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Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology[electronic resource] /

紀錄類型:	書目-語言資料,印刷品 : Monograph/item
杜威分類號:	539.7214
書名/作者:	Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology/ by Akira Miyazaki.
作者:	Miyazaki, Akira.
出版者:	Tokyo : : Springer Japan :, 2015.
面頁冊數:	xiii, 122 p. : : ill., digital ;; 24 cm.
Contained By:	Springer eBooks
標題:	Positronium.
標題:	Hyperfine structure.
標題:	Physics.
標題:	Nuclear Physics, Heavy Ions, Hadrons.
標題:	Atomic/Molecular Structure and Spectra.
標題:	Measurement Science and Instrumentation.
ISBN:	9784431556060 (electronic bk.)
ISBN:	9784431556053 (paper)
內容註:	Introduction -- Experiment -- Analysis -- Discussion -- Conclusion.
摘要、提要註:	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-Perot 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.
電子資源:	http://dx.doi.org/10.1007/978-4-431-55606-0

Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology[electronic resource] /
Miyazaki, Akira.

Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology[electronic resource] /by Akira Miyazaki. - Tokyo :Springer Japan :2015. - xiii, 122 p. :ill., digital ;24 cm. - Springer theses,2190-5053. - Springer theses..

Introduction -- Experiment -- Analysis -- Discussion -- Conclusion.

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-Perot 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.

ISBN: 9784431556060 (electronic bk.)

Standard No.: 10.1007/978-4-431-55606-0doiSubjects--Topical Terms:

627817
Positronium.

LC Class. No.: QC793.5.P62

Dewey Class. No.: 539.7214

Direct measurement of the hyperfine structure interval of positronium using high power millimeter wave technology[electronic resource] /
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