Measurement of the Bi209(n,4n)Bi206 and Tm169(n,3n)Tm167 cross sections between 23.5 and 30.5 MeV relevant to reaction-in-flight neutron studies at the National Ignition Facility

Gooden, M. E.; Bredeweg, T. A.; Champine, B.; Combs, D. C.; Finch, S.; Hayes-Sterbenz, A.; Henry, E.; Krishichayan, F.; Rundberg, R.; Tornow, W.; Wilhelmy, J.; Yeamans, C.

doi:10.1103/PhysRevC.96.024622

Title: Measurement of the ${}^{209}{Bi} (n, 4 n) {}^{206}{Bi}$ and ${}^{169}{Tm} (n, 3 n) {}^{167}{Tm}$ cross sections between 23.5 and 30.5 MeV relevant to reaction-in-flight neutron studies at the National Ignition Facility

Journal Article · Mon Aug 28 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.96.024622· OSTI ID:1416291

Gooden, M. E. ^[1]; Bredeweg, T. A. ^[1]; Champine, B. ^[2]; Combs, D. C. ^[3]; Finch, S. ^[4]; Hayes-Sterbenz, A. ^[1]; Henry, E. ^[5]; Krishichayan, F. ^[4]; Rundberg, R. ^[1]; Tornow, W. ^[4]; Wilhelmy, J. ^[1]; Yeamans, C. ^[5]

Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Univ. of California, Berkeley, CA (United States)
North Carolina State Univ., Raleigh, NC (United States); Triangle Universities Nuclear Lab., Durham, NC (United States)
Duke Univ., Durham, NC (United States); Triangle Universities Nuclear Lab., Durham, NC (United States)
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

At the National Ignition Facility, experiments are being performed to measure charged-particle stopping powers in the previously unexplored warm dense plasma regime. These measurements are done using reaction-in-flight (RIF) neutrons from an inertial confinement fusion system. RIF neutrons are produced with a continuum of energies up to 30 MeV. By making activation measurements utilizing threshold reactions for neutrons in the energy range of 15 < E n < 30 MeV , the number of RIF neutrons can be determined and from this the stopping power of the deuterium and tritium ions that produced the RIF neutrons can be inferred. Currently, the 169 Tm ( n , 3 n ) 167 Tm reaction has been used. However, in an effort to provide a secondary complimentary measurement, efforts are underway to make use of the 209 Bi ( n , 4 n ) 206 Bi reaction, with a threshold of 22.5 MeV. The cross sections were measured at the 10 MV tandem Van De Graaff accelerator at the Triangle Universities Nuclear Laboratory with quasimonoenergetic neutrons between 23.5 and 30.5 MeV, where few previous measurements have been made. Cross-section data are compared to calculations and other available measurements.

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Research Organization:: Los Alamos National Lab. (LANL), Los Alamos, NM (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: AC52-06NA25396; AC52-07NA27344

OSTI ID:: 1416291

Alternate ID(s):: OSTI ID: 1377098; OSTI ID: 1409948

Report Number(s):: LA-UR-17-27157; LLNL-JRNL-741346; TRN: US1800900

Journal Information:: Physical Review C, Vol. 96, Issue 2; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 7 works

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References (12)

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Title: Measurement of the Bi 209 ( n , 4 n ) Bi 206 and Tm 169 ( n , 3 n ) Tm 167 cross sections between 23.5 and 30.5 MeV relevant to reaction-in-flight neutron studies at the National Ignition Facility

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Title: Measurement of the ${}^{209}{Bi} (n, 4 n) {}^{206}{Bi}$ and ${}^{169}{Tm} (n, 3 n) {}^{167}{Tm}$ cross sections between 23.5 and 30.5 MeV relevant to reaction-in-flight neutron studies at the National Ignition Facility