Excitation of the 1s/sub 5/ and 1s/sub 4/ levels of neon by low-energy electrons

Journal Article · Sat Aug 01 04:00:00 EDT 1987 · Phys. Rev. A; (United States)

DOI:https://doi.org/10.1103/PhysRevA.36.999· OSTI ID:6010595

Tachibana, K; Phelps, A V

Excitation coefficients for production of 1s/sub 5/ and 1s/sub 4/ levels (Paschen notation) of neon in collisions with low-energy electrons have been measured using a drift-tube technique combined with laser absorption and laser-induced fluorescence techniques. The absorption and fluorescence signals have been analyzed using coupled rate equations which include the effects of population mixing among these levels in collisions with neon atoms. The excitation coefficients for the metastable and resonance levels ..cap alpha../sub M//N and ..cap alpha../sub R//N have been obtained as functions of the electric field to gas density ratio E/N. The measured values of ..cap alpha../sub M//N vary from 1.3 x 10/sup -24/ m/sup 2/ at E/N = 1.6 x 10/sup -21/ V m/sup 2/ to 6.5 x 10/sup -22/ m/sup 2/ at 3.0 x 10/sup -19/ V m/sup 2/. The values of ..cap alpha../sub R//N are comparable in the experimental E/N range. The experimental excitation coefficients are in agreement with values calculated from a Boltzmann analysis using a recommended set of electron excitation cross sections derived from published experimental electron beam data.

• Research Organization: Joint Institute for Laboratory Astrophysics, National Bureau of Standards and University of Colorado, Boulder, Colorado 80309-0440 and Department of Electronics, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto 606, Japan
• OSTI ID: 6010595
• Journal Information: Phys. Rev. A; (United States), Journal Name: Phys. Rev. A; (United States) Vol. 36:3; ISSN PLRAA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ATOM COLLISIONS
COLLISIONS
DRIFT TUBES
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
EXCITED STATES
FLUIDS
FLUORESCENCE
GASES
KINETICS
LASERS
LUMINESCENCE
METASTABLE STATES
NEON
NONMETALS
RARE GASES
RESONANCE FLUORESCENCE