Pulsed and monoenergetic beams for neutron cross-section measurements using activation and scattering techniques at Triangle Universities Nuclear Laboratory

A. Hutcheson, C. T. Angell, J. A. Becker, M. Boswell, A. S. Crowell, D. Dashdorj, B. Fallin, N. Fotiades, C. R. Howell, H. J. Karwowski, J. H. Kelley, M. Kiser, R. A. Macri, R. O. Nelson, R. S. Pedroni, A. P. Tonchev, W. Tornow, D. J. Vieira, G. J. Weisel, J. B. Wilhelmy

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

In support of the Stewardship Science Academic Alliances initiative, an experimental program has been developed at Triangle Universities Nuclear Laboratory (TUNL) to measure (n,xn) cross-sections with both in-beam and activation techniques with the goal of improving the partial cross-section database for the NNSA Stockpile Stewardship Program. First experimental efforts include excitation function measurements on 235,238U and 241Am using pulsed and monoenergetic neutron beams with En = 5-15 MeV. Neutron-induced partial cross-sections were measured by detecting prompt γ rays from the residual nuclei using various combinations of clover and planar HPGe detectors in the TUNL shielded neutron source area. Complimentary activation measurements using DC neutron beams have also been performed in open geometry in our second target area. The neutron-induced activities were measured in the TUNL low-background counting area. In this presentation, we include detailed information about the irradiation procedures and facilities and preliminary data on first measurements using this capability.

Original languageEnglish (US)
Pages (from-to)369-372
Number of pages4
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume261
Issue number1-2 SPEC. ISS.
DOIs
StatePublished - Aug 1 2007

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics
  • Instrumentation

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