Calibration of a direct nuclear activation diagnostic which uses boron nitride to measure energetic deuterium ions

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A direct nuclear activation diagnostic for the measurement of the kinetic energy of deuterium ions in the energy range of 1 to 3 MeV has been successfully developed. This diagnostic is based on the fact that the ratio of two different thick target yields which are generated by the same incident ion species can be a sensitive function of incident ion energy. Targets for this diagnostic are made of {alpha}-boron nitride (BN) and use the two reactions: {sup 10}B(d,n){sup 11}C({beta}+) and {sup 14}N(d,n){sup 15}O({beta}+). As long as the BN material matrix remains constant, the ratio of thick target yields depends ... continued below

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18 p.

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Cooper, G. W.; Chambers, G. D.; Savage, M. E.; Ruiz, C. L. & Schmidlapp, F. A. July 1998.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Labs., Albuquerque, NM (United States)
    Place of Publication: Albuquerque, New Mexico

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Description

A direct nuclear activation diagnostic for the measurement of the kinetic energy of deuterium ions in the energy range of 1 to 3 MeV has been successfully developed. This diagnostic is based on the fact that the ratio of two different thick target yields which are generated by the same incident ion species can be a sensitive function of incident ion energy. Targets for this diagnostic are made of {alpha}-boron nitride (BN) and use the two reactions: {sup 10}B(d,n){sup 11}C({beta}+) and {sup 14}N(d,n){sup 15}O({beta}+). As long as the BN material matrix remains constant, the ratio of thick target yields depends only on the deuterium ion energy and is independent of ion fluence and detector efficiency. Calibration of the diagnostic was accomplished by irradiating BN targets with deuterium beams of known ion kinetic energy and fluence. The calibrated diagnostic was then fielded to measure the voltage in a Plasma Opening Switch (POS). Electrical measurements of the POS voltage and the voltage inferred from the BN nuclear activation diagnostic were in good agreement.

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18 p.

Notes

OSTI as DE98003541

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  • 12. topical conference on high-temperature plasma diagnostics, Princeton, NJ (United States), 7-11 Jun 1998

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  • Other: DE98003541
  • Report No.: SAND--98-0660C
  • Report No.: CONF-980605--
  • Grant Number: AC04-94AL85000
  • Office of Scientific & Technical Information Report Number: 663216
  • Archival Resource Key: ark:/67531/metadc701882

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  • July 1998

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  • Sept. 12, 2015, 6:31 a.m.

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  • April 14, 2016, 3:19 p.m.

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Cooper, G. W.; Chambers, G. D.; Savage, M. E.; Ruiz, C. L. & Schmidlapp, F. A. Calibration of a direct nuclear activation diagnostic which uses boron nitride to measure energetic deuterium ions, article, July 1998; Albuquerque, New Mexico. (digital.library.unt.edu/ark:/67531/metadc701882/: accessed August 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.