Thermal neutron capture cross sections of the palladium isotopes

Journal Article · Thu May 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.054615· OSTI ID:21190002

Krticka, M ^[1]; Firestone, R B ^[2]; McNabb, D P; Sleaford, B; Agvaanluvsan, U ^[3]; Belgya, T; Revay, Z S ^[4]

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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)

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.

• OSTI ID: 21190002
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 5 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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