FIER: Software for analytical modeling of delayed gamma-ray spectra

被引：8

作者：

Matthews, E. F. ^{[1
]}

Goldblum, B. L. ^{[1
]}

Bernstein, L. A. ^{[1
,2
]}

Quiter, B. J. ^{[2
]}

Brown, J. A. ^{[1
]}

Younes, W. ^{[3
]}

Burke, J. T. ^{[3
]}

Padgett, S. W. ^{[3
]}

Ressler, J. J. ^{[3
]}

Tonchev, A. P. ^{[3
]}

机构：

[1] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA

[2] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA

[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2018年 / 891卷

关键词：

Delayed gamma rays; Radiation simulation; Nuclear data; Fission products; Nuclear forensics; EQUATIONS;

D O I：

10.1016/j.nima.2018.02.072

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A new software package, the Fission Induced Electromagnetic Response (FIER) code, has been developed to analytically predict delayed gamma-ray spectra following fission. FIER uses evaluated nuclear data and solutions to the Bateman equations to calculate the time-dependent populations of fission products and their decay daughters resulting from irradiation of a fissionable isotope. These populations are then used in the calculation of gamma-ray emission rates to obtain the corresponding delayed gamma-ray spectra. FIER output was compared to experimental data obtained by irradiation of a U-235 sample in the Godiva critical assembly. This investigation illuminated discrepancies in the input nuclear data libraries, showcasing the usefulness of FIER as a tool to address nuclear data deficiencies through comparison with experimental data. FIER provides traceability between gamma-ray emissions and their contributing nuclear species, decay chains, and parent fission fragments, yielding a new capability for the nuclear science community.

引用

页码：111 / 117

页数：7

共 15 条

[1]

Bateman H, 1910, P CAMB PHILOS SOC, V15, P423

[2]

Benedict M., 1981, Nuclear Chemical Engineering

[3]

Bernstein Lee, 2015, LLNLCONF676585

[4]

Bhat M.R., 1992, Evaluated Nuclear Structure Data File (ENSDF). Ed. by, P817

[5] General solution of Bateman equations for nuclear transmutations [J].

Cetnar, J .

ANNALS OF NUCLEAR ENERGY, 2006, 33 (07) :640-645

[6] Novel methodology for the quantitative assay of fissile materials using temporal and spectral β-delayed γ-ray signatures [J].

Chivers, D. H. ;

Alfonso, K. ;

Goldblum, B. L. ;

Ludewigt, B. .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, 2011, 269 (16) :1829-1835

[7]

England T.R., 1994, LAUR943106 LOS AL NA

[8] Comparison of Geant4 and MCNP6 for use in delayed fission radiation simulation [J].

Hecht, A. A. ;

Blakeley, R. E. ;

Martin, W. J. ;

Leonard, E. .

ANNALS OF NUCLEAR ENERGY, 2014, 69 :134-138

[9]

Herman M., 2010, Tech. Rep BNL-90365-2009

[10]

Hermann O. W., 1998, NUREGCR0200 OAK RIDG

← 1 2 →