Flow tube studies of NCl 3 reactions

McDermott, William E.; Coombe, R. D.; Gilbert, Julanna V.; Lambert, Zane; Heldt, Mikailia

doi:10.1117/12.537742

Cited by 13 publications

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“…These equations and rates were cited mainly from Ref. [9], which is the only publication available concerning the amine based AGIL system. However, the aforementioned publication lacks some important rates, namely, the dimole annihilation reactions of NCl(a 1 ∆), therefore we supplemented them from the comprehensive rate equation set of the azide based AGIL, Ref.…”

Section: ·S] P(x T) Is the Intensity Of The Resonant Modementioning

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).…”

Section: Introductionmentioning

confidence: 99%

“…(7) to (9), hydrogen atoms are needed not only to produce NCl(a 1 ∆) but also to produce iodine atoms. Therefore, in the PSI apparatus, hydrogen atoms were produced by a microwave discharge through H 2 /He mixtures to supply excess H atoms.…”

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: ·S] P(x T) Is the Intensity Of The Resonant Modementioning

confidence: 99%

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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“…6,7 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. (2) and (3).…”

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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“…The all gas-phase iodine laser (AGIL) − is a laser device that produces an inversion on the 1315 nm spin orbit transition of atomic iodine via near resonant energy transfer between electronically excited molecule, NCl(a), and ground-state iodine atom. NCl ( a ) + I → NCl ( X ) + I * …”

Section: Introductionmentioning

confidence: 99%

Combustion Parametric Optimization for All Gas-Phase Iodine Laser Driven by D₂/NF₃/DCl Combustion and Self-Pooling of NCl(a) Catalyzed by NF(a)/NF(b)

et al. 2009

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Combustion parametric optimization for all gas-phase iodine laser driven by D(2)/NF(3)/DCl combustion was performed, and an energy transfer channel called self-pooling of NCl(a) catalyzed by NF(a)/NF(b) was presented. The results show that a flow rate ratio of NF(3) and D(2) of 0.8 to 1.5 and DCl and D(2) of >1.5 is necessary for high efficiency of Cl atoms generation. The results also show that NF(a) and NF(b) from the reaction of HN(3) and residual F atoms or from the D(2)/NF(3) combustion have a serious effect on the generation and transport of NCl(a) via the NF(a) direct quenching of NCl(a) or via the catalysis of NF(a)/NF(b) on NCl(a) self-pooling. The generation of NF can be avoided if sufficient DCl was used and the NF(3)/D(2) flow rate ratio was properly controlled.

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Flow tube studies of NCl 3 reactions

Cited by 13 publications

References 0 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

Combustion Parametric Optimization for All Gas-Phase Iodine Laser Driven by D₂/NF₃/DCl Combustion and Self-Pooling of NCl(a) Catalyzed by NF(a)/NF(b)

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Flow tube studies of NCl 3 reactions

Cited by 13 publications

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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

Combustion Parametric Optimization for All Gas-Phase Iodine Laser Driven by D2/NF3/DCl Combustion and Self-Pooling of NCl(a) Catalyzed by NF(a)/NF(b)

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Combustion Parametric Optimization for All Gas-Phase Iodine Laser Driven by D₂/NF₃/DCl Combustion and Self-Pooling of NCl(a) Catalyzed by NF(a)/NF(b)