Interpretation of neutron time-of-flight signals from current-mode detectors

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Neutron time-of-flight (nToF) signals from current-mode neutron detectors are often used to determine burn-averaged ion temperature from ICF targets because the spread of the neutron energy distribution is a function of the temperature of the reacting ions. The measured signal will, however, be a convolution of the actual neutron signal, the detector response, and the response of the recording system. In addition, scattered neutrons will arrive at the detector later than unscattered neutrons, further broadening the signal. The ion temperature derived from nToF data depends strongly on the functions used to fit the data or the methods utilized to unfold ... continued below

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17 p.

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Murphy, T.J.; Chrien, R.E. & Klare, K.A. June 1, 1996.

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Description

Neutron time-of-flight (nToF) signals from current-mode neutron detectors are often used to determine burn-averaged ion temperature from ICF targets because the spread of the neutron energy distribution is a function of the temperature of the reacting ions. The measured signal will, however, be a convolution of the actual neutron signal, the detector response, and the response of the recording system. In addition, scattered neutrons will arrive at the detector later than unscattered neutrons, further broadening the signal. The ion temperature derived from nToF data depends strongly on the functions used to fit the data or the methods utilized to unfold the neutron energy spectrum. A functional form based on known and measured properties of the detectors is used to fit the integral of the time-of-flight signal, allowing ion temperature derivations from targets with lower neutron yield than previously possible.

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17 p.

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INIS; OSTI as DE96011283

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  • 11. high temperature plasma diagnostic conference, Monterey, CA (United States), 13-17 Jun 1996

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  • Other: DE96011283
  • Report No.: LA-UR--96-1647
  • Report No.: CONF-9606208--7
  • Grant Number: W-7405-ENG-36;W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 244642
  • Archival Resource Key: ark:/67531/metadc668088

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • June 1, 1996

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  • June 29, 2015, 9:42 p.m.

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  • July 29, 2016, 12:04 p.m.

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Murphy, T.J.; Chrien, R.E. & Klare, K.A. Interpretation of neutron time-of-flight signals from current-mode detectors, article, June 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc668088/: accessed April 26, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.