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| Verfasst von: | Miyazaki, Akira  |
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| Titel: | Direct Measurement of the Hyperfine Structure Interval of Positronium Using High-Power Millimeter Wave Technology |
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| Verf.angabe: | by Akira Miyazaki |
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| Verlagsort: | Tokyo |
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| Verlag: | Springer |
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| Jahr: | 2015 |
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| Umfang: | Online-Ressource (XIII, 122 p. 79 illus., 53 illus. in color, online resource) |
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| Gesamttitel/Reihe: | Springer Theses, Recognizing Outstanding Ph.D. Research |
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| | SpringerLink : Bücher |
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| | Springer eBook Collection : Physics and Astronomy |
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| ISBN: | 978-4-431-55606-0 |
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| Abstract: | In this thesis, the author develops new high-power millimeter wave techniques for measuring the hyperfine structure of positronium (Ps-HFS) directly for the first time in the world. Indirect measurement of Ps-HFS in the literature might have systematic uncertainties related to the use of a static magnetic field. Development of the millimeter wave devices supports the precise determination of Ps-HFS by directly measuring the Breit-Wigner resonant transition from o-Ps to p-Ps without the magnetic field. At the same time, the width of the measured Breit-Wigner resonance directly provides the lifetime of p-Ps. This measurement is the first precise spectroscopic experiment involving the magnetic dipole transition and high-power millimeter waves. The development of a gyrotron and a Fabry-Pérot cavity is described as providing an effective power of over 20 kW, which is required to cause the direct transition from o-Ps to p-Ps. Those values measured by the newly developed millimeter wave device pave the way for examining the discrepancy observed between conventional indirect experiments on Ps-HFS and the theoretical predictions of Quantum Electrodynamics |
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| DOI: | doi:10.1007/978-4-431-55606-0 |
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| URL: | Volltext: https://doi.org/10.1007/978-4-431-55606-0 |
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| | Cover: http://swbplus.bsz-bw.de/bsz434884650cov.htm |
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| | DOI: https://doi.org/10.1007/978-4-431-55606-0 |
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| Schlagwörter: | (s)Quantenelektrodynamik / (s)Positronium / (s)Hyperfeinstruktur / (s)Gyrotron / (s)Fabry-Pérot-Resonator |
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| Datenträger: | Online-Ressource |
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| Sprache: | eng |
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| Reproduktion: | Druckausg |
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| Bibliogr. Hinweis: | Erscheint auch als : Druck-AusgabeMiyazaki, Akira: Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology. - Tokyo : Springer Verlag, Japan, 2015 |
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| K10plus-PPN: | 1657341917 |
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| Lokale URL UB: |  Zum Volltext |
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978-4-431-55606-0
Direct Measurement of the Hyperfine Structure Interval of Positronium Using High-Power Millimeter Wave Technology / Miyazaki, Akira; 2015 (Online-Ressource)
67841046
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