TITLE

A 33% efficient chemical oxygen–iodine laser with supersonic mixing of iodine and oxygen

AUTHOR(S)
Rybalkin, V.; Katz, A.; Barmashenko, B. D.; Rosenwaks, S.
PUB. DATE
June 2003
SOURCE
Applied Physics Letters;6/2/2003, Vol. 82 Issue 22, p3838
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on a highly efficient supersonic chemical oxygen–iodine laser (COIL), with supersonic mixing of iodine and oxygen. Output power exceeding 0.5 kW with chemical efficiency of ∼33% was obtained in a 5-cm gain length for Cl[sub 2] flow rate of 17 mmole/s. A 33% efficiency is the highest reported chemical efficiency of any supersonic COIL. Comparison between different mixing schemes shows that, for supersonic mixing, the output power and chemical efficiency are about 20% higher than for transonic mixing scheme. The optimal conditions for the efficient operation are investigated. © 2003 American Institute of Physics.
ACCESSION #
9885226

 

Related Articles

  • Efficient chemical oxygen-iodine laser powered by a centrifugal bubble singlet oxygen generator. Nikolaev, V. D.; Svistun, M. I.; Zagidullin, M. V.; Hager, G. D. // Applied Physics Letters;6/6/2005, Vol. 86 Issue 23, p231102 

    Efficient production of singlet delta oxygen in a bubble singlet oxygen generator (BSOG) under the influence of centrifugal acceleration, 136 g, has been obtained. An output power of 770 W with chemical efficiency of 25.6% has been achieved in a small-scale, supersonic chemical oxygen-iodine...

  • Centrifugal oxygen generator improves COIL efficiency.  // Laser Focus World;Aug2005, Vol. 41 Issue 8, p9 

    Improves the efficiency of the bubble-type singlet oxygen generator needed to produce the required singlet oxygen. Reduction of droplets in the oxygen flow; Fabrication of supersonic centrifuge-powered chemical oxygen-iodine laser; Ratio of output power to hydrogen peroxide consumption;

  • Formation and quenching mechanisms of excited particles in an oxygen-iodine laser medium. Azyazov, V. N.; Pichugin, S. Yu.; Heaven, M. // Optics & Spectroscopy;Sep2009, Vol. 107 Issue 3, p363 

    New values of a number of kinetic constants of processes proceeding in oxygen-iodine laser media are presented. The total probabilities of formation of I2( X, 15 ≤ v ≤ 24) and I2( X, 25 ≤ v ≤ 47) molecules in the course of quenching of I* atoms by I2( X) are found to be...

  • How many O2(1Δ) molecules are consumed per dissociated I2 in chemical oxygen-iodine lasers? Rybalkin, V.; Katz, A.; Waichman, K.; Vingurt, D.; Dahan, Z.; Barmashenko, B. D.; Rosenwaks, S. // Applied Physics Letters;7/10/2006, Vol. 89 Issue 2, p021115 

    Direct measurements of the dissociation of I2 molecules at the optical axis of a supersonic chemical oxygen-iodine laser (COIL) as a function of I2 flow rate were carried out. This enabled us to determine the number of consumed O2(1Δ) molecules per dissociated I2 molecule. The number depends...

  • Operation of an ICl fueled oxygen-iodine chemical laser. Wiswall, C. E.; Lilenfeld, H. V.; Bragg, S. L. // Applied Physics Letters;1984, Vol. 45 Issue 1, p5 

    cw operation of a chemical oxygen-iodine laser (COIL) using ICl as a source of atomic iodine at powers approaching 120 W is reported. The vapor pressure of ICl is higher than the vapor pressure of the more conventional I2 fuel usually used in COIL. More iodine can therefore be delivered to the...

  • Formation of I2(B3Π0) in the presence of O2(a1Δ). Azyazov, Valeriy N.; Mikheyev, Pavel A.; Ufimtsev, Nikolay I.; Fomin, Evgeny V.; Antonov, Ivan O.; Heaven, Michael C. // Journal of Applied Physics;Dec2007, Vol. 102 Issue 12, p123108 

    The mechanism by which I2(B3Π0) is excited in the chemical oxygen-iodine laser was studied by means of emission spectroscopy. Using the intensity of the O2(b1Σ,υ′=0)→O2(X3Σ,υ″=0) band as a reference, I2(B3Π0) relative number densities were assessed by...

  • High-pressure, high-efficiency operation of a chemical oxygen-iodine laser. Wani, Fumio; Endo, Masamori; Fujioka, Tomoo // Applied Physics Letters;11/15/1999, Vol. 75 Issue 20, p3081 

    Studies the high-pressure, high-efficiency operation of a chemical oxygen-iodine laser. Direct utilization in the laser cavity of singlet delta oxygen generated by a liquid-type singlet oxygen generator; Ratio of excited iodine to the ground state iodine after dissociation; Laser output as a...

  • Small-signal gain and iodine dissociation in a supersonic chemical oxygen-iodine laser with... Furman, D.; Bruins, E. // Applied Physics Letters;5/24/1999, Vol. 74 Issue 21, p3093 

    Reports on the measurements of the gain and temperature in the resonator of a supersonic chemical oxygen-iodine laser with transonic injection of iodine. Conditions corresponding to the maximum chemical efficiency; Gain as a nonmonotonous function of the iodine flow rate; Use of dependencies in...

  • Centrifugal spray generator of singlet oxygen for a chemical oxygen-iodine laser. �palek, O.; Hrub�, J.; Censk�, M.; Jir�sek, V.; Kodymov�, J. // Applied Physics B: Lasers & Optics;Sep2010, Vol. 100 Issue 4, p793 

    centrifugal spray generator of singlet oxygen, O(?), for driving a chemical oxygen-iodine laser was developed and its operation was experimentally studied. Modeling of the liquid separation from the gas flow showed that the separator designed could remove droplets larger than 0.5 �m from...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics