Neutron elastic and inelastic cross section measurements on silicon from 0.8--8 MeV
- Univ. of Kentucky, Lexington, KY (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Univ. of Kentucky, Lexington, KY (United States)
- Univ. of Kentucky, Lexington, KY (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Georgia Institute of Technology, Atlanta, GA (United States)
- Univ. of Dallas, Irving, TX (United States)
- Univ. of Kentucky, Lexington, KY (United States); Univ. of Dallas, Irving, TX (United States)
- US Naval Academy, Annapolis, MD (United States)
Neutron elastic and inelastic scattering differential cross sections were measured at angles between 30° and 155° with incident neutron energies between 0.8 and 8 MeV. The measured differential scattering cross sections are compared to existing measurements and the ENDF/B-VIII.0, the JEFF-3.3, and the JENDL-4.0 data evaluations, as well as theoretical calculations from the TALYS-1.95 nuclear reaction code. Our results are reasonably well described by values from the ENDF/B-VIII.0 and JEFF-3.3 compilations. However, below 4 MeV, our backward-angle elastic scattering results tend to be lower than database/calculated values, suggesting that less recoil damage would occur than expected. Above 6 MeV, larger backward-angle cross sections are observed suggesting the opposite. Deexcitation γ rays produced in the inelastic scattering process were also studied for neutron energies between 1.9 and 4.5 MeV. Inelastic neutron scattering cross sections deduced from 28Si(n,n1γ) γ-ray projection cross sections confirm our 28Si(n,n1) results. To the extent that data from GELINA and our experimental results can be compared, we have excellent agreement between the inelastic neutron scattering cross sections.
- Research Organization:
- Univ. of Kentucky, Lexington, KY (United States); Univ. of Dallas, Irving, TX (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); National Science Foundation (NSF)
- Grant/Contract Number:
- NA0002931; SC0021243; SC0021424; PHY-1913028; NU-12-KY-UK-0201-05
- OSTI ID:
- 1867861
- Report Number(s):
- DOE-USNA-00056, DOE-UD-21243, and DOE-UK-DE-21424; NU-12-KY-UK-0201-05, DE-20SSC000056, DE-SC0021243, and DE-SC0021424,PHY-1913028; TRN: US2306224
- Journal Information:
- Nuclear Physics. A, Vol. 1024; ISSN 0375-9474
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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