Direct observation of the hyperfine transition of ground-state positronium

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

研究成果: ジャーナルへの寄稿記事

52 引用 (Scopus)

抄録

We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 10kW power using a gyrotron, a mode converter, and a Fabry-Pérot cavity. The hyperfine transition has been observed with a significance of 5.4 standard deviations. The transition probability is measured to be A=3.1-1.2+1.6×10 -8s -1 for the first time, which is in good agreement with the theoretical value of 3.37×10 -8s -1.

元の言語英語
記事番号253401
ジャーナルPhysical Review Letters
108
発行部数25
DOI
出版物ステータス出版済み - 6 20 2012

Fingerprint

positronium
ground state
hyperfine structure
transition probabilities
converters
standard deviation
cavities

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

これを引用

Yamazaki, T., Miyazaki, A., Suehara, T., Namba, T., Asai, S., Kobayashi, T., ... Sabchevski, S. (2012). Direct observation of the hyperfine transition of ground-state positronium. Physical Review Letters, 108(25), [253401]. https://doi.org/10.1103/PhysRevLett.108.253401

Direct observation of the hyperfine transition of ground-state positronium. / Yamazaki, T.; Miyazaki, A.; Suehara, T.; Namba, T.; Asai, S.; Kobayashi, T.; Saito, H.; Ogawa, I.; Idehara, T.; Sabchevski, S.

:: Physical Review Letters, 巻 108, 番号 25, 253401, 20.06.2012.

研究成果: ジャーナルへの寄稿記事

Yamazaki, T, Miyazaki, A, Suehara, T, Namba, T, Asai, S, Kobayashi, T, Saito, H, Ogawa, I, Idehara, T & Sabchevski, S 2012, 'Direct observation of the hyperfine transition of ground-state positronium', Physical Review Letters, 巻. 108, 番号 25, 253401. https://doi.org/10.1103/PhysRevLett.108.253401
Yamazaki, T. ; Miyazaki, A. ; Suehara, T. ; Namba, T. ; Asai, S. ; Kobayashi, T. ; Saito, H. ; Ogawa, I. ; Idehara, T. ; Sabchevski, S. / Direct observation of the hyperfine transition of ground-state positronium. :: Physical Review Letters. 2012 ; 巻 108, 番号 25.
@article{185e994f075e48b5ba54d6f6674ea411,
title = "Direct observation of the hyperfine transition of ground-state positronium",
abstract = "We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 10kW power using a gyrotron, a mode converter, and a Fabry-P{\'e}rot cavity. The hyperfine transition has been observed with a significance of 5.4 standard deviations. The transition probability is measured to be A=3.1-1.2+1.6×10 -8s -1 for the first time, which is in good agreement with the theoretical value of 3.37×10 -8s -1.",
author = "T. Yamazaki and A. Miyazaki and T. Suehara and T. Namba and S. Asai and T. Kobayashi and H. Saito and I. Ogawa and T. Idehara and S. Sabchevski",
year = "2012",
month = "6",
day = "20",
doi = "10.1103/PhysRevLett.108.253401",
language = "English",
volume = "108",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "25",

}

TY - JOUR

T1 - Direct observation of the hyperfine transition of ground-state positronium

AU - Yamazaki, T.

AU - Miyazaki, A.

AU - Suehara, T.

AU - Namba, T.

AU - Asai, S.

AU - Kobayashi, T.

AU - Saito, H.

AU - Ogawa, I.

AU - Idehara, T.

AU - Sabchevski, S.

PY - 2012/6/20

Y1 - 2012/6/20

N2 - We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 10kW power using a gyrotron, a mode converter, and a Fabry-Pérot cavity. The hyperfine transition has been observed with a significance of 5.4 standard deviations. The transition probability is measured to be A=3.1-1.2+1.6×10 -8s -1 for the first time, which is in good agreement with the theoretical value of 3.37×10 -8s -1.

AB - We report the first direct measurement of the hyperfine transition of the ground state positronium. The hyperfine structure between ortho-positronium and para-positronium is about 203 GHz. We develop a new optical system to accumulate about 10kW power using a gyrotron, a mode converter, and a Fabry-Pérot cavity. The hyperfine transition has been observed with a significance of 5.4 standard deviations. The transition probability is measured to be A=3.1-1.2+1.6×10 -8s -1 for the first time, which is in good agreement with the theoretical value of 3.37×10 -8s -1.

UR - http://www.scopus.com/inward/record.url?scp=84862563759&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84862563759&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.108.253401

DO - 10.1103/PhysRevLett.108.253401

M3 - Article

AN - SCOPUS:84862563759

VL - 108

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 25

M1 - 253401

ER -