Enhanced negative ion formation via electron attachment to electronically-excited states
Abstract
Recent basic studies on electron attachment to laser-excited molecules show that electron attachment to electronically-excited states can have orders of magnitude larger cross sections compared to the respective ground electronic states. Even though systematic studies have not been conducted, there are indications that electronically-excited states may play a significant role in negative ion formation in gas discharges. The high-lying Rydberg states could be of particular significance since, (i) their production efficiencies are high, and (ii) they have comparatively long lifetimes. Such states could be populated in discharge sources via direct electron impact or via excitation transfer from metastable states of inert gases.
- Authors:
-
- Oak Ridge National Lab., TN (United States). Health Sciences Research Div.
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States); National Science Foundation, Washington, DC (United States)
- OSTI Identifier:
- 195733
- Report Number(s):
- CONF-9510304-1
ON: DE96005746; TRN: AHC29605%%109
- DOE Contract Number:
- AC05-84OR21400
- Resource Type:
- Conference
- Resource Relation:
- Conference: Joint meeting of the 7. international symposium on the production and neutralization of negative ions and beams and the 6. European workshop on the production and application of light negative ions, Upton, NY (United States), 23-27 Oct 1995; Other Information: PBD: [1995]
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 66 PHYSICS; HYDROGEN IONS 1 MINUS; ION SOURCES; HYDROGEN; ELECTRON ATTACHMENT; RYDBERG STATES; ENERGY-LEVEL TRANSITIONS; ION DENSITY; ELECTRIC DISCHARGES; ELECTRON-MOLECULE COLLISIONS; EXCITATION; PHOTOIONIZATION; MULTI-PHOTON PROCESSES; DISSOCIATION; IONIC COMPOSITION
Citation Formats
Pinnaduwage, L A, and Univ. of Tennessee, Knoxville, TN. Enhanced negative ion formation via electron attachment to electronically-excited states. United States: N. p., 1995.
Web.
Pinnaduwage, L A, & Univ. of Tennessee, Knoxville, TN. Enhanced negative ion formation via electron attachment to electronically-excited states. United States.
Pinnaduwage, L A, and Univ. of Tennessee, Knoxville, TN. 1995.
"Enhanced negative ion formation via electron attachment to electronically-excited states". United States. https://www.osti.gov/servlets/purl/195733.
@article{osti_195733,
title = {Enhanced negative ion formation via electron attachment to electronically-excited states},
author = {Pinnaduwage, L A and Univ. of Tennessee, Knoxville, TN},
abstractNote = {Recent basic studies on electron attachment to laser-excited molecules show that electron attachment to electronically-excited states can have orders of magnitude larger cross sections compared to the respective ground electronic states. Even though systematic studies have not been conducted, there are indications that electronically-excited states may play a significant role in negative ion formation in gas discharges. The high-lying Rydberg states could be of particular significance since, (i) their production efficiencies are high, and (ii) they have comparatively long lifetimes. Such states could be populated in discharge sources via direct electron impact or via excitation transfer from metastable states of inert gases.},
doi = {},
url = {https://www.osti.gov/biblio/195733},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Dec 31 00:00:00 EST 1995},
month = {Sun Dec 31 00:00:00 EST 1995}
}
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