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Cyclotron wave propagation along the magnetic field in a transient plasmaMoy, Alfred Kin-Kwok, January 1969 (has links)
Thesis (M.S.)--University of Wisconsin--Madison, 1969. / eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Electron cyclotron emission measurements of coherent and broadband density fluctuations in the Alcator C-Mod tokamakLynn, Alan Gene, Gentle, Kenneth W., January 2004 (has links) (PDF)
Thesis (Ph. D.)--University of Texas at Austin, 2004. / Supervisor: Kenneth W. Gentle. Vita. Includes bibliographical references.
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Proton cyclotron echo: a phenomenon of wave-wave and wave-particle interactions in topside sounding of the ionosphereChen, Guang-Ming 09 July 2018 (has links)
Proton cyclotron echoes are phenomena related to the proton cyclotron frequency
discovered On topside sounder swept-frequency ionograms from the Canadian
satellite Alouette II in 1969. Subsequent studies were also limited to the
use of the swept-frequency ionograms and devoted only to these so called regular
proton cyclotron echoes. The regular proton cyclotron echoes occur on the
swept-frequency ionograms at constant apparent ranges predominantly at frequencies
below the electron plasma frequency fN and slightly above the electron
cyclotron frequency fH. In this dissertation over 2000 topside sounder ionograms
(both swept-frequency mode and fixed-frequency mode) obtained from
the Alouette II, ISIS I and II satellites of the Alouette-ISIS program are used
to investigate proton cyclotron echoes in detail.
Examination of the combined swept-frequency and fixed ionograms indicates
that the proton cyclotron echoes are also observed on the fixed-frequency ionograms,
In addition to some features, such as constant apparent ranges and
higher order multiple echoes, which have been already observed on the swept frequency
ionograms and also occur on the fixed-frequency ionograms, under
some Conditions non-constant apparent ranges and modulations in intensity of
the proton cyclotron echoes on the fixed-frequency ionograms are observed.
Usually the proton cyclotron echoes on the fixed-frequency ionogram can
be observed for a much longer time than on the swept-frequency ionograms
due to the fixed sounding frequencies. A proton cyclotron echo can be under
observation for several spin periods of the satellite if the plasma parameters
encountered by the sounder are appropriate, The modulation in intensity of the
proton cyclotron echo by antenna orientation is evident. In terms of analysis of
the combined swept-frequency and fixed-frequency ionograms, and the satellite
orbital parameters and spin axis attitude, effects on proton cyclotron echoes of
antenna orientation with respect to the earth’s magnetic field are examined. It
is found that higher intensity and higher harmonics of proton cyclotron echoes
occur when the sounding antenna is parallel to the earth’s magnetic field.
A new class of proton cyclotron echoes was discovered, which occur on electron
plasma resonances. The proton cyclotron echoes on the fH, nfH (n = 2, 3, 4), fQ3 and fD have been observed- The first three are checked in more detail.
The proton cyclotron echoes observed on the fH, 4fH, fQ3 and fD resonances
exhibit doublet, on the 2fH resonance triplex and on 3fH resonance single while
the regular proton cyclotron echoes are always single. A frequency difference of
about 5-10 Hz exists between subechoes in a doublet or triplex. The regular
proton cyclotron echo seems to correspond to the first echo of the double or
triple proton cyclotron echoes. No echo minus exists and most proton cyclotron
echoes on the electron plasm a resonances are observed at dip angles whose magnitudes
are less than 8°. This new class of proton cyclotron echoes is attributed
to the results of nonlinear interactions of ion and electron Bernstein waves or ion
Bernstein waves and DKO mode electromagnetic waves (for the fH resonance).
Absorption phenomena on the 3fH, 4fH and fQ3 resonance spikes near the proton
cyclotron period on swept-frequency ionograms are observed occasionally,
but not yet understood.
A theory based on nonlinear interaction of two waves is suggested to interpret
proton cyclotron echoes. Many observational features of proton cyclotron echoes
can be interpreted by this nonlinear interaction model of two waves. / Graduate
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Desenvolvimento de um metodo de preparacao de um tracador de estanho, o sup[117m]Sn, a partir da irradiacao de estanho natural com feixe de protons do Ciclotron do IPENMORAES, VANESSA 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:41Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:41Z (GMT). No. of bitstreams: 1
06873.pdf: 3893215 bytes, checksum: 6d198b442dc331f7ee99c5eb2cd23c10 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Desenvolvimento de um metodo de preparacao de um tracador de estanho, o sup[117m]Sn, a partir da irradiacao de estanho natural com feixe de protons do Ciclotron do IPENMORAES, VANESSA 09 October 2014 (has links)
Made available in DSpace on 2014-10-09T12:25:41Z (GMT). No. of bitstreams: 0 / Made available in DSpace on 2014-10-09T14:03:41Z (GMT). No. of bitstreams: 1
06873.pdf: 3893215 bytes, checksum: 6d198b442dc331f7ee99c5eb2cd23c10 (MD5) / Dissertacao (Mestrado) / IPEN/D / Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP
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Surveys in preparation for the commissioning of the TRIUMF magnetGibb, Robert A. January 1972 (has links)
This thesis was concerned with work in preparation for the commissioning of the TRIUMF cyclotron magnet. The experiments were centred around a 1/10 scale model of the cyclotron magnet. Computer calculation and model measurements were made of a model combination magnet. Extraction fields of the cyclotron were measured and the stripping foil locus determined. The interaction of the cyclotron magnet and the combination magnet was determined.
A 1/10 scale model Triple Hall Probe was constructed and precisely calibrated. Its performance was tested and surveys made in the model.
Finally the characteristics of the trim coils to be used in the cyclotron were measured. / Science, Faculty of / Physics and Astronomy, Department of / Graduate
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Special features of cyclotron, synchrotron and Čerenkov radiations in anisotropic plasmas梁寶鎏, Leung, Po-lau. January 1989 (has links)
published_or_final_version / Physics / Doctoral / Doctor of Philosophy
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ECE radiation analysis of the Hall thrusterKim, Minkyu, 1970- 29 August 2008 (has links)
Not available
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ECE radiation analysis of the Hall thrusterKim, Minkyu, January 1900 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2007. / Vita. Includes bibliographical references.
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Special features of cyclotron, synchrotron and Čerenkov radiations in anisotropic plasmas /Leung, Po-lau. January 1989 (has links)
Thesis (Ph. D.)--University of Hong Kong, 1990.
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