Exploring Prompt Measurement Methods for (n,2n) Cross Sections on Radioactive Targets

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This report summarizes a study of possible neutron detection technologies for performing prompt (n,2n) measurements on radioactive targets of the type that could be made at the Rare Isotope Accelerator (RIA). The report recommends conducting further research on high-pressure {sup 3}He gas scintillators as it is the best candidate technology. These detectors meet the requirements of a fast response time (fall times around 5-10 ns), gamma ray suppression, (all gamma rays below about 900 keV can be easily discriminated against), and can be easily configured into a 4{pi} array. The one requirement that these detectors fall short is efficiency, but ... continued below

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PDF-file: 13 pages; size: 0 Kbytes

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Ahle, L. January 5, 2006.

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Description

This report summarizes a study of possible neutron detection technologies for performing prompt (n,2n) measurements on radioactive targets of the type that could be made at the Rare Isotope Accelerator (RIA). The report recommends conducting further research on high-pressure {sup 3}He gas scintillators as it is the best candidate technology. These detectors meet the requirements of a fast response time (fall times around 5-10 ns), gamma ray suppression, (all gamma rays below about 900 keV can be easily discriminated against), and can be easily configured into a 4{pi} array. The one requirement that these detectors fall short is efficiency, but less than a factor of 10 improvement is needed. The possibility of pulse shape discrimination should also be explored for these detectors as this would help to distinguish gamma rays above 900 keV from neutrons. In addition to R&D work on these detectors, Monte Carlo simulations and target development are also recommended areas of further study.

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PDF-file: 13 pages; size: 0 Kbytes

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  • Report No.: UCRL-TR-218021
  • Grant Number: W-7405-ENG-48
  • DOI: 10.2172/895087 | External Link
  • Office of Scientific & Technical Information Report Number: 895087
  • Archival Resource Key: ark:/67531/metadc887182

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Office of Scientific & Technical Information Technical Reports

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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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Creation Date

  • January 5, 2006

Added to The UNT Digital Library

  • Sept. 22, 2016, 2:13 a.m.

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  • Nov. 28, 2016, 2:33 p.m.

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Ahle, L. Exploring Prompt Measurement Methods for (n,2n) Cross Sections on Radioactive Targets, report, January 5, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc887182/: accessed November 22, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.