Download or read book Study of a TEA Hydrogen Fluoride Chemical Laser written by Ernest Lloyd Frohring and published by . This book was released on 1973 with total page 76 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 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 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 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 New Infrared Chemical Laser Emission from Hydrogen Fluoride and Other Gases written by Leo David Geoffrion and published by . This book was released on 1971 with total page 84 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 Pulsed Hydrogen Fluoride Overtone Chemical Laser Studies written by and published by . This book was released on 1993 with total page 79 pages. Available in PDF, EPUB and Kindle. Book excerpt: An experimental study of HF chemical lasers operating on overtone transitions, OTs, in a photolytically initiated, pulsed laser facility was conducted. The primary objective was to obtain comparisons of the specific energy performance of pulsed HF, chain reaction driven, chemical laser resonators when operating only on fundamental transitions, delta V = 1, and only on first overtone transitions, delta V = 2. The initial efforts were the buildup of the experimental test facility with which excellent performance as an FT HF laser was demonstrated. However, attempts to produce OT lasing using lamda- variable reflectivity mirror coatings (to promote and suppress, simultaneously, the OT and FT mechanisms) were only marginally successful, even though major facility modifications were made to reduce cavity losses, suppress FT superradiance (ASE), suppress parasitic modes and increase pulse duration. Finally, CW OT lasing was demonstrated using the OT optical components in a combustion-driven, blowdown test facility. A specific energy level, sigma = 266 w/gm/sec, was inferred from the measurements. HF Chemical lasers, HF Overtone lasers, Pulsed photolytically initiated chemical lasers.
Download or read book Hydrogen Fluoride Overtone Chemical Laser Technology written by William A. Duncan and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 Chemical Laser Studies of Vibrational Energy Distribution in HF Formed by Elimination from Chemically Activated Molecules written by Thomas Douglas Padrick and published by . This book was released on 1971 with total page 226 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 Laser Induced Vibrational Fluorescence Studies of Vibrational Energy Transfer in Hydrogen Fluoride written by Gregory Michael Jursich and published by . This book was released on 1982 with total page 588 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Parametric Study of a Hydrogen Flouride sic Chemical Laser written by Steven Ira Zabinsky and published by . This book was released on 1976 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Masters Theses in the Pure and Applied Sciences written by Wade H. Shafer and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by TPRC at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dissemina tion phases of the activity was transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we have concluded that it will be in the interest of all concerned if the printing and distribution of the volume were handled by a well-known publishing house to assure improved service and better communication. Hence, effective with this Volume 18, Masters Theses in the Pure and Applied Sciences will be disseminated on a worldwide basis by Plenum Publishing Corporation of New York. All back issues can also be ordered from Plenum. As we embark on this new partnership with Plenum, we also initiate a new venture in that this important annual reference work now covers Canadian universities as well as those in the United States. We are sure that this broader base will greatly enhance the value of these volumes.
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1981 with total page 1370 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
