Chemical Lasers
The laser, an acronym for light amplification by stimulated emission of radiation, is a source of nearly monochromatic, coherent, electromagnetic radiation that propagates as a beam. The chemical laser is a type of laser system that is driven by the release of energy during a chemical reaction. Chemical lasers are usually large, high power devices that integrate chemical delivery systems, a supersonic flow apparatus, and an optical resonator.
Role of mixing in the chemical oxygen-iodine laser reactions
The thin shear-layer equations are solved for a two-dimensional parallel jet of molecular iodine I 2 , in an electronically excited, singlet-delta oxygen freestream, O 2 ( 1 Δ), in an effort to better understand the influence of mixing on the dissociation of I 2 . Comparisons of one-dimensional premixed cases with corresponding two-dimensional let-mixed cases of varying jet velocity ratios (and therefore mixing rates) indicate that, counter to common belief, imperfect mixing, which results in initial regions of high I 2 concentrations, can lead to faster dissociation
DESIGN CONSIDERATION TO PPM KLYSTRONS FOR INDUSTRIAL LINAC
Toshiba has been developing the C-band and X-band Periodic Permanent Magnet (PPM) focused klystron in collaboration with KEK and manufactured prototypes for the JLC project. [1] The PPM klystron has an advantage to enhance the total efficiency as a result of eliminating the electric power for the focusing magnet. From experience on the development the PPM focused klystrons for the JLC project, we plan to apply the PPM focused klystron to the medical and industrial linac. The periodic magnet focusing scheme has some technical difficulties such as stop band voltage. To design the PPM klystron for the medical and industrial linac, it is necessary to give heed to electron beam instability; so that the tube parameters of the PPM focused klystrons have some constraints. The size of the accelerator system is substantially reduced if a PPM focused klystron is used. The majority of medical and industrial linacs use frequencies of S-band range. We discuss the availability of the S-band PPM focused klystron in this paper.