TY - JOUR
T1 - Plasma polarization spectroscopy of atomic and molecular emissions from magnetically confined plasmas
AU - Shikama, T.
AU - Fujii, K.
AU - Kado, S.
AU - Zushi, H.
AU - Sakamoto, M.
AU - Iwamae, A.
AU - Goto, M.
AU - Morita, S.
AU - Hasuo, M.
PY - 2011/5
Y1 - 2011/5
N2 - In spectroscopic measurements of magnetically confined torus plasmas, the line-integrated emission along a viewing chord is usually observed. However, by utilizing the dependence of the magnitude of the Zeeman splitting on the emission location, a few localized emissions existing along the viewing chord can be separated. A detailed analysis of the Zeeman split spectral lineshapes then makes it possible to evaluate the local values of the magnetic field strength, population density, temperature, and flow velocity. We have introduced polarization spectroscopy to improve the accuracy in separating the overlapped spectra. The polarization resolved Hα, He I, and H2 Fulcher-α band spectra are measured in the TRIAM-1M tokamak, and the atomic and molecular dynamics are investigated. Further progress in the simultaneous measurements of the Balmer series and Fulcher-α band spectra in LHD, and extension to the CH Gerö band spectra, are briefly presented.
AB - In spectroscopic measurements of magnetically confined torus plasmas, the line-integrated emission along a viewing chord is usually observed. However, by utilizing the dependence of the magnitude of the Zeeman splitting on the emission location, a few localized emissions existing along the viewing chord can be separated. A detailed analysis of the Zeeman split spectral lineshapes then makes it possible to evaluate the local values of the magnetic field strength, population density, temperature, and flow velocity. We have introduced polarization spectroscopy to improve the accuracy in separating the overlapped spectra. The polarization resolved Hα, He I, and H2 Fulcher-α band spectra are measured in the TRIAM-1M tokamak, and the atomic and molecular dynamics are investigated. Further progress in the simultaneous measurements of the Balmer series and Fulcher-α band spectra in LHD, and extension to the CH Gerö band spectra, are briefly presented.
UR - http://www.scopus.com/inward/record.url?scp=80051532217&partnerID=8YFLogxK
U2 - 10.1139/p10-118
DO - 10.1139/p10-118
M3 - Review article
AN - SCOPUS:80051532217
SN - 0008-4204
VL - 89
SP - 495
EP - 501
JO - Canadian Journal of Physics
JF - Canadian Journal of Physics
IS - 5
ER -