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

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

Abstract

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.

Authors:
 [1];  [2];  [1];  [3]
  1. Duke Univ., Durham, NC (United States); Triangle Univ. Nuclear Lab., Durham, NC (United States)
  2. Triangle Univ. Nuclear Lab., Durham, NC (United States); North Carolina State Univ., Raleigh, NC (United States)
  3. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1224408
Report Number(s):
LLNL-JRNL-615497
Journal ID: ISSN 0556-2813; PRVCAN
DOE Contract Number:  
AC52-07NA27344
Resource Type:
Journal Article
Journal Name:
Physical Review C, Nuclear Physics
Additional Journal Information:
Journal Volume: 87; Journal Issue: 3; Journal ID: ISSN 0556-2813
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS

Citation Formats

Bhatia, C., Gooden, M. E., Tornow, W., and Tonchev, A. P. Ground-state and isomeric-state cross sections for 181Ta( n,2n )180Ta between 8 and 15 MeV. United States: N. p., 2013. Web. doi:10.1103/PhysRevC.87.031601.
Bhatia, C., Gooden, M. E., Tornow, W., & Tonchev, A. P. Ground-state and isomeric-state cross sections for 181Ta( n,2n )180Ta between 8 and 15 MeV. United States. https://doi.org/10.1103/PhysRevC.87.031601
Bhatia, C., Gooden, M. E., Tornow, W., and Tonchev, A. P. 2013. "Ground-state and isomeric-state cross sections for 181Ta( n,2n )180Ta between 8 and 15 MeV". United States. https://doi.org/10.1103/PhysRevC.87.031601. https://www.osti.gov/servlets/purl/1224408.
@article{osti_1224408,
title = {Ground-state and isomeric-state cross sections for 181Ta( n,2n )180Ta between 8 and 15 MeV},
author = {Bhatia, C. and Gooden, M. E. and Tornow, W. and Tonchev, A. P.},
abstractNote = {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.},
doi = {10.1103/PhysRevC.87.031601},
url = {https://www.osti.gov/biblio/1224408}, journal = {Physical Review C, Nuclear Physics},
issn = {0556-2813},
number = 3,
volume = 87,
place = {United States},
year = {2013},
month = {3}
}

Works referenced in this record:

Pre-equilibrium reactions on the stable tungsten isotopes at low energy
journal, January 2006


New isomers of scandium-50 and indium-120; γ-rays in lutecium-178 decay
journal, May 1960


Absolute Measurement of ( n ,   2 n ) Cross Sections at 14.1 Mev
journal, July 1958


Activation cross sections for reactions induced by 14 MeV neutrons on natural tantalum
journal, May 2009


The (n,2n) cross sections of 85 Rb, 107 Ag and 181 Ta at 14.6 MeV
journal, June 1979


Ge(Li) measurement of some neutron activation cross-sections at (14.2±0.2) MeV
journal, December 1978


Inelastic Scattering of 14MeV Neutrons by Heavy Nuclei
journal, December 1974


Untersuchung von (n, 2n) anregungsfunktionen
journal, July 1968


Neutron Emission Probabilities from the Interaction of 14-Mev Neutrons with Be, Ta, and Bi
journal, August 1957


ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data
journal, December 2011


Measurement of (n, p) cross-sections for shortlived products by 13.4–14.9 MeV neutrons
journal, January 1998


Accurate Determination of ( n ,2 n ) Cross Sections for Heavy Nuclei from Neutron Production Spectra
journal, December 1990


Neutron cross-section data evaluation for 181Ta up to 150MeV
journal, August 2006


Improved microscopic nuclear level densities within the Hartree-Fock-Bogoliubov plus combinatorial method
journal, December 2008