Efficient generation in a chemical oxygen — iodine laser with a low buffer-gas flow rate

Azyazov, Valeriy N.; Safonov, V S; Ufimtsev, Nikolay I.

doi:10.1070/qe2002v032n09abeh002294

Cited by 9 publications

(5 citation statements)

References 2 publications

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“…Consider the iodine injector in the form of a thin walled tube with 2 mm inner diameter and ten 0.5 mm holes. About 0.2 mmol s −1 of N 2 at 26 Torr pressure flows through it [19]. Assuming the same flow rate of Ar for these conditions and for 350 K temperature we obtain τ D /τ V ≈ 4.2 for the Ar : I mixture.…”

Section: Estimations Of Atomic Iodine Loss Due To Recombinationmentioning

confidence: 71%

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Mikheyev¹,

Shepelenko²,

Voronov³

et al. 2004

J. Phys. D: Appl. Phys.

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The production of iodine atoms by means of glow discharge in gas flow, with a view to using them in chemical oxygen–iodine lasers, was studied. A dc glow discharge was sustained between coaxial electrodes in the vortex flow of argon, used as the carrier gas, with the addition of iodine-containing molecular precursors CH3I and HI.In the experiments a high atomic iodine concentration of more than 1016 cm−3 was achieved at a pressure of the Ar carrier of up to 30 Torr. The dissociation degree of the precursor molecules was 80–100% for CH3I and 100% for HI.The loss of iodine atoms in volumetric processes and due to diffusion to the walls of the transporting duct from the discharge region to the active medium was estimated. For the existing designs of iodine injectors of oxygen–iodine lasers, the loss of iodine atoms during transportation can be reduced.

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Section: Estimations Of Atomic Iodine Loss Due To Recombinationmentioning

confidence: 71%

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Mikheyev¹,

Shepelenko²,

Voronov³

et al. 2004

J. Phys. D: Appl. Phys.

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“…[7,8,9] CO 2 is an attractive candidate for use as a buffer gas because of its chemical and physical characteristics. It can reduce the I 2 dissociation process by deactivating the intermediate electronically excited states of I 2 (A) and oxygen O 2 ( 1 Σ) molecules.…”

Section: Introductionmentioning

confidence: 99%

Chemical oxygen-iodine laser with a cryosorption vacuum pump with different buffer gases

Fang

Sang

et al. 2015

SPIE Proceedings

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A traditional pressure recovery system is the major obstacle to mobile chemical oxygen-iodine laser (COIL) for its huge volume. A cryosorption vacuum pump was used as the pressure recovery system for different buffer gases. It made COIL become a flexible, quiet and pressure-tight.Experiments were carried out on a verti-COIL, which was designed for N 2 and energized by a square-pipe jet singlet oxygen generator (JSOG). The output power with CO 2 was 27.3% lower than that with N 2 , but the zeolite bed showed an adsorption capacity threefold higher for CO 2 than for N 2 in the continuous operation. The great volume efficiency interested researchers.Chemical oxygen-iodine laser, COIL, buffer gas, cryosorption vacuum pump, recovery syste

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“…There were several gases used as buffer gas since COIL came into being, such as He [2] and N 2 [3,4] used in conventional COIL, and Ar [5], CO 2 [6,7,8] emerged recent years. Comparing with N 2 , the advantages of CO 2 is obvious as follows.…”

Section: Introductionmentioning

confidence: 99%

Research on COIL employing no-flake-nozzle and CO₂as buffer gas

Sang

Zhang

et al. 2015

SPIE Proceedings

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The supersonic nozzles lower temperature to 170-180 K better for the small signal gain coefficient.But at this temperature, the CO 2 buffer gas may become liquid state. A chemical oxygen-iodine laser (COIL) employing CO 2 as buffer gas and no-flake-nozzle was studied. Some mathematical simulation in three-dimensional computation fluid dynamics was adopted first to validate its usability. New nozzles gave the temperature higher than 400 K and considerable small signal gain coefficient. In the same conditions as simulation, experiments gave a 23% of chemical efficiency and 2.5 kW of output power. And it have got rid of "black area", which was familiar in the supersonic COIL both in simulation and experimental results.

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Efficient generation in a chemical oxygen — iodine laser with a low buffer-gas flow rate

Cited by 9 publications

References 2 publications

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Chemical oxygen-iodine laser with a cryosorption vacuum pump with different buffer gases

Research on COIL employing no-flake-nozzle and CO₂as buffer gas

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Efficient generation in a chemical oxygen — iodine laser with a low buffer-gas flow rate

Cited by 9 publications

References 2 publications

Production of iodine atoms by dissociating CH3I and HI in a dc glow discharge in the flow of argon

Production of iodine atoms by dissociating CH3I and HI in a dc glow discharge in the flow of argon

Chemical oxygen-iodine laser with a cryosorption vacuum pump with different buffer gases

Research on COIL employing no-flake-nozzle and CO2as buffer gas

Contact Info

Product

Resources

About

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Production of iodine atoms by dissociating CH₃I and HI in a dc glow discharge in the flow of argon

Research on COIL employing no-flake-nozzle and CO₂as buffer gas