Ion-atom charge-transfer system for a heavy-ion-beam pumped laser

A general pumping method was proposed that is well suited for conditions in studying heavy-ion-beam pumped short-wavelength laser systems. The scheme was based on the application of two steps for effectual population of specific levels in ionized target species. It was determined that in situ produc...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1994-08, Vol.50 (2), p.1931-1934
Main Authors: Ulrich, A, Gernhäuser, R, Krötz, W, Wieser, J, Murnick, DE
Format: Article
Language:English
Subjects:
426002 - Engineering- Lasers & Masers- (1990-)
664300 - Atomic & Molecular Physics- Collision Phenomena- (1992-)
ALKALI METALS
ARGON
ATOM COLLISIONS
ATOMIC AND MOLECULAR PHYSICS
AUGMENTATION
BEAM PRODUCTION
BEAMS
CESIUM
CHARGE EXCHANGE
CHARGED PARTICLES
COLLISIONS
ELEMENTS
ENERGY RANGE
ENGINEERING
FLUIDS
GASES
ION BEAMS
ION COLLISIONS
ION SOURCES
ION-ATOM COLLISIONS
IONS
LASERS
METALS
MEV RANGE
NONMETALS
RARE GASES
SULFUR IONS
USES
VAPORS
X-RAY LASERS
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Summary:A general pumping method was proposed that is well suited for conditions in studying heavy-ion-beam pumped short-wavelength laser systems. The scheme was based on the application of two steps for effectual population of specific levels in ionized target species. It was determined that in situ production of target ions and succeeding charge transfer can lead to selective population of excited levels in a heavy-ion-beam excited target. Low temperatures and recoil ion velocities promote small Doppler broadening of the emission lines. Population densities of the lower levels of the transitions could be estimated from line intensities. Gain estimates for a laser experiment were found encouraging based on data obtained. Calculations were carried out using a model program designed to predict the parameters for a mode-locked Ar-Cs charge transfer laser on 349-nm line employing an accessible 15-MeV/u Bi beam for pumping. Approximately 1% of the initially formed Ar super(2+) ion density will emerge as upper laser level density after the < 1-ns beam pulses, leading to about 5% gain per pass.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.50.1931