Plasma and Fusion Research

Volume 8, 2403064 (2013)

Regular Articles

A Verification Scenario of Knock-on Tail Formation due to Nuclear Plus Interference Scattering in ³He-Containing Deuterium Plasmas

Hideaki MATSUURA, Kei IWAMURA and Yasuyuki NAKAO

: Department of Applied Quantum Physics and Nuclear Engineering, Kyushu University, 744 Motooka, Fukuoka 819-0395, Japan

(Received 20 November 2012 / Accepted 4 April 2013 / Published 22 May 2013)

Abstract

A scenario to verify the knock-on tail formation in deuteron distribution function by nuclear plus interference (NI) scattering and validate the Boltzmann-Fokker-Planck (BFP) model is proposed. Deuterium plasma with ³He-beam injection is considered and on the basis of the BFP model, knock-on tail formation in deuteron distribution function by energetic protons and the resulting modification of the neutron emission spectrum are examined. A recognizable change in the energetic-neutron emission rate due to the knock-on tail formation is presented. The noise neutrons for the measurement arising from the T(d,n)⁴He reaction is also evaluated by continuous-energy Monte Carlo transport simulation. The influence of the noise (slowing-down) neutrons on the measurement is discussed.

Keywords

nuclear plus interference scattering, fast-ion velocity distribution function, neutron emission spectrum, ³He-beam injection, Boltzmann-Fokker-Planck equation

DOI: 10.1585/pfr.8.2403064

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This paper may be cited as follows:

Hideaki MATSUURA, Kei IWAMURA and Yasuyuki NAKAO, Plasma Fusion Res. 8, 2403064 (2013).