Zobrazeno 1 - 10
of 1 187
pro vyhledávání: '"Idehara, T"'
Autor:
Miyazaki, A., Yamazaki, T., Suehara, T., Namba, T., Asai, S., Kobayashi, T., Saito, H., Tatematsu, Y., Ogawa, I., Idehara, T.
We report on the first measurement of the Breit-Wigner resonance of the transition from {\it ortho-}positronium to {\it para-}positronium. We have developed an optical system to accumulate a power of over 20 kW using a frequency-tunable gyrotron and
Externí odkaz:
http://arxiv.org/abs/1403.0312
Autor:
Yamazaki, T., Miyazaki, A., Suehara, T., Namba, T., Asai, S., Kobayashi, T., Saito, H., Ogawa, I., Idehara, T., Sabchevski, S.
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 10 kW pow
Externí odkaz:
http://arxiv.org/abs/1204.1129
Autor:
Yamazaki, T., Miyazaki, A., Suehara, T., Namba, T., Asai, S., Kobayashi, T., Saito, H., Urushizaki, Y., Ogawa, I., Idehara, T., Sabchevski, S.
Positronium is an ideal system for the research of the bound state QED. The hyperfine splitting of positronium (Ps-HFS, about 203 GHz) is an important observable but all previous measurements of Ps-HFS had been measured indirectly using Zeeman splitt
Externí odkaz:
http://arxiv.org/abs/1105.4352
Detection of the Direct Hyperfine Transition of Positronium Atoms using sub-THz High-power Radiation
Autor:
Suehara, T., Miyazaki, A., Yamazaki, T., Akimoto, G., Ishida, A., Namba, T., Asai, S., Kobayashi, T., Saito, H., Yoshida, M., Idehara, T., Ogawa, I., Urushizaki, Y., Sabchevski, S.
Hyperfine splitting of positronium is an important parameter for particle physics. This paper gives experimental techniques and results of R&D studies of our experiment to observe direct hyperfine transition of ortho-positronium to para-positronium.<
Externí odkaz:
http://arxiv.org/abs/1007.0843
Autor:
Suehara, T, Miyazaki, A, Ishida, A, Namba, T, Asai, S, Kobayashi, T, Saito, H, Yoshida, M, Idehara, T, Ogawa, I, Kobayashi, S, Urushizaki, Y, Sabchevski, S
Publikováno v:
J.Phys.Conf.Ser.199:012002,2010
Positronium is an ideal system for the research of the bound state QED. The hyperfine splitting of positronium (Ps-HFS: about 203 GHz) is sensitive to new physics beyond the Standard Model via a vacuum oscillation between an ortho-Ps and a virtual ph
Externí odkaz:
http://arxiv.org/abs/1007.0834
Autor:
Asai, S., Suehara, T., Yamazaki, T., Akimoto, G., Miyazaki, A., Namba, T., Kobayashi, T., Saito, H., Idehara, T., Ogawa, I., Urishizaki, Y., Sabchevski, S.
Positronium is an ideal system for the research of the QED, especially for the QED in bound state. The discrepancy of 3.9\sigma is found recently between the measured HFS values and the QED prediction ($O(\alpha^3)$). It might be due to the contribut
Externí odkaz:
http://arxiv.org/abs/1003.4324
Autor:
Ishida, A., Akimoto, G., Kato, K., Suehara, T., Namba, T., Asai, S., Kobayashi, T., Saito, H., Yoshida, M., Tanaka, K., Yamamoto, A., Ogawa, I., Kobayashi, S., Idehara, T.
Publikováno v:
J.Phys.Conf.Ser.199:012004,2010
The ground state hyperfine splitting in positronium, $\Delta _{\mathrm{HFS}}$, is sensitive to high order corrections of QED. A new calculation up to $O(\alpha ^3)$ has revealed a $3.9 \sigma$ discrepancy between the QED prediction and the experiment
Externí odkaz:
http://arxiv.org/abs/0912.4370
Autor:
Asai, S., Kataoka, Y., Kobayashi, T., Namba, T., Suehara, T., Akimoto, G., Ishida, A., Hashimoto, M. M., Saito, H., Idehara, T., Yoshida, M.
Publikováno v:
AIPConf.Proc.1037:43-55,2008
Positronium is an ideal system for the research of the bound state QED. New precise measurement of orthopositronium decay rate has been performed with an accuracy of 150 ppm, and the result combined with the last three is 7.0401 +- 0.0007 mu s^-1. It
Externí odkaz:
http://arxiv.org/abs/0805.4672
Autor:
Aripin H., Mitsudo S., Rahmat B., Tani S., Sako K., Fujii Y., Kikuchi K., Saito T., Idehara T., Sabchevski S.
Publikováno v:
Science of Sintering, Vol 46, Iss 1, Pp 55-64 (2014)
A novel type of ceramic material was produced by mixing sago waste ash from the sago processing industry in Indonesia with clay. The composition was prepared by adding 50 %wt amount of sago waste into the clay, then a series of samples was milled
Externí odkaz:
https://doaj.org/article/c5bccfce29ea42a2bab66428d982342a
Autor:
Ginzburg N.S., Idehara T., Zaslavsky Yu.V., Zotova I.V., Glyavin M.Yu., Sergeev A.S., Malkin A.M., Zheleznov I.V.
Publikováno v:
EPJ Web of Conferences, Vol 187, p 01008 (2018)
Externí odkaz:
https://doaj.org/article/4887311d1c114cdeb179bb7cd7dd520e