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

Journal Article · Tue Mar 15 00:00:00 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, Vol. 83, Issue 3; Other Information: DOI: 10.1103/PhysRevA.83.032517; (c) 2011 American Institute of Physics; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

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