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 10B ($$\alpha$$n) 13N 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 (B2H6) is the source of the boron neutrals to produce 13N which decays almost exclusively by positron emission with a convenient half-life of 10 minutes.
- Inventors:
-
- Pacific Palisades, CA
- Issue Date:
- Research Org.:
- Princeton Plasma Physics Laboratory (PPPL), Princeton, NJ (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 875249
- Patent Number(s):
- H000075
- Application Number:
- 06/814588
- Assignee:
- United States of America as respresented by United States (Washington, DC)
- DOE Contract Number:
- AC02-76CH03073
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 1985 Dec 30
- Country of Publication:
- United States
- Language:
- English
- Subject:
- statutory invention registration; nuclear; diagnostic; fast; alpha; particles; measurement; velocity; distribution; confined; energetic; resulting; deuterium-tritium; fusion; reactions; magnetically; contained; plasma; provided; seeded; boron; neutrals; producing; means; reaction; 10; 13; radioactive; nitrogen; nuclei; collected; probe; radioactivity; measured; conventional; techniques; determining; energy; preferred; embodiment; diborane; gas; source; produce; decays; exclusively; positron; emission; convenient; half-life; minutes; preferred embodiment; energy distribution; positron emission; alpha particle; alpha particles; conventional techniques; fusion reaction; velocity distribution; energetic alpha; fusion reactions; fusion plasma; contained plasma; /376/
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. Wed .
"Nuclear diagnostic for fast alpha particles". United States. https://www.osti.gov/servlets/purl/875249.
@article{osti_875249,
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 10B ($\alpha$n) 13N 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 (B2H6) is the source of the boron neutrals to produce 13N 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 = {1}
}
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