Discharged generator of singlet oxygen for oxygen-iodine laser. Transport kinetics of O2(a 1δg) and O2(b 1σ g + ) molecules and O(3 P) atoms in Ar:O2 and He:O2 flows excited by a 13.56-MHz discharge

Braginsky, O.V.; Vasil'eva, A. N.; Klopovsky, K. S.; Kovalev, A. S.; Lopaev, Dmitry; Рахимова, Т. В.; Rakhimov, A. T.

doi:10.1134/s1054660x06080020

Cited by 9 publications

(24 citation statements)

References 31 publications

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“…Rakhimova and co-workers [14,15,27] proposed that threebody deactivation was responsible for a decrease in O (a) yield that was observed as they raised the pressure of their RF discharge source. As high-pressure operation of the discharge generators will be needed for high power devices, control and characterization of the three-body deactivation channels is an important issue.…”

Section: The Role Of Atomic Oxygen In Doilmentioning

confidence: 99%

“…Since then, Carroll and co-workers have made significant advances in the development of RF discharges for O (a) production [35]. Building on fundamental plasma studies [14][15][16][17]27,[36][37][38][39][40][41], they have investigated the effects of discharge frequency, geometry and electrode length on the yield and power loading. Capacitively coupled transverse discharges with small electrode gaps were found to be most effective.…”

Section: Recent Advances In Doil Developmentmentioning

confidence: 99%

“…Based on studies of RF discharges in O , O /He and O /Ar , Braginsky et al [27] estimated that the three-body quenching rate constants were comparable for M=He, Ar and O ( cm s . Palla et al [12] have modeled DSOG performance by considering just the deactivation caused by M=O , with a rate constant of cm s .…”

Section: Kinetics Issuesmentioning

confidence: 99%

“…Much of this work has been conducted by Kodymova, Spalek and co-workers [72][73][74][75][76]. To date the reactions (27) and (28) www.lpr-journal.org have been examined. The F or Cl atoms were derived from the reactions (29) and (30) The use of DI is preferred for reaction (27) as HF is a much more aggressive quencher of I* than DF.…”

Section: Iodine Dissociationmentioning

confidence: 99%

“…To date the reactions (27) and (28) www.lpr-journal.org have been examined. The F or Cl atoms were derived from the reactions (29) and (30) The use of DI is preferred for reaction (27) as HF is a much more aggressive quencher of I* than DF. Chemical generation of I atoms by both schemes has been demonstrated.…”

Section: Iodine Dissociationmentioning

confidence: 99%

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Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Heaven

2010

Laser & Photonics Reviews

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Chemical oxygen-iodine lasers are unique in their ability to generate high-power beams with near diffraction limited beam quality. The operating wavelength, 1.315 μm is readily transmitted by the atmosphere and compatible with fiber optics beam delivery systems. However, applications of the laser are severely limited by logistical problems associated with the complex chemistry used to power the device. Electrical or microwave discharge excitation of oxygen-iodine lasers offers an attractive alternative that eliminates the chemical power generation problems and has the possibility of closedcycle operation. A discharge oxygen-iodine laser was first demonstrated in 2005. Since that time the power of the device has been improved by a factor of 400 and much has been learned concerning the physics and chemistry of the discharge driven system. Although our current understanding of the chemical kinetics is incomplete, parametric studies of laser performance show considerable promise for further scaling. This article reviews the basic principles of the discharge oxygen iodine laser, summarizes the most recent advances, and outlines some of the unresolved questions regarding the production and removal of excited species in the gas flow.

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Section: The Role Of Atomic Oxygen In Doilmentioning

confidence: 99%

Section: Recent Advances In Doil Developmentmentioning

confidence: 99%

Section: Kinetics Issuesmentioning

confidence: 99%

Section: Iodine Dissociationmentioning

confidence: 99%

Section: Iodine Dissociationmentioning

confidence: 99%

See 3 more Smart Citations

Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Heaven

2010

Laser & Photonics Reviews

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Fluid model of H‐form of the positive column in DC oxygen glow discharge

Laca

Morávek

Schmiedt

et al. 2017

Contrib. Plasma Phys

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In our contribution, the positive column of oxygen DC glow discharge is investigated using methods of computational physics at medium pressures (200–687 Pa) and discharge currents from 20 to 40 mA. Under mentioned conditions, the attributes of the DC oxygen discharge are particular, what is based on the existence of two forms: H‐form and T‐form. One‐dimensional fluid model of the stable H‐form has been developed. Not only radial profiles of various species in cylindrical tube but also the reaction among them and their interaction with the walls are taken into account. The model is built on the continuous description of concentration of species and drift‐diffusion approximation of the particle flux. The results of the simulation are in good agreement with experimental ones.

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Fluid model of the positive column in argon‐oxygen direct current glow discharge

Laca

Kaňka

Schmiedt

et al. 2019

Contributions to Plasma Physics

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The positive column of argon‐oxygen direct current (DC) glow discharge was investigated using a fluid model at pressures of around 410 Pa and discharge currents from 10 to 40 mA. The model was used to study the influence of an oxygen admixture on the properties of argon discharge. The simulated intensity of the electric field strength was compared with measured values at 5% and 100% of oxygen concentration. The one‐dimensional model in a cylindrical tube is based on the drift‐diffusion approximation of particle flux and the mean‐electron‐energy approximation is used to describe the electron interaction. The model takes into account the radial profile of particle concentration, the neutral gas kinetic temperature profile, and interactions with the wall in the cylindrical glass discharge tube. It was shown that 2% of the oxygen admixture causes a significant increase in longitudinal electric field strength and gas heating.

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Discharged generator of singlet oxygen for oxygen-iodine laser. Transport kinetics of O2(a 1δg) and O2(b 1σ g + ) molecules and O(3 P) atoms in Ar:O2 and He:O2 flows excited by a 13.56-MHz discharge

Cited by 9 publications

References 31 publications

Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Recent advances in the development of discharge‐pumped oxygen‐iodine lasers

Fluid model of H‐form of the positive column in DC oxygen glow discharge

Fluid model of the positive column in argon‐oxygen direct current glow discharge

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