Observed transitions in n = 2 ground configurations of copper, nickel, iron, chromium and germanium in tokamak discharges

Technical Report · Sun Nov 01 04:00:00 EST 1981

DOI:https://doi.org/10.2172/5572693· OSTI ID:5572693

Hinnov, E; Suckewer, S; Cohen, S; Sato, K

A number of spectrum lines of highly ionized copper, nickel, iron, chromium, and germanium have been observed and the corresponding transitions identified. The element under study is introduced into the discharge of the PLT Tokamak by means of rapid ablation by a laser pulse. The ionization state is generally distinguishable from the time behavior of the emitted light. New identifications of transitions are based on predicted wavelengths (from isoelectronic extrapolation and other data) and on approximate expected intensities. All the transitions pertain to the ground configurations of the respective ions, which are the only states strongly populated at tokamak plasma conditions. These lines are expected to be useful for spectroscopic plasma diagnostics in the 1-3 keV temperature range, and they provide direct measurement of intersystem energy separations from chromium through copper in the oxygen, nitrogen, and carbon isoelectronic sequences.

• Research Organization: Princeton Univ., NJ (USA). Plasma Physics Lab.
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 5572693
• Report Number(s): PPPL-1848; ON: DE82008319
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700102* -- Fusion Energy-- Plasma Research-- Diagnostics
CHARGED PARTICLES
CHROMIUM IONS
COPPER IONS
EMISSION SPECTRA
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
GERMANIUM IONS
GROUND STATES
IMPURITIES
IONIZATION
IONS
IRON IONS
NICKEL IONS
PLASMA DIAGNOSTICS
PLT DEVICES
SPECTRA
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS