NCl(a1Δ) and I(52P12) production in a D/NCl3/HI transverse flow reactor

Schwenz, Richard W.; Gilbert, Julanna V.; Coombe, R. D.

doi:10.1016/0009-2614(93)89042-g

Cited by 34 publications

(17 citation statements)

References 21 publications

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“…7,8 This alternate process uses the following two mechanisms in which the hydrogen atoms first react with NCl 3 to produce NCl 2 and HCl and then with NCl 2 to produce NCl(a 1 ∆) and HCl. …”

Section: Introductionmentioning

confidence: 99%

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A study on an all gas-phase iodine laser based on NCl 3 reaction system

et al. 2008

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Numerical simulation and flow-tube experiments are conducted to understand the chemistry of the amine based all gasphase iodine laser (AGIL). The numerical simulation code developed is a one-dimensional, multiple-leaky-stream-tubes kinetics code combined with all the known rate equations to date. The validity of the code is confirmed to compare the calculated results with experimental results reported elsewhere. We find that the key reactions to achieve positive gain are the deactivation reaction of excited iodine atoms by chlorine atoms and the self annihilation reactions of NCl( 1 ∆). The order of the injection nozzles is crucial to suppress these reactions. It is shown that positive gain is possible with optimized flow rates and nozzle positions. Flow reactor experiments are conducted based on these calculations, and small signal gain is measured. The results are compared with the calculations.

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Section: Introductionmentioning

confidence: 99%

“…9,10 In this system, hydrogen atoms were produced by the reaction of hydrogen molecules with chlorine atoms and NCl(a 1 ∆) molecules were produced by two step reactions in accordance with Eqs. (7) and (8). For this purpose, chlorine atoms were produced by a microwave discharge through Cl 2 /He mixtures.…”

Section: Introductionmentioning

confidence: 99%

A study on an all gas-phase iodine laser based on NCl 3 reaction system

et al. 2008

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“…Coombe and co-workers developed an amine-based chemistry for producing NCl(a 1 ∆) which scheme dose not require any of above unfavorable species. 4,5 This alternate process uses the following two-step reactions.…”

Section: Introductionmentioning

confidence: 99%

Achievement of positive gain in the amine-based all gas-phase iodine laser system

et al. 2008

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Numerical simulation and flow-tube experiments are conducted to understand the chemistry of an amine-based all gasphase iodine laser (AGIL). The numerical simulation code developed is a one-dimensional, multiple-leaky-stream-tubes kinetics code combined with all the known rate equations to date. Using this code, we find that the key reactions to achieve positive gain are the deactivation reaction of excited iodine atoms by chlorine atoms and the self annihilation reactions of NCl( 1 ∆). The order of the injection nozzles is crucial to suppress these reactions. Flow reactor experiments are conducted based on these calculations, and small signal gain is measured. When NCl 3 is not supplied, absorption of the I( 2 P 1/2 )-I( 2 P 3/2 ) transition is observed. When NCl 3 is supplied, the absorption is decreased and the dip occasionally turns to the hump, corresponding to a small signal gain of 5×10 -3 %/cm. To our knowledge, this is the first observation of positive small signal gain of the amine-based AGIL system.

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“…There are at least three ways to produce the energy carrier NCl(a): the thermal decomposition or photo-dissociation of ClN 3 [13][14][15][16][17][18][19], the reaction of HN 3 and Cl atoms [2][3][4][8][9][10][11][12] and the reaction of NCl 3 and H atoms [20][21][22][23][24]. The positive gain and demonstration of lasing at 1315nm have been obtained with the latter two methods to generate NCl(a).…”

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confidence: 98%

Experimental study on supersonic all gas-phase iodine laser driven by NF₃/D₂/DCl/CF₃I combustion

Tang

Duo

et al. 2013

XIX International Symposium on High-Power Laser Systems and Applications 2012

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A supersonic all gas-phase iodine laser driven by NF 3 /D 2 /DCl/CF 3 I combustion has been experimentally studied. the gain signals of I( 2 P 3/2 ,F=4)← I( 2 P 1/2 ,F=3) at 1315.246nm and I( 2 P 3/2 ,F=3)← I( 2 P 1/2 ,F=3) at 1315.222nm were observed with an intensity of 3x10 -5 cm -1 and 1x10 -5 cm -1 respectively. The small signal gain of I( 2 P 3/2 ,F=4)← I( 2 P 1/2 ,F=3) at different location relative to HN 3 injector along the flow direction also was obtained. The experimental results indicate that the AGIL driven by NF 3 /D 2 /DCl/CF 3 I combustion is feasible.

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NCl(a1Δ) and I(52P12) production in a D/NCl3/HI transverse flow reactor

Cited by 34 publications

References 21 publications

A study on an all gas-phase iodine laser based on NCl 3 reaction system

A study on an all gas-phase iodine laser based on NCl 3 reaction system

Achievement of positive gain in the amine-based all gas-phase iodine laser system

Experimental study on supersonic all gas-phase iodine laser driven by NF₃/D₂/DCl/CF₃I combustion

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NCl(a1Δ) and I(52P12) production in a D/NCl3/HI transverse flow reactor

Cited by 34 publications

References 21 publications

A study on an all gas-phase iodine laser based on NCl 3 reaction system

A study on an all gas-phase iodine laser based on NCl 3 reaction system

Achievement of positive gain in the amine-based all gas-phase iodine laser system

Experimental study on supersonic all gas-phase iodine laser driven by NF3/D2/DCl/CF3I combustion

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Experimental study on supersonic all gas-phase iodine laser driven by NF₃/D₂/DCl/CF₃I combustion