Electron impact measurement of absolute excitation cross sections of the 4/sup 3/P/sub 0,1,2/ states of calcium

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Opt. Spectrosc. (Engl. Transl.); (United States)

OSTI ID:6715538

Dobryshin, V E; Rakhovskii, V I; Shustryakov, V M

The method of intersecting atomic and modulated electron beams was used to measure the total excitation cross sections of the 4/sup 3/P/sub 0,1,2/ metastable states of calcium by electron impact in the range of electron energies from the excitation threshold to 20 eV, with an electron energy spread of the order of 1 eV. The calcium atoms in metastable states were detected by the method of resonance fluorescence, excited with a single-frequency laser using an R6G dye. The absolute excitation cross sections of the 4/sup 3/P/sub 0,1,2/ states of calcium at the maximum of the excitation function (approx. =4 eV) are 1.3 x 10/sup -16/, 3.3 x 10/sup -16/, 5.9 x 10/sup -16/ cm/sup 2/, respectively. The relative measurement error did not exceed +- 30%. Results are compared with available experimental and theoretical data.

• OSTI ID: 6715538
• Journal Information: Opt. Spectrosc. (Engl. Transl.); (United States), Journal Name: Opt. Spectrosc. (Engl. Transl.); (United States) Vol. 52:4; ISSN OPSUA
• Country of Publication: United States
• Language: English

Related Subjects

640304* -- Atomic
Molecular & Chemical Physics-- Collision Phenomena
74 ATOMIC AND MOLECULAR PHYSICS
ALKALINE EARTH METALS
ATOM COLLISIONS
BEAMS
CALCIUM
COLLIDING BEAMS
COLLISIONS
CROSS SECTIONS
DATA
ELECTRON COLLISIONS
ELECTRON-ATOM COLLISIONS
ELEMENTS
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EV RANGE
EV RANGE 10-100
EXCITATION
EXCITED STATES
EXPERIMENTAL DATA
INFORMATION
METALS
METASTABLE STATES
NUMERICAL DATA
P STATES