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Search Publications by: John D. Gillaspy (Fed)

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Displaying 101 - 125 of 314

Accurate Modeling of Benchmark X-ray Spectra from Highly-Charged Ions of Tungsten

October 26, 2006
Author(s)
Y Ralchenko, Joseph N. Tan, John D. Gillaspy, Joshua M. Pomeroy, E Silver
We present detailed collisional-radiative modeling for the benchmark x-ray spectrum of highly-charged tungsten ions in the range between 3 \AA \ and 10 \AA produced in an Electron Beam Ion Trap (EBIT) with a beam energy of 4.08 keV. Remarkably good

Direct Observation of the 2 d3/2 - 2 d5/2 Ground State Splitting in Xe 9+

May 18, 2006
Author(s)
E Takacs, B Blagojevic, K Makonyi, E O. LeBigot, Csilla Szabo-Foster, Yong Sik Kim, John D. Gillaspy
We have used the NIST Electron Beam Ion Trap to observe a visible line at 598.30(13) nm that corresponds to the 4d9 2D3/2 - 4d9 2D5/2 magnetic dipole transition within the ground state configuration of Xe9+. We have found no evidence to support the claim

Low Jitter Metal Vapor Vacuum Arc Ion Source for EBIT Injections

June 27, 2005
Author(s)
G Holland, Craig N. Boyer, J Seely, Joseph N. Tan, Joshua M. Pomeroy, John D. Gillaspy
A metal vapor vacuum arc (MeVVA) ion source having eight different cathodes that are individually selectable via the control electronics and having low trigger jitter (200 ns) is described. The arc plasma is produced by means of a 26 kV, 125 A, 30 s pulse