Measurement of EUV spectra from high Z elements in the Large Helical Device
|Title:||Measurement of EUV spectra from high Z elements in the Large Helical Device||Authors:||Suzuki, C.
Harte, Colm S.
|Permanent link:||http://hdl.handle.net/10197/3708||Date:||21-Sep-2010||Abstract:||Extreme ultra-violet (EUV) emission spectra from highly charged tin, xenon and tungsten ions have been measured in optically thin high-temperature plasmas produced in the Large Helical Device (LHD) at the National Institute for Fusion Science by using a grazing incidence spectrometer and a tracer-encapsulated solid pellet (TESPEL) injector. Quasi-continuous spectral features arising from unresolved transition array (UTA) of open 4d subshell ions were commonly observed for tin, xenon and tungsten around 13.5, 11, and 5 nm, respectively, when edge plasma was cooled enough. The spectral appearance obviously depends on edge electron temperature and atomic number. In the case of intermediate edge temperature, sharp discrete lines from highly charged open 4s or 4p subshell ions are clearly observed for tin and xenon in longer wavelength side of the UTAs but not for tungsten. Assignments of the strong discrete lines have been performed with the help of comparisons with the other experimental data and the theoretical calculations by Cowan code. Contribution of open 4f subshell ions should also be considered to interpret the whole spectra from tungsten ions.||Funding Details:||Science Foundation Ireland||Type of material:||Conference Publication||Publisher:||American Institute of Physics||Copyright (published version):||2011 American Institute of Physics||Keywords:||LHD; High Z elements; EUV spectra; Highly charged ions; Tin; Xenon; Tungsten||Subject LCSH:||Ultraviolet spectra
|DOI:||10.1063/1.3585803||Language:||en||Status of Item:||Peer reviewed||Is part of:||A. Bernotas, R. Karazija, Z. Rudzikas (eds.). AIP Conference Proceedings : Volume 1344 : 7th International Conference On Atomic and Molecular Data and Their Applications - ICAMDATA-2010||Conference Details:||7th International Conference On Atomic and Molecular Data and Their Applications - ICAMDATA-2010, 21–24 September 2010, Vilnius, (Lithuania)|
|Appears in Collections:||Physics Research Collection|
Show full item record
Page view(s) 10183
This item is available under the Attribution-NonCommercial-NoDerivs 3.0 Ireland. No item may be reproduced for commercial purposes. For other possible restrictions on use please refer to the publisher's URL where this is made available, or to notes contained in the item itself. Other terms may apply.