Helium atom line-intensity ratios as an integrated diagnostic tool for low-pressure and low-density plasmas
Sign Up to like & getrecommendations! Published in 2018 at "Physics of Plasmas"
DOI: 10.1063/1.5027167
Abstract: The intensity ratios between specific pairs of helium atom (HeI) emission lines are functions of the electron temperature (Te) and density (ne), and these functions have been used for the analysis of Te and ne… read more here.
Keywords: intensity ratios; density plasmas; helium atom; density ... See more keywords
Precision measurement of the forbidden 21S0 – 23S1 transition frequency in a helium atom
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DOI: 10.1070/qel16568
Abstract: We demonstrate the possibility of measuring the forbidden 21S0 – 23S1 transition frequency (λ = 1557 nm) of a helium atom by the method of stimulated Raman scattering through the intermediate 23P1 level. Singlet (21S0)… read more here.
Keywords: forbidden 21s0; helium atom; 21s0 23s1; transition ... See more keywords
Exact time-dependent density-functional theory for nonperturbative dynamics of the helium atom
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DOI: 10.1103/physreva.104.032821
Abstract: By inverting the time-dependent Kohn-Sham equation for a numerically exact dynamics of the helium atom, we show that the dynamical step and peak features of the exact correlation potential found previously in one-dimensional models persist… read more here.
Keywords: time dependent; kohn sham; helium atom; dynamics helium ... See more keywords
Motion Equations of Helium Atom through Ordered and Disordered Quartz Structure
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DOI: 10.4028/www.scientific.net/ddf.380.98
Abstract: In order to describe helium atom motion through the disordered quartz structure the local chain approach is used. The number of local chains equals the number of nearest neighbours (i.e., the closest atoms to those… read more here.
Keywords: motion; order; helium atom; quartz structure ... See more keywords