Inverse resonance absorption in an inhomogeneous magnetized plasma. BARR, H. C. ; BOYD, T. J. M. ; GARDNER, G. A. (University of Wales, Bangor, Wales); RANKIN, R. (Alberta, University, Edmonton, Canada; University of Wales, Bangor, Wales) Physics of Fluids (ISSN 0031-9171), vol. 28, Jan. 1985, p. 16-18. Research supported by the Science and Engineering Research Council of England. 13 Refs. Language: Eng1ish. Country of Origin: United Kingdom. Country of Publication: United States Document Type: JOURNAL. ARTICLE Most documents available from AIAA Technical Library Journa1 Announcement: IA A8509 The linear mode conversion of a plasma wave to a light, wave in a magnetized plasma has been examined theoretically and by computer simulation. This conversion is the inverse of resonance absorption exhibiting an identical dependence on magnetic field and density scale length with an optimum conversion efficiency of approximately 60 percent. Radiation from this source may contribute? to the harmonic spectra observed from laser- irradiated plasmas. (Author) Sour c e of Ab st ract (Sub file): AIAA/TIS Keywords: *ELECTROMAGNETIC ABSORPTION; *LASER PLASMA INTERACTIONS; *N0NUNIF0RM PLASMAS; *PLASMA RESONANCE; ♦PLASMA WAVES; ENERGY CONVERSION EFFICIENCY; IONOSPHERIC PROPAGATION; MODE TRANSFORMERS; PLASMA SPECTRA Subject Classification: 7575 Plasma Physics (1975--) Eigenvalues of rotating machinery. Ph.D. Thesis. MURPHY, B. T. Texas A?<M Univ., College Station. Corp. Sourc e Code: TQ431621 1984. 230P. L a n g u a g e: E n g 1 i s h . Country of Origin: United States. Country of Publication: U n i t e d S t a t e s Document Type: THESIS Most documents available? from AIAA Technical Library Other Availability: Univ. Microfilms Order No. DA8419858 Journal Announcement: STAR8508 The current industry standard for 1inear eigenana1ysis for vibration of rotating machinery is the transfer matrix method. This is true for both lateral and torsional vibration. Lateral vibration computer codes based on this method are subject to a variety of convergence problems including computing eigenvalues in random order, incomplete convergence on some, missing some altogether and a poor capability to compute many roots to try to ensure that none of importance are missed. A method of calculation is presented which overcomes these problems. A technique is derived by which transfer matrices are used to compute the? coefficients of the system's characteristic polynomial. The eigenvalues are the roots of this polynomial. Whi1e ov ercom i n g con verg e nce prob1ems, the method also entails a tremendous increase in execution speed, making it
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