Chemical generation of atomic iodine for the chemical oxygen–iodine laser. II. Experimental results

Špalek, Otomar; Jirásek, Vı́t; Čenský, Miroslav; Kodymová, Jarmila; Jakubec, Ivo; Hager, Gordon D.

doi:10.1016/s0301-0104(02)00629-8

Cited by 14 publications

(8 citation statements)

References 11 publications

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“…6 The generator with 2 liters of NaClO 2 solution (40% (w/w)) could produce, e.g., 2 mmol s -1 ClO 2 (which was enough for a typical laser operation) for one hour. Nitrogen oxide mixture with nitrogen (10 % NO) and hydrogen iodide mixture with nitrogen (10 % or 5 % HI) were delivered from gas cylinders.…”

Section: Methodsmentioning

confidence: 99%

“…An important effect of the NO:ClO 2 ratio was found already in our former studies on the smallscale reactors. [5][6][7] A dependence of the atomic iodine concentration in the COIL supersonic cavity on NO flow rate is shown in Fig. 2.…”

Section: Generation Of Atomic Iodine In Flow Of Gas Without Singlet Omentioning

confidence: 99%

“…In the nitrogen atmosphere, an effective production of atomic iodine was achieved, in the flow of singlet oxygen, gain was observed 6,7 In this paper, results of investigation of this process performed directly in the cavity of the supersonic COIL are presented.…”

Section: Introductionmentioning

confidence: 99%

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Chemical oxygen-iodine laser with a new method of atomic iodine generation

Špalek

Čenský

Jirásek

et al. 2003

Gas and Chemical Lasers and Intense Beam Applications IV

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A study of recently proposed chemical method of atomic iodine production in the Chemical Oxygen-Iodine Laser (COIL) was performed. The process using gaseous reactants is based on the fast reaction of hydrogen iodide with chemically produced atomic chlorine. In the absence of singlet oxygen, the high yield of atomic iodine was attained (80 to 100 %). In the flow of singlet oxygen, the gain of 0.32 % cm -1 on 3-4 transition in iodine atom was achieved. It was found that both the rate of atomic iodine generation and gain depend substantially on mixing conditions of reacting gases. In laser experiments, effects of ratio of reactants, and their dilution by nitrogen on the laser output power were studied. The output power of 285 W was attained at chlorine flow rate of 27 mmol s -1 corresponding to chemical efficiency of 11.7 %. It was the first time when gain and laser output power were achieved in the COIL with atomic iodine generated by the proposed method.

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Section: Methodsmentioning

confidence: 99%

Section: Generation Of Atomic Iodine In Flow Of Gas Without Singlet Omentioning

confidence: 99%

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Chemical oxygen-iodine laser with a new method of atomic iodine generation

Špalek

Čenský

Jirásek

et al. 2003

Gas and Chemical Lasers and Intense Beam Applications IV

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“…Cl02 + NO -+ ClO + NO2 k8 = 3.4 x iO' (8) ClO + NO -> Cl + NO2 k9 = 1.7 x 10" e120 (9) Cl + C102 -3 2 ClO k10= 5.9 x 1O . …”

Section: Ad I)mentioning

confidence: 99%

<title>Advanced COIL based on atomic iodine generation using gaseous reactants</title>

et al. 2004

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“…Cl+Cl02-*2ClO+23kJ/mol k3=5.9x10"cm3s' (3) and is lost by a number of recombination reactions Cl + NO2 + He -> NO2C1 + He k4 = 7.2 x i0 cm6 molec2 s' (4) Cl + NO2C1 -* Cl2 + NO2 k5 = 3.0 x 10" cm3 s' (5) Cl + Cl + M -Cl2 + M k6 = 6.4 x i0 cm6 molec2 s'.…”

Section: Description Of the Modelmentioning

confidence: 99%