TY - JOUR
T1 - The effect of inner-shell ionization on intensities of lines from Mg I-like ions in Tokamak plasmas
AU - Finkenthal, M.
AU - Stratton, B. C.
AU - Moos, H. W.
AU - Bar Shalom, A.
AU - Klapisch, M.
PY - 1985/3/18
Y1 - 1985/3/18
N2 - Tokamak spectra of the Mg I-like ions of high-Z elements (Z = 21-24), have consistently shown that the 3s21S0-3s3p3P1 intercombination line is brighter than expected relative to the 3s21S0-3s3p3P1 resonance line. The 3s3p3P2-3s3d3D3 transition is also found to be anomalously strong. The results of modeling measured relative intensities of Mg I-like selenium (Se XXIII) lines from Princeton large torus (PLT) tokamak spectra are presented. The observations cannot be explained by a level population model including only electron collisions and radiative decay between the levels of the Mg I-like ion. Agreement with the data is found when direct population of the 3s3p levels by inner-shell ionization of the Al I-like ion is included; indicating that these processes are important for Mg I-like ions at the temperatures and densities of tokamak plasmas.
AB - Tokamak spectra of the Mg I-like ions of high-Z elements (Z = 21-24), have consistently shown that the 3s21S0-3s3p3P1 intercombination line is brighter than expected relative to the 3s21S0-3s3p3P1 resonance line. The 3s3p3P2-3s3d3D3 transition is also found to be anomalously strong. The results of modeling measured relative intensities of Mg I-like selenium (Se XXIII) lines from Princeton large torus (PLT) tokamak spectra are presented. The observations cannot be explained by a level population model including only electron collisions and radiative decay between the levels of the Mg I-like ion. Agreement with the data is found when direct population of the 3s3p levels by inner-shell ionization of the Al I-like ion is included; indicating that these processes are important for Mg I-like ions at the temperatures and densities of tokamak plasmas.
UR - http://www.scopus.com/inward/record.url?scp=4244091131&partnerID=8YFLogxK
U2 - 10.1016/0375-9601(85)90519-5
DO - 10.1016/0375-9601(85)90519-5
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AN - SCOPUS:4244091131
SN - 0375-9601
VL - 108
SP - 71
EP - 74
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 2
ER -