Spectroscopic studies of diatomic noble gas halides. III. Analysis of XeF 3500 Å band system

Tellinghuisen, Joel; Tellinghuisen, Patricia C.; Tisone, G. C.; Hoffman, James M.; Hays, A. K.

doi:10.1063/1.435582

Cited by 68 publications

(15 citation statements)

References 40 publications

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“…(b) In the process of interaction with radiation, only the levels with a low vibrational quantum number participate [10,11,39,53,54], for which the vibrational relaxation rates differ slightly [40,42,55].…”

Section: Rate Equations For Rare-gas Halide Excimer Lasersmentioning

confidence: 99%

Rate equations for modelling of short-pulse rare-gas halide excimer lasers

Badziak

1996

Optical and Quantum Electronics

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In this work, on the basis of the analysis of data relating to relaxation processes and emission spectra of excimer molecules, the rate equations for modelling short-pulse rare-gas halide excimer lasers are formulated and discussed. The equations take into account relaxation processes important for short-pulse generation, such as decay of B-, C-and X-states, vibrational relaxation in these states, and B-C mixing. As a special case for these equations, simplified equations for KrF and XeCI lasers are introduced. The gain recovery curves and the dependences of saturation energy on pulse duration, computed both for KrF and XeCI, coincide well with the experimental data. Discussion of the factors influencing the gain dynamics and the saturation energy of these media, is also presented.

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Section: Rate Equations For Rare-gas Halide Excimer Lasersmentioning

confidence: 99%

Rate equations for modelling of short-pulse rare-gas halide excimer lasers

Badziak

1996

Optical and Quantum Electronics

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“…Indeed, the only exceptions to this picture appeared to be the B→X and D( 1 2 2 P 1/2 )→X transitions in XeCl, where fine violetdegraded band structure was observed, 5,18 and these same transitions in XeF, where quite rich discrete structure was manifested. [19][20][21][22][23] For XeBr ͑and most other RgX species͒ the high-pressure B→X spectrum seemed to show only soft undulatory structure, with intervals roughly marking the vibrational spacing in the excited state ͑Fig. 1͒.…”

Section: Introductionmentioning

confidence: 98%

The B(1/2 2P3/2)→X(1/2 2Σ+) transition in XeBr

Tellinghuisen

1995

The Journal of Chemical Physics

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The B(1/2 2P3/2)→X(1/2 2Σ+) transition in XeBr is recorded at high resolution, using a CCD array detector to record spectra from Tesla discharge sources containing isotopically pure 136Xe with 81Br2 or 79Br2. The high signal/noise capabilities of the detector permit the measurement of discrete vibrational structure in this system, which has normally been treated as a purely bound–free transition. The assignments comprise 119 υ′–υ″ bands for 136Xe81Br and 86 for 136Xe79Br, spanning υ′=0–33 and υ″=0–16. The van der Waals ground state is analyzed through fits to the customary polynomials in (υ+1/2) and to near-dissociation expansions. Franck–Condon calculations are used to locate the X-state potential on the internuclear axis relative to the B state, which is modeled as a Rittner potential. The following fundamental spectroscopic constants (units cm−1, for 136Xe81Br) are obtained from the analysis: Te′=35 863.2, ωe′=135.72, ωexe′=0.32, ωe″=25.7, ωexe″=0.62. The ground state has a dissociation energy 𝒟e″=254±2 cm−1 and supports 24 bound vibrational levels.

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“…SiHF3 +F -SiF3 + HF (9) SiHF3 + F2 -> SiF3 + F The molecules SiH3, SiH2F, SiHF2 and SiF3 carry very high thermochemical energy.4 Reactions 1 1, 12, 13 and 14 are all exothermic and may produce XeF(B). It also should be noted that 1 1, 12, 13 and 14 can also produce atomic xenon and fluorine.…”

Section: Methodsmentioning

confidence: 99%