Development of a formed-ferrite flash plasma light source for gas laser applications

Watanabe, Kazuhiro; Kashiwabara, Shigeru; Fujimoto, Ryozo

doi:10.1063/1.98102

Cited by 24 publications

(5 citation statements)

References 5 publications

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“…A 0 transition. [18][19][20][48][49][50][51][52][53][54] Because of the D X excitation sources utilized-electric discharges, lamps with monochromators, ArF lasers-it was impossible to achieve single vibrational level resolution in the excitation of the D state. The measurements were performed under multiple-collision conditions and the kinetic analysis utilized a onelevel approximation.…”

Section: Introductionmentioning

confidence: 99%

Collision-induced non-adiabatic transitions between the ion-pair states of molecular iodine: A challenge for experiment and theory

Tscherbul

Buchachenko

Akopyan

et al. 2004

Phys. Chem. Chem. Phys.

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The ion-pair states of molecular iodine provide a unique system for studying the efficiency, selectivity, and mechanisms of collision-induced non-adiabatic transitions. Non-adiabatic transitions between the first-tier ion-pair states in collisions with molecular partners and rare gases are analyzed and discussed. The qualitative features of the rate constants and product state distributions under single collision conditions are summarized and interpreted in terms of appropriate theoretical approaches. Two mechanisms for the non-adiabatic transitions are clearly identified. The first, operative for collisions involving molecular partners possessing permanent or transition electrostatic moments, is highly selective. It connects the initially prepared level in the E 0 þ g electronic state with the near-resonant vibronic level of the D 0 þ u state with a minimum change of the total angular momentum. In an extreme quasi-resonant case when the gap between initial and final rovibronic level is less than 1 cm À1 , this mechanism has a giant cross section, 40 times that of a gas kinetic collision. An electrostatic model, which includes the coupling of the giant E-D transition dipole moment with a moment of the colliding partner and the semiclassical Born approximation, provides a plausible interpretation of this mechanism. A second mechanism is shown to govern collisions with rare gas atoms. It results in population of several ion-pair states and broad distributions over rovibronic levels. This mechanism is successfully interpreted by quantum scattering calculations based on the diatomics-in-molecule diabatic potential energy surfaces and coupling matrix elements. The calculations provide good agreement with experimental measurements and reveal different mechanisms for the population of different electronic states. Unexplained features of the non-adiabatic dynamics and directions of future work are outlined.

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Section: Introductionmentioning

confidence: 99%

Collision-induced non-adiabatic transitions between the ion-pair states of molecular iodine: A challenge for experiment and theory

Tscherbul

Buchachenko

Akopyan

et al. 2004

Phys. Chem. Chem. Phys.

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“…At x=7 cm it is ~4о , and a little wider in from of discharge. It is probably due to structural damage to ferrite surface (as described in [2], it becomes amorphous) during discharge along a specified path. Change in structure as well as increased roughness lead to increased dispersion.…”

Section: Resultsmentioning

confidence: 99%

“…The photos demonstrated that the path didn't deform throughout all of the experiments described in this work and that the discharge always stayed right on it. More in depth description of the discharge propagation mechanism along the conductive path over ferrite surface was described in [2].…”

Section: Methodsmentioning

confidence: 99%

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Spatial distributions of X-ray radiation during ferrite surface breakdown

Andreev

Bernatskiy

Dushkin

et al. 2022

J. Phys.: Conf. Ser.

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“…Among them, formed-ferrite surface discharges 9 have attractive features: a very simple and relatively compact system, the possibility of a pulseperiodic operating regime, and a relatively low operating voltage. [9][10][11] This photolysis light source has been used in the present work to drive and study the XeF(C -A) laser.…”

mentioning

confidence: 99%

XeF (C–A) laser pumped by formed-ferrite open discharge radiation

Sentís

Tcheremiskine

Delaporte

et al. 1997

Applied Physics Letters

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A study of a high-power blue–green XeF(C–A) laser photolytically pumped by an open discharge along a formed-ferrite surface is presented. A laser output energy of 1.3 J was extracted from a gas mixture of 4 Torr XeF2, 230 Torr N2, and 680 Torr Kr, with a stable optical resonator. With a flat optical resonator, a laser output energy of 1 J was obtained. In this case, we observed an oscillating regime of the laser power, which indicates that the unsaturated gain value was close to the laser action threshold. Perspectives of optical pumping schemes are presented.

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Development of a formed-ferrite flash plasma light source for gas laser applications

Cited by 24 publications

References 5 publications

Collision-induced non-adiabatic transitions between the ion-pair states of molecular iodine: A challenge for experiment and theory

Collision-induced non-adiabatic transitions between the ion-pair states of molecular iodine: A challenge for experiment and theory

Spatial distributions of X-ray radiation during ferrite surface breakdown

XeF (C–A) laser pumped by formed-ferrite open discharge radiation

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