Efficient chemical oxygen — iodine laser with a high total pressure of the active medium

Загидуллин, М. В.; Николаев, В. Д.; Svistun, M I; Khvatov, N A; Heiger, G D; Madden, Timothy J.

doi:10.1070/qe2001v031n01abeh001886

Cited by 17 publications

(9 citation statements)

References 6 publications

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“…Therefore, high diffuser efficiency is not expected [6]. We are now exploring 'Ejector-COIL' which can deliver high-pressure recovery [7,8].…”

Section: High Presure Supersonic Coilmentioning

confidence: 96%

Technical progress in industrial COIL

Tei¹,

Sugimoto²,

Ito³

et al. 2005

SPIE Proceedings

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Chemical oxygen-iodine laser (COIL) has a great potential for applications such as decommissioning and dismantlement (D&D) of nuclear reactor, rock destruction and removal and extraction of a natural resource (Methane hydrate) because of the unique characteristics such as power scalability, high optical beam quality and optical fiber beam. Five-kilowatt Chemical oxygen-iodine laser (COIL) test facility has been developed. The chemical efficiency of 27% has been demonstrated with a moderate beam quality for optical fiber coupling. Our research program contains conventional/ejector-COIL scheme, Jet-SOG/Mist-SOG optimization, fiber delivery and long-term operation.

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“…Therefore, high diffuser efficiency is not expected [6]. We are now exploring 'Ejector-COIL' which can deliver high-pressure recovery [7,8].…”

Section: High Presure Supersonic Coilmentioning

confidence: 96%

Technical progress in industrial COIL

Tei¹,

Sugimoto²,

Ito³

et al. 2005

SPIE Proceedings

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“…Different types of ejector nozzles have been proposed. Nikolaev et al used under-expansion high-pressure nitrogen flow to produce laser gas [1,2]. A relatively large nitrogen flow (7-11 times that of oxygen) is necessary in order to achieve 80-100 Torr of cavity Pitot pressure, because the design point of the nitrogen stagnation pressure is lower (approximately 2-5 atms) than a nitrogen condensation limit.…”

Section: Introductionmentioning

confidence: 99%

Ejector COIL with supersonic nozzle bank based on trip-jet mixing system

Tei

Hirioka

Shiho

et al. 2006

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

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Nozzle banks for an ejector-chemical oxygen-iodine laser consisting of two-dimensional slit nozzles with a trip-jet mixing system were tested in the cold-and hot-flow operation regimes. Horizontal Pitot scan experiments demonstrated that the mixing ability of the trips is excellent. The Mach number of the mixed flow was approximately 3. The gain measurements were conducted, and the results of measurements revealed that the maximum gain was around 0.6%/cm. The gain cut-off length was more than 200mm. The lasing experiments were also conducted, and the power was about 3kW at the chemical efficiency of about 20%.

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“…Nikolaev et al used under-expansion high-pressure nitrogen flow to produce laser gas. 1,2) A relatively large nitrogen flow (7 to 11 times that of oxygen) is necessary in order to achieve 80 -100 Torr of cavity Pitot pressure, because the design point of the nitrogen stagnation pressure is lower (approximately 2 -5 atm) than the nitrogen condensation limit. In order to increase the nitrogen stagnation pressure, Yang et al used a strategy whereby their nozzle bank is based on two-dimensional slit nozzles, which can minimize the total pressure loss, with mixing enhancement tabs mounted at the nozzle exit plane (NEP).…”

Section: Introductionmentioning

confidence: 99%

Ejector Chemical Oxygen–Iodine Laser with Supersonic Nozzle Bank Based on a Trip-Jet Mixing System

Tei

Horioka

Nakajima

et al. 2008

jjap

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Motivated by application to quantum physics, anticommuting analogues of Wiener measure and Brownian motion are constructed. The corresponding Itô integrals are defined and the existence and uniqueness of solutions to a class of stochastic differential equations is established. This machinery is used to provide a Feynman-Kac formula for a class of Hamiltonians. Several specific examples are considered.

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Efficient chemical oxygen — iodine laser with a high total pressure of the active medium

Cited by 17 publications

References 6 publications

Technical progress in industrial COIL

Technical progress in industrial COIL

Ejector COIL with supersonic nozzle bank based on trip-jet mixing system

Ejector Chemical Oxygen–Iodine Laser with Supersonic Nozzle Bank Based on a Trip-Jet Mixing System

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