TY - JOUR
T1 - Soft X-ray bands of highly ionized tungsten, gold and lead emitted by the TEXT tokamak plasma
AU - Finkenthal, M.
AU - Huang, L. K.
AU - Lippmann, S.
AU - Moos, H. W.
AU - Mandelbaum, P.
AU - Schwob, J. L.
AU - Klapisch, M.
PY - 1988/2/29
Y1 - 1988/2/29
N2 - Spectra of highly ionized tungsten, gold and lead emitted from the TEXT tokamak have been recorded in the 20-70 Å range by means of a grazing incidence, time-resolving spectrograph. The narrow and bright emission bands centered around 40, 45 and 50 Å in Pb, Au and W respectively, and bands of lesser intensities at lower wavelenghts, are emitted by a very large number of superimposed lines originating from transitions of the type 4d104fn-4d94fn+1, 4d104fn-4d94fn5p and 4fn-4fn-15l (l=d, g). The isoelectronic analysis shows that at the electron temperatures prevailing in the present experiment, Te≈800 eV, there are no contributions to the bands from ions having a 4p64dn ground state. This, together with the experimental measurement of the electron temperature profile, indicates that the heavy ion impurity distribution in the tokamak plasma is very close to ionization equilibrium.
AB - Spectra of highly ionized tungsten, gold and lead emitted from the TEXT tokamak have been recorded in the 20-70 Å range by means of a grazing incidence, time-resolving spectrograph. The narrow and bright emission bands centered around 40, 45 and 50 Å in Pb, Au and W respectively, and bands of lesser intensities at lower wavelenghts, are emitted by a very large number of superimposed lines originating from transitions of the type 4d104fn-4d94fn+1, 4d104fn-4d94fn5p and 4fn-4fn-15l (l=d, g). The isoelectronic analysis shows that at the electron temperatures prevailing in the present experiment, Te≈800 eV, there are no contributions to the bands from ions having a 4p64dn ground state. This, together with the experimental measurement of the electron temperature profile, indicates that the heavy ion impurity distribution in the tokamak plasma is very close to ionization equilibrium.
UR - http://www.scopus.com/inward/record.url?scp=0001390513&partnerID=8YFLogxK
U2 - 10.1016/0375-9601(88)90691-3
DO - 10.1016/0375-9601(88)90691-3
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AN - SCOPUS:0001390513
SN - 0375-9601
VL - 127
SP - 255
EP - 258
JO - Physics Letters, Section A: General, Atomic and Solid State Physics
JF - Physics Letters, Section A: General, Atomic and Solid State Physics
IS - 5
ER -