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

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.25.2293· OSTI ID:5224839

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 Princeton Large Torus 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 extrapolations and other data) and on approximate expected intensities. All the transitions pertain to the ground-state 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 University, Plasma Physics Laboratory, Princeton, New Jersey 08544
• OSTI ID: 5224839
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 25:4; ISSN PLRAA
• 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-LEVEL TRANSITIONS
GERMANIUM IONS
IMPURITIES
IONS
MULTICHARGED IONS
NICKEL IONS
PLASMA DIAGNOSTICS
PLT DEVICES
SPECTRA
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS