[Download] "Direct Measurement of the Hyperfine Structure Interval of Positronium Using High-Power Millimeter Wave Technology" by Akira Miyazaki * eBook PDF Kindle ePub Free

📘 Read Now     📥 Download

eBook details

• Title: Direct Measurement of the Hyperfine Structure Interval of Positronium Using High-Power Millimeter Wave Technology
• Author : Akira Miyazaki
• Release Date : January 01, 2015
• Genre: Physics,Books,Science & Nature,Professional & Technical,Engineering,
• Pages : * pages
• Size : 4711 KB

Description

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.

Free Books Download "Direct Measurement of the Hyperfine Structure Interval of Positronium Using High-Power Millimeter Wave Technology" PDF ePub Kindle