Spectroscopy of diagnostically important magnetic-dipole lines in highly charged 3d{sup n} ions of tungsten

Journal Article · Tue Mar 15 04:00:00 EDT 2011 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.83.032517· OSTI ID:21541279

Ralchenko, Yu; Draganic, I N; Osin, D; Gillaspy, J D; Reader, J ^[1]

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1. National Institute of Standards and Technology, Gaithersburg, Maryland 20899-8422 (United States)

An electron-beam ion trap (EBIT) is used to measure extreme ultraviolet spectra between 10 and 25 nm from highly charged ions of tungsten with an open 3d shell (W xlviii through W lvi). We found that almost all strong lines are due to the forbidden magnetic-dipole (M1) transitions within 3d{sup n} ground configurations. A total of 37 previously unknown spectral lines are identified using detailed collisional-radiative (CR) modeling of the EBIT spectra. A level-merging scheme for compactification of rate equations is described. The CR simulations for Maxwellian plasmas show that several line ratios involving these M1 lines can be used to reliably diagnose temperature and density in hot fusion devices.

• OSTI ID: 21541279
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 3 Vol. 83; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
74 ATOMIC AND MOLECULAR PHYSICS
BEAMS
CHARGED PARTICLES
COMPACTIFICATION
D STATES
DENSITY
DIPOLES
ELECTRON BEAMS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXTREME ULTRAVIOLET SPECTRA
GROUND STATES
IONS
KINETICS
LEPTON BEAMS
M1-TRANSITIONS
MAGNETIC DIPOLES
MULTIPOLE TRANSITIONS
MULTIPOLES
PARTICLE BEAMS
PHYSICAL PROPERTIES
PLASMA
REACTION KINETICS
SIMULATION
SPECTRA
SPECTROSCOPY
THERMONUCLEAR DEVICES
TRAPPING
TUNGSTEN IONS
ULTRAVIOLET SPECTRA