Photopumping and fluorescence in a laser-produced plasma. II : Simulations

Detailed radiative-transfer simulations are presented for plasma that is prepared in a predominantly heliumlike ground state and then photopumped. The plasma conditions in the simulation are based on those determined in a line-coincidence experiment described in the preceding paper (C. A. Back, C. C...

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Bibliographic Details
Published in:Physical review. A, Atomic, molecular, and optical physics Atomic, molecular, and optical physics, 1991-11, Vol.44 (10), p.6743-6761
Main Authors: BACK, C. A, CASTOR, J. I, KLEIN, R. I, DYKEMA, P. G, LEE, R. W
Format: Article
Language:English
Subjects:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
700320 - Plasma Diagnostic Techniques & Instrumentation- (1992-)
ALUMINIUM IONS
CHARGED PARTICLES
COMPUTERIZED SIMULATION
EMISSION
ENERGY LEVELS
Exact sciences and technology
FLUORESCENCE
GROUND STATES
HOT PLASMA
IONS
LASER-PRODUCED PLASMA
LUMINESCENCE
OPTICAL PUMPING
PHOTON EMISSION
Physics
Physics of gases, plasmas and electric discharges
Physics of plasmas and electric discharges
PLASMA
Plasma interactions (nonlaser)
PLASMA SIMULATION
PUMPING
RESONANCE FLUORESCENCE
SIMULATION
SPECTROSCOPY
X-RAY SPECTROSCOPY
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Summary:Detailed radiative-transfer simulations are presented for plasma that is prepared in a predominantly heliumlike ground state and then photopumped. The plasma conditions in the simulation are based on those determined in a line-coincidence experiment described in the preceding paper (C. A. Back, C. Chenais-Popovics, and R. W. Lee, Phys. Rev. A 44, 6730 (1991)). The measured emitted flux of the resonance line of the heliumlike aluminum ion, at 7.757 A, is used as input for the photon pump. Predictions of the fluorescence are directly compared with experimental results. The synthetic spectra are calculated, and the effect of the photopumping on the level populations and ionization balance is discussed. Also a description is included of the equivalent two-level-atom radiative-transfer scheme that is used to calculate the self-consistent solution of the level populations and the radiation field.
ISSN:1050-2947
1094-1622
DOI:10.1103/PhysRevA.44.6743