Polarization of emission lines from beryllium-like oxygen ov: analysis based on the population-alignment collisional-radiative model.

Iwamae, A. ; Tanaka, A.

Technical Information Center Oak Ridge Tennessee

关键词: Oxygen ions;    Polarization;    Emission spectra;    Data analysis;    Collisional plasma;   

RP-ID  :  DE2001786902

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

Longitudinal alignment of OV triplet lines for the (2s3s (3)S1-2s3p (3)P0,1,2) transitions is studied on the basis of a population-alignmentc oolisional-radiative (PACR) model, which correlates quantitatively the observed polarization of emission lines from ions and atoms in a plasma with an anisotropy in the electron velocity distribution. The results are compared with measurements on the WT-3 tokamak at Kyoto University. The measured negative values of the longitudinal alignment are qualitatively explained from the anisotropic velocity distributions thathave higher speed in the poloidal direction than that in the toroidal direction.