Quenching of Einstein-coefficients by photons

Technical Report · Fri Mar 01 00:00:00 EST 1991

DOI:https://doi.org/10.2172/6100640· OSTI ID:6100640

Aumayr, F ^[1]; Lee, W; Skinner, C H; Suckewer, S ^[2]

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1. Technische Univ., Vienna (Austria). Inst. fuer Allgemeine Physik
2. Princeton Univ., NJ (USA). Plasma Physics Lab.

Experimental evidence is presented for the change of Einstein's A- coefficients for spontaneous transitions from the upper laser level of argon ion laser discharge due to the presence of the high- intensity laser flux. To demonstrate that this quenching effect cannot be attributed to a reduction in self-absorption of the strong spontaneous emission line, absorption and line profile measurements have been performed. Computer modelling of the reduction of self absorption due to Rabi splitting also indicated that this effect is too small to explain the observed quenching of spontaneous line emissions. 13 refs., 11 figs.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (USA)
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 6100640
• Report Number(s): PPPL-2735; ON: DE91010011; TRN: 91-008483
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
EINSTEIN COEFFICIENTS
QUENCHING
LASER-PRODUCED PLASMA
ARGON IONS
GAS LASERS
LINE BROADENING
PHOTON COLLISIONS
POWER DENSITY
SELF-ABSORPTION
ABSORPTION
CHARGED PARTICLES
COLLISIONS
IONS
LASERS
PLASMA
640302* - Atomic
Molecular & Chemical Physics- Atomic & Molecular Properties & Theory