucl Astrophys, Notre Dame, IN 46556 USA
[3] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA
[4] IAEA, Div Phys & Chem Sci, Wagramerstr 5, A-1400 Vienna, Austria
[5] Japan Atom Energy Agcy, Tokai, Ibaraki 3191195, Japan
[6] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA
[7] Tech Univ Wien, Atominst, Wiedner Hauptstr 8-10, A-1040 Vienna, Austria
[8] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM 87545 USA
[9] CEA DEN Cadarache, DER, SPRC, LEPh, F-13108 St Paul Les Durance, France
基金：
美国国家科学基金会;
关键词：
CROSS-SECTIONS;
COVARIANCE-MATRIX;
SCATTERING;
COMPILATION;
UPDATE;
RANGE;
HE-3;
D O I：
10.1140/epja/i2019-12753-y
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：
.R-matrix theory is used to describe nuclear reactions in the resolved resonance region. It uses information on bound states and low energy resonances to accurately parametrize cross sections on the resonances as well as the non-resonant background. Since the seminal work of Lane and Thomas (1958), the approach has been widely used to analyze experimental cross-section data in a broad range of fields spanning nuclear reaction dynamics, nuclear astrophysics, ion beam analysis and their applications. Different R-matrix codes have been developed and used in these different applications with very little communication among the developers or practitioners on the capabilities, achievements or limitations of the codes. A limited comparison among three R-matrix codes on neutron-induced reactions was performed by the International Atomic Energy Agency (IAEA) International Evaluation of Neutron Cross Section Standards project (2007). Since then, significant progress has been made in their implementation of the R-matrix algorithms, and R-matrix codes have enhanced capabilities. In this paper we present, for the first time, the results of a comprehensive effort to verify the most widely used R-matrix codes in the various fields of nuclear science and applications: AMUR, AZURE2, CONRAD, EDA, FRESCO, GECCCOS, and SAMMY. In addition to the description of the capabilities of the codes and their specifications, we discuss the results of a joint exercise which was coordinated by the International Atomic Energy Agency. The aim of the exercise was to compare calculations of charged-particle reaction cross sections for the light composite system Be-7. The calculations were performed by the codes using identical input R-matrix parameters and other specifications and were limited to charged-particle channels.
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页数：16
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