Xenon atomic-like 3P2 radiative decay in cold and high-pressure argon

Reininger, R.; Laporte, P.; Subtil, J. L.; Gürtler, P.

doi:10.1016/0009-2614(94)00755-1

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“…9,26 Monochromatic VUV radiation ͑⌬ϭ0.15 nm͒ is focused into an experimental cell attached to a cryostat which allows control of the temperature in the broad range investigated in these experiments ͑85-350 K͒. The cell, capable of withstanding pressures up to 100 bar, has LiF entrance an exit windows and a MgF 2 window oriented perpendicular to them.…”

Section: Experimental System and Methodsmentioning

confidence: 99%

Exciplex vacuum ultraviolet emission spectra of KrAr: Temperature dependence and potentials

Subtil

Jonin

Laporte

et al. 1996

The Journal of Chemical Physics

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The temperature dependence of the emissions from the 0 ϩ ( 3 P 1 )and 1( 3 P 2 ) Kr*Ar exciplex states in the range 85-350 K was studied using time resolved techniques, vacuum ultraviolet synchrotron radiation, and argon samples doped with minimal amounts of krypton. As the temperature is increased, the emission shifts to the blue, its width increases by almost a factor of 2, and the line shape becomes asymmetrical. The experimental line shapes have been simulated by means of Franck-Condon density calculations using the available ground state potential of Aziz and Slaman ͓Mol. Phys. 58, 679 ͑1986͔͒ and by modeling the exciplex potentials as Morse curves. The potential parameters for the 0 ϩ and 1 states are r e ϭ 5.05 Ϯ 0.01 and 5.07Ϯ0.01 a 0 , respectively; D e ϭ 1150 Ϯ 200 cm Ϫ1 and ␤ϭ1.4Ϯ0.1 a 0Ϫ1 for both states. The latter two values yield e ϭ 140 cm Ϫ1 and e x e ϭ 4.3 cm Ϫ1 . The energy positions of the exciplexes's wells and their depths are compared with published results.

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Section: Experimental System and Methodsmentioning

confidence: 99%