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Title: NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS

Abstract

Three new approaches to obtain information on the confined fast alphas in International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by {approx}140 microns per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER.

Authors:
Publication Date:
Research Org.:
GENERAL ATOMICS
Sponsoring Org.:
USDOE
OSTI Identifier:
837215
Report Number(s):
GA-A24682
TRN: US0701845
DOE Contract Number:  
FG03-92ER54150
Resource Type:
Conference
Resource Relation:
Conference: 15TH HIGH TEMPERATURE PLASMA DIAGNOSTICS CONF., SAN DIEGO, CALIFORNIA, APRIL 19-22,2004 AND TO BE PUBLISHED IN REV.SCI.INSTRUM.
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; 22 GENERAL STUDIES OF NUCLEAR REACTORS; ABLATION; CHARGE EXCHANGE; CLOUDS; ELECTRON CAPTURE; ELECTRONS; EXPERIMENTAL REACTORS; HEATING; HELIUM; KNOCK-ON; MITIGATION; NEUTRONS; NUCLEAR EMULSIONS; PLASMA DIAGNOSTICS; PROTONS

Citation Formats

FISHER,R.K. NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS. United States: N. p., 2004. Web.
FISHER,R.K. NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS. United States.
FISHER,R.K. Thu . "NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS". United States. https://www.osti.gov/servlets/purl/837215.
@article{osti_837215,
title = {NEW APPROACHES TO CONFINED ALPHA DIAGNOSTICS},
author = {FISHER,R.K},
abstractNote = {Three new approaches to obtain information on the confined fast alphas in International Thermonuclear Experimental Reactor (ITER) are proposed. The first technique measures the energetic charge exchange (CX) neutrals that result from the alpha collision-induced knock-on fuel ion tails undergoing electron capture on the MeV D neutral beams planned for heating and current drive. The second technique measures the energetic knock-on neutron tail due to alphas using the lengths of the proton recoil tracks produced by neutron collisions in nuclear emulsions. The range of the 14 to 20 MeV recoil protons increases by {approx}140 microns per MeV. The third approach would measure the CX helium neutrals resulting from confined alphas capturing two electrons in the ablation cloud surrounding a dense gas jet that has been proposed for disruption mitigation in ITER.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2004},
month = {4}
}

Conference:
Other availability
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