Accurate modeling of benchmark x-ray spectra from highly charged ions of tungsten
- 26 October 2006
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review A
- Vol. 74 (4), 042514
- https://doi.org/10.1103/physreva.74.042514
Abstract
We present detailed collisional-radiative modeling for a benchmark x-ray spectrum of highly charged tungsten ions in the range between 3 and produced in an electron beam ion trap (EBIT) with a beam energy of . Remarkably good agreement between calculated and measured spectra was obtained without adjustable parameters, highlighting the well-controlled experimental conditions and the sophistication of the kinetic simulation of the non-Maxwellian tungsten plasma. This agreement permitted the identification of spectral lines from Cu-like and Ni-like ions, led to the reinterpretation of a previously known line in Ni-like ion as an overlap of electric-quadrupole and magnetic-octupole lines, and revealed subtle features in the x-ray spectrum arising from the dominance of forbidden transitions between excited states. The importance of level population mechanisms specific to the EBIT plasma is discussed as well.
Keywords
This publication has 20 references indexed in Scilit:
- Comparing plasma population kinetics codes: Review of the NLTE-3 Kinetics WorkshopJournal of Quantitative Spectroscopy and Radiative Transfer, 2006
- Plasma–wall interaction, a key issue on the way to a steady state burning fusion devicePhysica Scripta, 2006
- Low jitter metal vapor vacuum arc ion source for electron beam ion trap injectionsReview of Scientific Instruments, 2005
- An Electron Beam Ion Trap (EBIT) Plus a Microcalorimeter: A Good Combination for Laboratory AstrophysicsPhysica Scripta, 2005
- The study of X-ray M-shell spectra of W ions from the Lawrence Livermore National Laboratory Electron Beam Ion TrapCanadian Journal of Physics, 2004
- Highly charged ionsJournal of Physics B: Atomic, Molecular and Optical Physics, 2001
- Observations of x-ray spectra from highly charged tungsten ions in tokamak plasmasJournal of Physics B: Atomic, Molecular and Optical Physics, 1997
- Classification of X-Ray Spectra from Laser Produced Plasmas of Atoms from Tm to Pt in the Range 6-9 ÅPhysica Scripta, 1983
- Identification of the spectra of Hf xlv, Ta xlvi, W xlvii, and Re xlviii isoelectronic to Ni i in laser- produced plasmasJournal of the Optical Society of America, 1980
- X-ray spectra from exploded-wire plasmasPhysical Review A, 1977