Ground-state and isomeric-state cross sections for 181Ta( n,2n )180Ta between 8 and 15 MeV

Bhatia, C.; Gooden, M. E.; Tornow, W.; Tonchev, A. P.

doi:10.1103/PhysRevC.87.031601

Title: Ground-state and isomeric-state cross sections for $^{181}$ Ta( $n, 2 n$ ) $^{180}$ Ta between 8 and 15 MeV

Journal Article · Thu Mar 21 00:00:00 EDT 2013 · Physical Review C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.87.031601· OSTI ID:1224408

Bhatia, C. ^[1]; Gooden, M. E. ^[2]; Tornow, W. ^[1]; Tonchev, A. P. ^[3]

Duke Univ., Durham, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
Triangle Univ. Nuclear Lab., Durham, NC (United States); North Carolina State Univ., Raleigh, NC (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Using the activation technique, the cross section for the reaction ¹⁸¹Ta(n,2n)^180gTa was measured from 8 to 15 MeV in small energy steps to resolve inconsistencies in the existing database. The 93.4 keV γ ray from the decay of the ^180gTa ground state was recorded with a high-purity germanium (HPGe) detector. The monitor reactions ²⁷Al(n,α)²⁴Na and ¹⁹⁷Au(n,2n)¹⁹⁶Au were used for neutron fluence determination. The ENDF VII.1 and TENDL 2011 evaluations are in considerable disagreement with the present data, which in turn agree very well with the majority of the existing data in the 14 MeV energy region. Furthermore, a detailed analysis using the code TALYS was performed to describe the present data and to predict the (n,2n) cross section to the isomeric state of ¹⁸⁰Ta.

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Research Organization:: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC52-07NA27344

OSTI ID:: 1224408

Report Number(s):: LLNL-JRNL-615497; PRVCAN

Journal Information:: Physical Review C, Nuclear Physics, Vol. 87, Issue 3; ISSN 0556-2813

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

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