Ion temperature measurement of tokamak plasmas by collective Thomson scattering of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msub><mrow><mi mathvariant="normal">D</mi></mrow><mrow><mn>2</mn></mrow></msub></mrow></math></span>O laser radiation

R. Behn; D. Dicken; J. Hackmann; S. A. Salito; M. R. Siegrist; P. A. Krug; I. Kjelberg; B. Duval; B. Joye; A. Pochelon

doi:10.1103/PhysRevLett.62.2833

Ion temperature measurement of tokamak plasmas by collective Thomson scattering of $D_{2}$ O laser radiation

R. Behn, D. Dicken, J. Hackmann, S. A. Salito, M. R. Siegrist, P. A. Krug, I. Kjelberg, B. Duval, B. Joye, and A. Pochelon

Phys. Rev. Lett. 62, 2833 – Published 12 June 1989

Abstract

A $D_{2}$ O far-infrared laser emitting 0.5J in 1.4 μs at 385 μm and a heterodyne receiver system comprising a Schottky barrier diode mixer with a noise temperature of 8000° K (double sideband) were used in a Thomson scattering experiment to measure the ion temperature of a tokamak plasma during a single laser shot. Series of measurements under reproducible plasma conditions have been carried out in hydrogen, deuterium, and helium plasmas. Their statistical analysis yielded a typical relative error of 25% for a single shot measurement.

Received 7 October 1988

DOI:https://doi.org/10.1103/PhysRevLett.62.2833

Authors & Affiliations

R. Behn, D. Dicken, J. Hackmann, S. A. Salito, M. R. Siegrist, P. A. Krug, I. Kjelberg, B. Duval, B. Joye, and A. Pochelon

Centre de Recherches en Physique des Plasmas, Association Euratom-Confédération Suisse, Ecole Polytechnique Fédérale de Lausanne, 21, Av. des Bains, 1007 Lausanne, Switzerland