Published June 1988
| Version v1
Report
Open
Ionization and ions pair formation in He(n1P) thermal collisions in the Rydberg + molecules low states
Description
The application limits of the free electron model are tested. Experiments on polar molecules and on molecules of high electronical affinity are effectuated. The experiments are carried out in a three crossed beam geometry: a He(21S, 23S) metastable atom beam, a continuous and monomode laser UV beam (316 nm), and a gas target beam. The main results are: high cross sections are observed on NH3, SO2 and C3H6O; the σ''exp'' behavior, as a function of vr, is vr-2; a monotone σ''exp'' (vr) behavior is observed for SF6 and NO2. The experimental data can not be justified by means of the free electron model
Availability note (English)
MF available from INIS under the Report Number.Abstract (French)
Les limites d'application du modele d'electron libre sont testees dans le cadre des experiences realisees sur des molecules polaires et sur des molecules a grande affinite electronique. L'experience est effectuee dans une geometrie a trois faisceaux croises: faisceau d'atomes metastables He(21S, 23S), faisceau laser UV (316 nm) continu et monomode, et faisceau de gaz cible. Les principales observations sont les suivantes: grandes sections efficaces sur les molecules NH3, SO2 et C3H60; la variation de σ''exp'' avec la vitesse vr, est plutot en vr-2; pour les molecules SF6 et NO2 une variation non monotone de σ''exp'' (vr) est observee. Ces resultats ne sont pas explicables par le modele d'electron libreFiles
21032974.pdf
Files
(56.8 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:1bd2753be07788bbae068c40557e3fb2
|
56.8 kB | Preview Download |
Additional details
Additional titles
- Original title (French)
- Ionisation et formation de paires d'ions dans des collisions thermiques He(n
Publishing Information
- Imprint Pagination
- 2 p.
- Report number
- CEA-CONF--9660
Conference
- Title
- 21. National Colloquium on Physics of Atom and Electron Collisions.
- Dates
- 21-24 Jun 1988.
- Place
- Caen (France).
INIS
- Country of Publication
- France
- Country of Input or Organization
- France
- INIS RN
- 21032974
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AFFINITY; ATOMIC BEAMS; CROSS SECTIONS; ELECTRONEGATIVITY; GAS LASERS; ION PAIRS; IONIZATION; LASER RADIATION; MOLECULAR STRUCTURE; MOLECULE-MOLECULE COLLISIONS; MOLECULES; POLARIZED TARGETS; RYDBERG STATES; TEMPERATURE COEFFICIENT
- Descriptors DEC
- AMPLIFIERS; BEAMS; COLLISIONS; ELECTROMAGNETIC RADIATION; ENERGY LEVELS; EQUIPMENT; EXCITED STATES; LASERS; MOLECULE COLLISIONS; RADIATIONS; REACTIVITY COEFFICIENTS; TARGETS