Simulations of a Maxwellian Plasma using an Electron Beam Ion Trap

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Published under licence by IOP Publishing Ltd
, , Citation D W Savin et al 1999 Phys. Scr. 1999 312 DOI 10.1238/Physica.Topical.080a00312

1402-4896/1999/T80B/312

Abstract

Using the Lawrence-Livermore electron beam ion trap (LLNL-EBIT), we produce a quasi-Maxwellian plasma by sweeping the energy of the nearly monoenergetic beam so the time spent an any energy is proportional to the Maxwell-Boltzmann probability at that energy. To verify the accuracy of the quasi-Maxwellian, we measure line emission due to dielectronic recombination (DR) and electron impact excitation (EIE) of Mg10+ and Ne8+, for a range of simulated temperatures. The ratio of DR to EIE lines in heliumlike ions is a well understood temperature diagnostic. The spectroscopically inferred temperatures are in excellent agreement with the simulated temperatures.

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10.1238/Physica.Topical.080a00312