Isomeric cross section of the {sup 197}Au(n,2n) reaction
- Department of Physics, National Technical University of Athens, Athens (Greece)
- Institute of Nuclear Physics, National Centre of Scientific Research (NCSR) 'Demokritos', Athens (Greece)
In the present work, the {sup 197}Au(n,2n) reaction cross section is experimentally determined relative to the {sup 27}Al(n,{alpha}){sup 24}Na reaction at incident neutron energies of 9.0-10.5 MeV by means of the activation technique. The quasimonoenergetic fast neutron beam was produced via the {sup 2}H(d,n){sup 3}He reaction at the 5.5-MV Tandem Van de Graaff accelerator at the National Centre of Scientific Research (NCSR) ''Demokritos'' and was studied to determine the contribution of background 'parasitic' neutrons using the multiple foil activation technique and the SULSA unfolding code. The cross sections for the population of the second isomeric state (12{sup -}) of {sup 196}Au and the sum of the ground (2{sup -}) and first isomeric state (5{sup -}) population cross sections were independently determined. Auxiliary Monte Carlo simulations were performed with the MCNP code. Theoretical calculations of the above cross sections in the 8-25 MeV region were carried out with the use of the STAPRE-F, EMPIRE, and TALYS codes, which were also compared in their implementation of the generalized superfluid model. The theoretical results are compared with previous work in the same mass region, and the strong dependence on the level scheme of the nuclei involved was revealed.
- OSTI ID:
- 21499426
- Journal Information:
- Physical Review. C, Nuclear Physics, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevC.83.024609; (c) 2011 American Institute of Physics; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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ALUMINIUM 27 TARGET
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ENERGY LEVELS
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GOLD 197 TARGET
HELIUM 3
MASS
MEV RANGE 01-10
MONTE CARLO METHOD
NCSR
NEUTRON EMISSION
NEUTRON REACTIONS
SODIUM 24
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VAN DE GRAAFF ACCELERATORS
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CALCULATION METHODS
DAYS LIVING RADIOISOTOPES
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ELECTRON CAPTURE RADIOISOTOPES
ELECTROSTATIC ACCELERATORS
ELEMENTARY PARTICLES
EMISSION
ENERGY RANGE
EVEN-ODD NUCLEI
FERMIONS
GOLD ISOTOPES
HADRON REACTIONS
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HEAVY NUCLEI
HELIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
HYDROGEN ISOTOPES
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LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MILLISECONDS LIVING RADIOISOTOPES
NATIONAL ORGANIZATIONS
NEUTRONS
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
NUCLEONS
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UNITED KINGDOM ORGANIZATIONS