Published October 28, 1988
| Version v1
Journal article
Competition between photoionisation and predissociation of excited states of H2: laser intensity effects
Creators
- 1. CEA Centre d'Etudes Nucleaire de Saclay, 91 - Gif-sur-Yvette (France). Service de Physique des Atomes et des Surfaces
Description
We have studied the two-photon ionisation of the E, v=O, J=O metastable state of H2, in the 104 - 109 W cm-2 laser intensity range. Anomalous dips are observed at resonance (4777.5 A) on the ionisation signals. These dips are due to competition of photoionisation with very fast predissociation. The resonance profiles exhibit a strong power broadening due to photoionisation of the resonant level whose cross section is measured to be (7 ± 2) x 10-16 cm2. (author)
Additional details
Publishing Information
- Journal Title
- Journal of Physics, B (London). Atomic and Molecular Physics
- Journal Volume
- 21
- Journal Issue
- 20
- Series
- J. Phys., B.
- Journal Page Range
- L625-L630
- ISSN
- 0022-3700
- CODEN
- JPAMA
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- United Kingdom
- INIS RN
- 20009574
- Subject category
- S74: ATOMIC AND MOLECULAR PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- CROSS SECTIONS; DISSOCIATION; EXCITED STATES; EXPERIMENTAL DATA; HYDROGEN; LASER RADIATION; METASTABLE STATES; PHOTOIONIZATION; PHOTON-MOLECULE COLLISIONS; RESONANCE
- Descriptors DEC
- COLLISIONS; DATA; ELECTROMAGNETIC RADIATION; ELEMENTS; ENERGY LEVELS; INFORMATION; IONIZATION; MOLECULE COLLISIONS; NONMETALS; NUMERICAL DATA; PHOTON COLLISIONS; RADIATIONS