Observation of the alpha particle "knock-on" neutron emission from magnetically confined DT fusion plasmas

Citation
J. Kallne et al., Observation of the alpha particle "knock-on" neutron emission from magnetically confined DT fusion plasmas, PHYS REV L, 85(6), 2000, pp. 1246-1249
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
0031-9007 → ACNP
Volume
85
Issue
6
Year of publication
2000
Pages
1246 - 1249
Database
ISI
SICI code
0031-9007(20000807)85:6<1246:OOTAP">2.0.ZU;2-H
Abstract
Suprathermal fuel ions from cr-particle knock-on collisions in fusion DT pl asmas are predicted to cause a weak feature in the neutron spectrum of d t --> alpha + n. The knock-an feature has been searched for in the neutron emission of high (>1 MW) fusion-power plasmas produced at JET and was found using a magnetic proton recoil type neutron spectrometer of high performan ce. Measurement and predictions agree both in absolute amplitude and in pla sma-parameter dependence, supporting the interpretation and model. Moreover , the results provide input to projecting ct-particle diagnostics for futur e self-heated fusion plasmas.