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First observation of two hyperfine transitions in antiprotonic $^3$He
/ Friedreich, S. (Stefan Meyer Inst. Subatomare Phys.) ; Barna, D. (Tokyo U. ; Budapest, RMKI) ; Caspers, F. (CERN) ; Dax, A. (Tokyo U.) ; Hayano, R.S. (Tokyo U.) ; Hori, M. (Tokyo U. ; Munich, Max Planck Inst. Quantenopt.) ; Horvath, D. (Budapest, RMKI ; Debrecen, Inst. Nucl. Res.) ; Juhasz, B. (Stefan Meyer Inst. Subatomare Phys.) ; Kobayashi, T. (Tokyo U.) ; Massiczek, O. (Stefan Meyer Inst. Subatomare Phys.) et al.
We report on the first experimental results for microwave spectroscopy of the hyperfine structure of antiprotonic He-3. Due to the helium nuclear spin, antiprotonic He-3 has a more complex hyperfine structure than antiprotonic He-4 which has already been studied before. [...]
arXiv:1102.5286.-
2011 - 8 p.
- Published in : Phys. Lett. B 700 (2011) 1-6
Fulltext: PDF; External link: Preprint
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Microwave spectroscopic study of the hyperfine structure of antiprotonic helium-3
/ Friedreich, Susanne (Stefan Meyer Inst. Subatomare Phys.) ; Barna, Daniel (Tokyo U. ; Budapest, RMKI) ; Caspers, Fritz (CERN) ; Dax, Andreas (Tokyo U.) ; Hayano, Ryugo S (Tokyo U.) ; Hori, Masaki (Tokyo U. ; Garching, Max Planck Inst.) ; Horváth, Dezső (Budapest, RMKI ; Debrecen, Inst. Nucl. Res.) ; Juhász, Bertalan (Stefan Meyer Inst. Subatomare Phys.) ; Kobayashi, Takumi (Tokyo U.) ; Massiczek, Oswald (Stefan Meyer Inst. Subatomare Phys.) et al.
In this work we describe the latest results for the measurements of the hyperfine structure of antiprotonic helium-3. [...]
arXiv:1303.2831.
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2013. - 15 p.
Preprint
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Hyperfine structure of antiprotonic helium revealed by a laser-microwave-laser resonance method
/ Widmann, E. (Tokyo U.) ; Hayano, R.S. (Tokyo U.) ; Ishikawa, T. (Tokyo U.) ; Sakaguchi, J. (Tokyo U.) ; Yamaguchi, H. (Tokyo U.) ; Eades, J. (CERN) ; Hori, M. (CERN) ; Torii, H.A. (Tokyo U., Komaba) ; Juhasz, B. (Debrecen, Inst. Nucl. Res.) ; Horvath, D. (Budapest, RMKI) et al.
Using a newly developed laser-microwave-laser resonance method, we observed a pair of microwave transitions between hyperfine levels of the $(n,L)=(37,35)$ state of antiprotonic helium. This experiment confirms the quadruplet hyperfine structure due to the interaction of the antiproton orbital angular momentum, the electron spin and the antiproton spin as predicted by Bakalov and Korobov. [...]
physics/0207059; CERN-EP-2002-067; physics/0207059.-
Geneva : CERN, 2002 - 9 p.
- Published in : Phys. Rev. Lett. 89 (2002) 243402
APS Published version, local copy: PDF; Fulltext: ep-2002-067 - PDF; arXiv:physics_0207059 - PDF; External link: Preprint
- Please contact the library if you need to access this document.
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Collisional Effects on the Antiprotonic Helium Hyperfine Structure Measurement
/ Pask, T (Stefan Meyer Inst. Subatomare Phys.) ; Barna, D (Tokyo Univ.) ; Dax, A (Tokyo Univ.) ; Hayano, S (Tokyo Univ.) ; Hori, M (CERN ; Tokyo Univ.) ; Horváth, D (Budapest, RMKI ; Debrecen, Inst. Nucl. Res.) ; Juhász, B (Stefan Meyer Inst. Subatomare Phys.) ; Malbrunot, C (Stefan Meyer Inst. Subatomare Phys.) ; Marton, J (Stefan Meyer Inst. Subatomare Phys.) ; Ono, N (Tokyo Univ.) et al.
2008 - 13 p.
- Published in : AIP Conf. Proc.: 1037 (2008) , pp. 14-161
In : Workshop on Cold Antimatter Plasmas and Application to Fundamental Physics, Okinawa, Japan, 20 - 22 Feb 2008, pp.148-161
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Cryogenic Tunable Microwave Cavity at 13 GHz for Hyperfine Spectroscopy of Antiprotonic Helium
/ Barna, D (KFKI Res. Inst. Part. Nucl. Phys., Budapest) ; Caspers, Friedhelm (CERN) ; Eades, John (CERN) ; Gilg, H (Univ. Tokyo) ; Hayano, R S ; Hori, Masaki (CERN) ; Horváth, M (KFKI Res. Inst. Part. Nucl. Phys., Budapest) ; Hayano, R S (Univ. Tokyo) ; Ishikawa, T (Univ. Tokyo) ; Juhász, B (Inst. Nucl. Res. Hungarian Academy of Sciences, Debrecen) et al.
For the precise measurement of the hyperfine structure of antiprotonic helium microwave radiation of 12.9 GHz frequency is needed, tunable over ±100 MHz. A cylindrical microwave cavity is used whose front and rear faces are meshed to allow the antiprotons and laser beams to enter. [...]
CERN-AB-2005-004; CERN-PH-EP-2004-071.-
Geneva : CERN, 2004 - 25 p.
- Published in : Nucl. Instrum. Methods Phys. Res., A 533 (2004) 598-611
Fulltext: PDF;
- CERN library copies
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Towards a direct measurement of the g-factor of a single isolated proton
/ Mooser, A (Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.) ; Ulmer, S (Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Quint, W (Darmstadt, GSI) ; Kreim, S (CERN ; Heidelberg, Max Planck Inst.) ; Kracke, H (Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.) ; Rodegheri, C (Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.) ; Walz, J (Helmholtz Inst., Mainz ; Mainz U., Inst. Phys.)
Our Penning trap experiment aims at a direct high-precision measurement of the proton g-factor. We present the experimental setup and the measurement technique using the continuous Stern-Gerlach effect. [...]
2011
- Published in : Can. J. Phys. 89 (2011) 165-168
In : Ecole de Physique: International Conference on Precision Physics of Simple Atomic Systems, Les Houches, France, 30 May - 04 Jun 2010, pp.165-168
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