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

被引：95

作者：

Källne, J ^{[1
]}

Ballabio, L

Frenje, J

Conroy, S

Ericsson, G

Tardocchi, M

Traneus, E

Gorini, G

机构：

[1] Uppsala Univ, Dept Neutron Res, EURATOM, NFR Assoc, Uppsala, Sweden

[2] Univ Milan, Dept Phys, INFM, Milan, Italy

[3] CNR Assoc, ENEA, EURATOM, Inst Plasma Phys, Milan, Italy

来源：

PHYSICAL REVIEW LETTERS | 2000年 / 85卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.85.1246

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Suprathermal fuel ions from cr-particle knock-on collisions in fusion DT plasmas 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 performance. Measurement and predictions agree both in absolute amplitude and in plasma-parameter dependence, supporting the interpretation and model. Moreover, the results provide input to projecting ct-particle diagnostics for future self-heated fusion plasmas.

引用

页码：1246 / 1249

页数：4

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