Download or read book Theoretical Analysis of the Hydrogen Chloride and Hydrogen Fluoride Chemical Laser Systems written by Paul A. Kittle and published by . This book was released on 1967 with total page 41 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report gives the results of gain calculations, developed by J.C. Polanyi, when applied to the hydrogen fluoride and hydrogen chloride chemical lasing systems. The details of converting existing experimental and theoretical information into data usable in the gain calculations are discussed. The computer programs are supplied in the appendix. (Author).
Download or read book A Theoretical and Experimental Investigation of the Mechanisms of the Hydrogen fluoride Pulsed Chemical Laser written by Joseph J. T. Hough and published by . This book was released on 1975 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Theoretical Investigation of Rotational Nonequilibrium Phenomena in the Pulsed Hydrogen Fluoride Laser System written by Keith Emery and published by . This book was released on 1979 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Experimental and Theoretical Study of CW Hydrogen Fluoride Chemical Laser Residual Fundamental Gain written by Panagiotis Theodoros Theodoropoulos and published by . This book was released on 1992 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A new technique that uses a multi-line probe beam to measure the gain on several lines simultaneously was developed. This new technique was used to measure the gains of the peak fundamental lines P$sb1$ (4-9) and P$sb2$(4-9) while lasing on the overtone, for three levels of media saturation. The suppression of the fundamental gains obtained at relatively high media saturation with 99.7/99.7% reflective mirrors was essentially the same as that obtained with 55% higher intracavity flux with 99.8/99.86% reflective mirrors. The gains of the low J lines P$sb1$(4-6) and P$sb2$(4-6) were suppressed 41% to 84%; the gains of the high J lines P$sb1$(7-9) and P$sb2$(7-9) were suppressed 3% to 43%. The 1 $to$ 0 lines were suppressed more than the 2 $to$ 1 lines. The maximum suppression occurred between 2 and 6 mm downstream from the nozzle exit plane, near the center of the 9 mm overtone beam. Simulation of the experiments with a rotational nonequilibrium computer model showed that the fundamental gains are determined by three independent mechanisms when lasing occurs on the overtone. First, overtone lasing decreases the gains of the P$sb1$(J) and P$sb2$(J) lines whose upper or lower levels are directly involved in P$sb{20}$(J) overtone lasing. Second, overtone lasing reduces the rate at which the low J v = 2 states are populated by rotational relaxation and increases the rate at which the low J v = 0 states are populated by rotational relaxation, resulting in suppression of the low J fundamental gains whose upper or lower levels are not directly involved in overtone lasing. Third, overtone lasing reduces the rate at which the HF(0,J) and HF(1,J) states are populated by the various collisional deactivation processes. With 10% of the original rotational relaxation rate, the computer model was in reasonable agreement with the measured zero power gain profiles. The model over predicted the fundamental gain suppression ($Deltaalpha$) for the P$sb1$(8,9) and P$sb2$(8,9) lines whose upper or lower levels were directly involved in overtone lasing, and under predicted the suppression for lines P$sb1$(4) and P$sb2$(4,5). The model predicted the suppression for lines P$sb1$(5-7) and P$sb2$(6,7) reasonably well. With the original rotational relaxation rate, the model was in reasonable agreement with the measured suppression of all P$sb1$(4-9) and P$sb2$(4-9) lines. However, with the original RR rate, the model's agreement with the experimental zero power gain profiles was not adequate.
Download or read book A Theoretical Assessment of Vibrational to Rotational Energy Exchange in the Hydrogen Fluoride Chemical Laser written by Robert Clinton Brown and published by . This book was released on 1980 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Fluoride Chemical Laser A Demonstration of Pure Chemical Pumping II New Concepts in Fast Mixing Flow Systems written by Joseph F. Spinnler and published by . This book was released on 1969 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes results of continuing experiments directed toward chemical lasers in a flow system and a single-pulse system. A new laminar diffusive-mixing system for obtaining very fast mixing rates is described. Conclusive evidence for lasing action of hydrogen fluoride in the single-pulse system is offered. Certain theoretical considerations are discussed. Fast flow velocities; fast, reproducible mixing; simple flow patterns; and fast, truly homogeneous initiation reaction have been recognized as critical factors in successfully achieving laser action in a continuous-flow hydrogen-fluorine system and several limitations inherent in the initial approach have been removed. (Author).
