Published May 1, 1984 | Version v1
Journal article Metadata-only

Recoil measurement of the atom excited in a supersonic beam by electron collision for helium resonance study

Creators

  • 1. Universite de Rennes, 35 - (France)

Description

A method giving an indirect measurement of the inelastic scattering of electrons at large angles is described. This method is based on the recoil measurement of atoms in a supersonic beam excited by electron impact and detected in metastable states. This method has been applied to study of helium resonances. We have found that the resonant state He-***(2 s2 2p) 2P manifests itself as an increase in cross section for the inelastic backscattering of electrons

Abstract (French)

Nous presentons une methode de mesure indirecte de la diffusion inelastique d'electrons sous grands angles. Cette methode est basee sur la mesure du recul d'atomes d'un faisceau supersonique excites par choc electronique et dectes dans des etats metastables. Nous appliquons cette methode a l'etude des resonances de l'helium. Nous montrons que l'etat resonnant He-***(2 s2 2p) 2P se manifeste par une augmentation de la section efficace de retrodiffusion inelastique des electrons

Additional details

Additional titles

Original title (French)
Etude des resonances de l'helium par recul de l'atome excite par impact electronique dans un faisceau supersonique

Publishing Information

Journal Title
J. Phys. (Paris), Lett.
Journal Volume
45
Journal Issue
9
Series
J. Phys. (Paris), Lett.
Journal Page Range
L.427-L.432
ISSN
0302-072X

INIS

Country of Publication
France
Country of Input or Organization
France
INIS RN
15065209
Subject category
S74: ATOMIC AND MOLECULAR PHYSICS;
Descriptors DEI
BACKSCATTERING; CROSS SECTIONS; ELECTRON BEAMS; ELECTRON-ATOM COLLISIONS; HELIUM; INELASTIC SCATTERING; METASTABLE STATES; RECOILS; RESONANCE
Descriptors DEC
ATOM COLLISIONS; BEAMS; COLLISIONS; ELECTRON COLLISIONS; ELEMENTS; ENERGY LEVELS; EXCITED STATES; LEPTON BEAMS; NONMETALS; PARTICLE BEAMS; RARE GASES; SCATTERING