The sub-THz direct spectroscopy of positronium hyperfine splitting

A. Miyazaki; T. Yamazaki; T. Suehara; T. Namba; S. Asai; T. Kobayashi; H. Saito; Y. Tatematsu; I. Ogawa; T. Idehara

doi:10.1088/1742-6596/443/1/012002

The sub-THz direct spectroscopy of positronium hyperfine splitting

A. Miyazaki, T. Yamazaki, T. Suehara, T. Namba, S. Asai, T. Kobayashi, H. Saito, Y. Tatematsu, I. Ogawa, T. Idehara

Research output: Contribution to journal › Conference article › peer-review

1 Citation (Scopus)

Abstract

The positronium hyperfine splitting is a good target to study Quantum Electrodynamics in the bound state. There is a discrepancy between precision measurements and a theoretical calculation. We are planning to directly measure the positroinum hyperfine structure for the first time. A gyrotron oscillator is used as a novel radiation source in terahertz region. A Fabry-Pérot resonator is also developed to increase photon density. We have already observed the direct transition at 202.9 GHz. The direct measurement of the order of 100 ppm will be performed within about a year.

Original language	English
Article number	012002
Journal	Journal of Physics: Conference Series
Volume	443
Issue number	1
DOIs	https://doi.org/10.1088/1742-6596/443/1/012002
Publication status	Published - 2013
Externally published	Yes
Event	16th International Conference on Positron Annihilation, ICPA 2012 - Bristol, United Kingdom Duration: Aug 19 2012 → Aug 24 2012

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

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10.1088/1742-6596/443/1/012002

Cite this

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title = "The sub-THz direct spectroscopy of positronium hyperfine splitting",

abstract = "The positronium hyperfine splitting is a good target to study Quantum Electrodynamics in the bound state. There is a discrepancy between precision measurements and a theoretical calculation. We are planning to directly measure the positroinum hyperfine structure for the first time. A gyrotron oscillator is used as a novel radiation source in terahertz region. A Fabry-P{\'e}rot resonator is also developed to increase photon density. We have already observed the direct transition at 202.9 GHz. The direct measurement of the order of 100 ppm will be performed within about a year.",

author = "A. Miyazaki and T. Yamazaki and T. Suehara and T. Namba and S. Asai and T. Kobayashi and H. Saito and Y. Tatematsu and I. Ogawa and T. Idehara",

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doi = "10.1088/1742-6596/443/1/012002",

language = "English",

volume = "443",

journal = "Journal of Physics: Conference Series",

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TY - JOUR

T1 - The sub-THz direct spectroscopy of positronium hyperfine splitting

AU - Miyazaki, A.

AU - Yamazaki, T.

AU - Suehara, T.

AU - Namba, T.

AU - Asai, S.

AU - Kobayashi, T.

AU - Saito, H.

AU - Tatematsu, Y.

AU - Ogawa, I.

AU - Idehara, T.

PY - 2013

Y1 - 2013

N2 - The positronium hyperfine splitting is a good target to study Quantum Electrodynamics in the bound state. There is a discrepancy between precision measurements and a theoretical calculation. We are planning to directly measure the positroinum hyperfine structure for the first time. A gyrotron oscillator is used as a novel radiation source in terahertz region. A Fabry-Pérot resonator is also developed to increase photon density. We have already observed the direct transition at 202.9 GHz. The direct measurement of the order of 100 ppm will be performed within about a year.

AB - The positronium hyperfine splitting is a good target to study Quantum Electrodynamics in the bound state. There is a discrepancy between precision measurements and a theoretical calculation. We are planning to directly measure the positroinum hyperfine structure for the first time. A gyrotron oscillator is used as a novel radiation source in terahertz region. A Fabry-Pérot resonator is also developed to increase photon density. We have already observed the direct transition at 202.9 GHz. The direct measurement of the order of 100 ppm will be performed within about a year.

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DO - 10.1088/1742-6596/443/1/012002

M3 - Conference article

AN - SCOPUS:84881041559

SN - 1742-6588

VL - 443

JO - Journal of Physics: Conference Series

JF - Journal of Physics: Conference Series

IS - 1

M1 - 012002

T2 - 16th International Conference on Positron Annihilation, ICPA 2012

Y2 - 19 August 2012 through 24 August 2012

ER -

The sub-THz direct spectroscopy of positronium hyperfine splitting

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