Oxygen—iodine ejector laser with a centrifugal bubbling singlet-oxygen generator

Загидуллин, М. В.; Николаев, В. Д.; Svistun, M I; Khvatov, N A

doi:10.1070/qe2005v035n10abeh013010

Cited by 11 publications

(8 citation statements)

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“…small scale COILs, where O 2 ( 1 ∆) yield upstream nozzle bank is higher that 50% 8,9 . A further tests of COIL powered by CBSOG showered that chemical efficiency ~26% didn't depend on the chlorine molar flow rate in the range 33÷56 mmole/s 6,7 . The gain medium flow of the ejector COIL had static pressure ~9 torr, the Pitot pressure ~60 torr and small signal gain higher than 1% cm -1 when the chlorine molar flow rate of 56 mmole/s, primary helium of 90 mmole/s, the driver nitrogen molar flow rate of 250 mmole/s, secondary helium of 60 mmole/s, molecular iodine of 1 mmole/s were supplied to COIL system.…”

Section: Performance Of Ejector Coil Powered By Cbsogmentioning

confidence: 98%

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Performance of high pressure COIL with centrifugal bubble singlet oxygen generator

Загидуллин

Николаев

Khvatov

et al. 2006

XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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A centrifugal bubbling SOG is a perspective source of oxygen at high pressure with high depletion of the BHP in the single burn dawn. The theoretical estimations show that at high centrifugal acceleration gas-liquid contact specific surface 30cm -1 , frequency of the surface renewal can less than 10 -3 s and bubble rise velocity up to 500 cm/s be realized in the bubble SOG. The results of the measurements of O 2 ( 1 ∆) yield, chlorine utilization and water fraction at the exit of the centrifugal bubble SOG are presented. A high O 2 ( 1 ∆) yield and chlorine utilization higher than 90% have been obtained at chlorine gas loading up to 6 mmole/s per 1 cm 2 of the bubbler surface. The ejector COIL powered by centrifugal bubbling SOG demonstrated ~25% of chemical efficiency with specific power 6 kW per 1 litre/s of the BHP volumetric rate.

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Section: Performance Of Ejector Coil Powered By Cbsogmentioning

confidence: 98%

“…The CBSOG was connected to the ejector nozzle banks of COIL, as described in papers 6,7 . These ejector nozzle banks enable to generate gain medium flow with gain higher 10 -2 cm -1 and potential recovered pressure up to 100 torr.…”

Section: Performance Of Ejector Coil Powered By Cbsogmentioning

confidence: 99%

Performance of high pressure COIL with centrifugal bubble singlet oxygen generator

Загидуллин

Николаев

Khvatov

et al. 2006

XVI International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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“…Also for small size powerful SOG it is necessary to generate oxygen flux from the bubbling surface as high as possible without substantial carry-over of liquid fraction into the effluent gas. An efficient COIL operation powered by CBSOG was firstly demonstrated in papers 4,5 . The principle scheme of the centrifugal bubbling SOG is shown in The outer non-rotating cylindrical housing contains the rotary bubbler (black marked).…”

Section: Advaced Singlet Oxygen Generatormentioning

confidence: 99%

Advanced singlet oxygen generator and nozzle bank in traditional COIL technology

Загидуллин

Николаев

Khvatov

et al. 2007

International Conference on Lasers, Applications, and Technologies 2007: High-Power Lasers and Applications

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A centrifugal bubbling SOG generated gas flow with partial oxygen pressure up to 40 torr at singlet oxygen yield about 60% and residual chlorine less than 10%. At initial BHP temperature 260K and ratio of chlorine molar flow rate to BHP volumetric rate of 1mole/litre the output BHP temperature was 290K and water vapor fraction relative to the oxygen was 15%. An oxygen flux up to 6 mmole/s per 1 cm 2 of the bubbler surface has been attained. An ejector nozzle bank generates gain medium flow at Mach number ~2 and temperature lower 200K with small signal gain higher 1%/cm. Ejector COIL powered by centrifugal bubbling SOG demonstrated ~25% of chemical efficiency with specific power 6 kW per 1 litre/s of BHP volumetric rate.

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“…To provide fast mixing of iodine and oxygen streams small-scale channels in the OIL mixing units had been used 7,[28][29][30][31][32][33] . In this case the loss of iodine atoms in the processes (2) and (3) during transportation through small-scale channels can be significant.…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous losses of externally generated I atoms for OIL

Torbin

Mikheyev

Ufimtsev

et al. 2013

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

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Usage of an external iodine atom generator can improve energy efficiency of the oxygen-iodine laser (OIL) and expand its range of operation parameters. However, a noticeable part of iodine atoms may recombine or undergo chemical bonding during transportation from the generator to the injection point. Experimental results reported in this paper showed that uncoated aluminum surfaces readily bounded iodine atoms, while nickel, stainless steel, Teflon or Plexiglas did not. Estimations based on experimental results had shown that the upper bound of probability of surface iodine atom recombination for materials Teflon, Plexiglas, nickel or stainless steel is γ rec ≤ 10 -5 .

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Oxygen—iodine ejector laser with a centrifugal bubbling singlet-oxygen generator

Cited by 11 publications

References 1 publication

Performance of high pressure COIL with centrifugal bubble singlet oxygen generator

Performance of high pressure COIL with centrifugal bubble singlet oxygen generator

Advanced singlet oxygen generator and nozzle bank in traditional COIL technology

Heterogeneous losses of externally generated I atoms for OIL

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