Download or read book Hydrogen Fluoride Chemical Laser a Demonstration of Pure Chemical Pumping written by Paul A. Kittle and published by . This book was released on 1968 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report describes two types of apparatus - a single pulse system and a flow system - used to demonstrate the phenomenon of chemical pumping. The results of experiments leading to the successful demonstration of chemical pumping are described. The comparisons between theoretical and experimental results are discussed. (Author).
Download or read book Chemical Laser Studies of Vibrational Energy Transfer in Hydrogen Chloride written by Robert Vansickle Steele and published by . This book was released on 1973 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Review of Rate Coefficients for Reactions in the H2 F2 Laser System written by Norman Cohen and published by . This book was released on 1971 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chemical and energy transfer reactions involved in the hydrogen fluoride chemical laser system are discussed. Current experimental and theoretical evidence relevant to a selection of the most probable values of rate coefficients is reviewed, and a set of best values is recommended. (Author).
Download or read book A Study of a Continuous Laser Based on Hydrogen Chloride Production in Supersonic Flow written by Knowles Arthur Overholser and published by . This book was released on 1970 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Laser Induced Chemical Reaction written by Robert Shiu Fuh Chang and published by . This book was released on 1976 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrogen Fluoride Laser Technology Study CCN written by F. N. Mastrup and published by . This book was released on 1972 with total page 313 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the course of performing the work discussed in this report, the basic feasibility of Rayleigh Scattering, Raman Scattering and Holographic Interferometry as HF/DF laser cavity diagnostic techniques was investigated. A new HF/DF chemical laser system designated CL III was designed, fabricated and underwent preliminary testing to evaluate reactant mixing of parallel, fully developed H2 and F supersonic flows in the lasing cavity and scaling to higher power while maintaining good potential for pressure recovery.
Download or read book THE Cl HBr PULSED CHEMICAL LASER A THEORETICAL AND EXPERIMENTAL STUDY written by J. Richard Airey and published by . This book was released on 1969 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt: The most powerful and efficient pulsed chemical lasers produced to date have resulted from the simple exothermic reactions between halogen atoms and hydrogen halides. These reactions have been initiated by flash photolysis. One such reaction is: Cl + HBr yields HCl + Br; -delta H = 15.5 Kcal/mole. A kinetic model has been developed for this laser system which calculates the intensity profile of the laser pulse as a function of time. The input data for the model includes estimates of the reaction rate into the specific vibrational levels of HCl and cross sections for collisional deactivation by the different chemical species in the laser medium. The theoretical model also requires as input data the photolysis flash intensity profile, the cavity geometry, and the losses. A discussion of the model is given and a comparison is made between experiment and theory. The model is able to predict quantitative variations of the laser pulse characteristics as a function of flash intensity, cavity losses, and reagent partial pressures. The quantitative calculations are in reasonable agreement with experiment. It is concluded that, (a) the most important single contribution to deactivation in the system is: HCl (V = 1) + HBr (V = O) yields HCl (V = O) + HBr (V - 1); and (b) the rate of reaction to produce HCl (V = 1) is at least as large as that to produce HCl (V = 0). (Author).
Download or read book Handbook of Chemical Lasers written by Rolf W. F. Gross and published by John Wiley & Sons. This book was released on 1976 with total page 776 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Study of Phase Equilibria in Systems Formed by Hydrogen Fluoride with Organo fluorine Compounds and Hydrogen Chloride written by M. A. Zapolskaya and published by . This book was released on 1975 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Nuclear Science Abstracts written by and published by . This book was released on 1975 with total page 640 pages. Available in PDF, EPUB and Kindle. Book excerpt:
