Character of helium excitation in the negative glow of a glow discharge

Journal Article · Mon Dec 01 04:00:00 EST 1975 · Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 6, pp. 594-597

OSTI ID:4020371

Soldatov, A N; Muravev, I I; Karimov, R G; Evtushenko, G S

The mechanism by which the radiating levels of helium atoms are excited in the plasma of the negative glow of a normal and slightly anomalous discharge is analyzed using the results of a complex investigation of the spatial distribution of the optical and electrokinetic characteristics (the density and energy distribution function of the electrons). It is shown that even at helium pressures of 2--10 Torr the population of the upper levels in the brightest region of the glow is due mainly to electron collisions from the ground state of the atom. Estimates of direct electron excitation from the absolute intensities of the 5016-A HeI and 4686-A HeII spectral lines enable us to extend this conclusion to higher pressures (up to 30 Torr). (AIP)

• Research Organization: Originating Research Org. not identified
• NSA Number: NSA-33-031150
• OSTI ID: 4020371
• Journal Information: Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 6, pp. 594-597, Journal Name: Opt. Spectrosc. (USSR) (Engl. Transl.), v. 39, no. 6, pp. 594-597; ISSN OPSUA
• Country of Publication: United States
• Language: English

Related Subjects

*GLOW DISCHARGES-- ELECTRON-ATOM COLLISIONS
*HELIUM-- ELECTRON-ATOM COLLISIONS
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Molecular & Chemical Physics--Collision Phenomena
ENERGY SPECTRA
LOW PRESSURE
N60200 --Physics (Atomic & Molecular)--Atomic & Molecular Properties
N60400* --Physics (Atomic & Molecular)--Collision Phenomena
N70400 --Physics--Controlled Thermonuclear Research--Kinetics (Experimental)