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Title: Nuclear diagnostic for fast alpha particles

Abstract

Measurement of the velocity distribution of confined energetic alpha particles resulting from deuterium-tritium fusion reactions in a magnetically contained plasma is provided. The fusion plasma is seeded with energetic boron neutrals for producing, by means of the reaction .sup.10 B (.alpha.,n) .sup.13 N reaction, radioactive nitrogen nuclei which are then collected by a probe. The radioactivity of the probe is then measured by conventional techniques in determining the energy distribution of the alpha particles in the plasma. In a preferred embodiment, diborane gas (B.sub.2 H.sub.6) is the source of the boron neutrals to produce .sup.13 N which decays almost exclusively by positron emission with a convenient half-life of 10 minutes.

Inventors:
; ;
Issue Date:
Research Org.:
US Department of Energy (USDOE), Washington DC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176554
Patent Number(s):
H000075
Assignee:
United States Of America, Department Of Energy
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Grisham, Larry R., Post Jr., Douglass E., and Dawson, John M. Nuclear diagnostic for fast alpha particles. United States: N. p., 1986. Web.
Grisham, Larry R., Post Jr., Douglass E., & Dawson, John M. Nuclear diagnostic for fast alpha particles. United States.
Grisham, Larry R., Post Jr., Douglass E., and Dawson, John M. Tue . "Nuclear diagnostic for fast alpha particles". United States. https://www.osti.gov/servlets/purl/1176554.
@article{osti_1176554,
title = {Nuclear diagnostic for fast alpha particles},
author = {Grisham, Larry R. and Post Jr., Douglass E. and Dawson, John M.},
abstractNote = {Measurement of the velocity distribution of confined energetic alpha particles resulting from deuterium-tritium fusion reactions in a magnetically contained plasma is provided. The fusion plasma is seeded with energetic boron neutrals for producing, by means of the reaction .sup.10 B (.alpha.,n) .sup.13 N reaction, radioactive nitrogen nuclei which are then collected by a probe. The radioactivity of the probe is then measured by conventional techniques in determining the energy distribution of the alpha particles in the plasma. In a preferred embodiment, diborane gas (B.sub.2 H.sub.6) is the source of the boron neutrals to produce .sup.13 N which decays almost exclusively by positron emission with a convenient half-life of 10 minutes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {6}
}

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