skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Thermal neutron capture cross sections of the palladium isotopes

Abstract

Precise thermal neutron capture {gamma}-ray cross sections {sigma}{sub {gamma}} were measured for all elements with Z=1-83,90, and 92, for He and Pm, at the Budapest Reactor. These data were evaluated with additional information from the literature to generate the Evaluated Gamma-ray Activation File (EGAF). Isotopic radiative neutron cross sections can be deduced from the total transition cross section feeding the ground state, {sigma}{sub 0}={sigma}{sigma}{sub {gamma}}(GS) if the decay scheme is complete. The EGAF file contains partial {gamma}-ray cross sections for all stable palladium isotopes. None of these decay schemes are complete, although in each case transitions de-exciting low-lying levels are known. We have performed Monte Carlo simulations of the palladium thermal neutron capture decay schemes using the computer code DICEBOX. The simulated populations of low low-lying levels are normalized to the measured {sigma}{sub {gamma}} values from EGAF and the total radiative neutron cross section {sigma}{sub 0} is obtained. The {sigma}{sub 0} values derived for the palladium isotopes agree well with previous measurements and were in several cases more precise. Complementary use of {gamma}-ray cross-section data and Monte Carlo calculations has proven effective in determining both the palladium total radiative cross sections and new nuclear structure information.

Authors:
 [1];  [2]; ; ;  [3]; ;  [4]
  1. Charles University in Prague, Faculty of Mathematics and Physics, V Holesovickach 2, CZ-180 00 Prague 8 (Czech Republic)
  2. Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States)
  3. Lawrence Livermore National Laboratory, L-414, 7000 East Avenue, Livermore, CA 94551 (United States)
  4. Institute of Isotope and Surface Chemistry, H-1525, Budapest (Hungary)
Publication Date:
OSTI Identifier:
21190002
Resource Type:
Journal Article
Journal Name:
Physical Review. C, Nuclear Physics
Additional Journal Information:
Journal Volume: 77; Journal Issue: 5; Other Information: DOI: 10.1103/PhysRevC.77.054615; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0556-2813
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CAPTURE; COMPUTERIZED SIMULATION; CROSS SECTIONS; DECAY; GAMMA RADIATION; GROUND STATES; MONTE CARLO METHOD; NUCLEAR STRUCTURE; PALLADIUM; PALLADIUM ISOTOPES; THERMAL NEUTRONS

Citation Formats

Krticka, M, North Carolina State University, Raleigh, NC 27695, Firestone, R B, McNabb, D P, Sleaford, B, Agvaanluvsan, U, Belgya, T, and Revay, Z S. Thermal neutron capture cross sections of the palladium isotopes. United States: N. p., 2008. Web. doi:10.1103/PHYSREVC.77.054615.
Krticka, M, North Carolina State University, Raleigh, NC 27695, Firestone, R B, McNabb, D P, Sleaford, B, Agvaanluvsan, U, Belgya, T, & Revay, Z S. Thermal neutron capture cross sections of the palladium isotopes. United States. doi:10.1103/PHYSREVC.77.054615.
Krticka, M, North Carolina State University, Raleigh, NC 27695, Firestone, R B, McNabb, D P, Sleaford, B, Agvaanluvsan, U, Belgya, T, and Revay, Z S. Thu . "Thermal neutron capture cross sections of the palladium isotopes". United States. doi:10.1103/PHYSREVC.77.054615.
@article{osti_21190002,
title = {Thermal neutron capture cross sections of the palladium isotopes},
author = {Krticka, M and North Carolina State University, Raleigh, NC 27695 and Firestone, R B and McNabb, D P and Sleaford, B and Agvaanluvsan, U and Belgya, T and Revay, Z S},
abstractNote = {Precise thermal neutron capture {gamma}-ray cross sections {sigma}{sub {gamma}} were measured for all elements with Z=1-83,90, and 92, for He and Pm, at the Budapest Reactor. These data were evaluated with additional information from the literature to generate the Evaluated Gamma-ray Activation File (EGAF). Isotopic radiative neutron cross sections can be deduced from the total transition cross section feeding the ground state, {sigma}{sub 0}={sigma}{sigma}{sub {gamma}}(GS) if the decay scheme is complete. The EGAF file contains partial {gamma}-ray cross sections for all stable palladium isotopes. None of these decay schemes are complete, although in each case transitions de-exciting low-lying levels are known. We have performed Monte Carlo simulations of the palladium thermal neutron capture decay schemes using the computer code DICEBOX. The simulated populations of low low-lying levels are normalized to the measured {sigma}{sub {gamma}} values from EGAF and the total radiative neutron cross section {sigma}{sub 0} is obtained. The {sigma}{sub 0} values derived for the palladium isotopes agree well with previous measurements and were in several cases more precise. Complementary use of {gamma}-ray cross-section data and Monte Carlo calculations has proven effective in determining both the palladium total radiative cross sections and new nuclear structure information.},
doi = {10.1103/PHYSREVC.77.054615},
journal = {Physical Review. C, Nuclear Physics},
issn = {0556-2813},
number = 5,
volume = 77,
place = {United States},
year = {2008},
month = {5}
}