Atomic Physics Laboratory
Distinguished Senior Scientist
Yasunori YAMAZAKI (D.Eng.)
Trapping and cooling of a large number of antihprotons, RI ions, and positrons to study the production mechanisms of antihydrogen atoms, antiprotonic atoms and hollow atoms. Particularly, (1)synthesis of spin-polarized antihydrogen atoms and CPT symmetry test through ground state hyperfine splitting, (2)laser and rf spectroscopy of RI (radio isotope) ions for nuclear structure study of unstable nuclei, (3) production of high-density positron plasma and intense positroniums, (4)production of nm-size charged particle beams and its application like living cell surgery, and (5)nano-size modification/analysis with slow highly charged ions, (6)high resolution virtual-photon spectroscopy with channeling heavy ions for the study of high-Z QED and virtual X-ray dressed states.
- Synthesis of spin-polarized antihydrogen beam and CPT test, and atomic collision involving antiprotons
- Production of sub-micro m-size charged particle beams and its application to living cell surgery
- Coherent resonant excitation of GeV highly charged ions and high resolution spectroscopy
- November 18, 2010
- Thirty-eight decelerated anti-hydrogen atoms trapped in magnetic bottle
- December 6, 2010
- New technique for antihydrogen synthesis promises answers to mysteries of antimatter
- November 19, 2008
- Successful reduction of speed and refrigeration to a temperature of 0.01 K of the RI-beam, which was accelerated to 40% of the speed of light, enabling the development of precision laser nuclear spectroscopy of the atomic nucleus for the construction of an 'ultimate atomic model of nuclei'.
- September 22, 2011
- Antimatter sticks around
The entrapment of antimatter for 16 minutes allows for tests of the foundations of physics
- November 07,2008
- Slow motion: antiprotons unravel atoms
Theories on atomic reactions are being tested in collision experiments using a very slow beam of antiprotons
- Y. Enomoto, N. Kuroda, K. Michishio, C. H. Kim, H. Higaki, Y. Nagata, Y. Kanai, H. A. Torii, M. Corradini, M. Leali, E. Lodi-Rizzini, V. Mascagna, L. Venturelli, N. Zurlo, K. Fujii, M. Ohtsuka, K. Tanaka, H. Imao, Y. Nagashima, Y. Matsuda, B. Juhász, A. M.:
"Synthesis of Cold Antihydrogen in a Cusp Trap,"
Phys. Rev. Lett. 105 (2010) 243401. - G. B. Andresen, M. D. Ashkezari, M. Baquero-Ruiz, W. Bertsche, P. D. Bowe, E. Butler, C. L. Cesar, S. Chapman, M. Charlton, A. Deller, S. Eriksson, J. Fajans, T. Friesen, M. C. Fujiwara, D. R. Gill, A. Gutierrez, J. S. Hangst, W. N. Hardy, M. E. Hayden, A.:
"Trapped antihydrogen,"
Nature 468(2010)673-676. - H. Knudsen, H. A. Torii, M. Charlton, Y. Enomoto, I. Georgescu, C. A. Hunniford, C. H. Kim, Y. Kanai, H.-P. E. Kristiansen, N. Kuroda, M. D. Lund, R.W. McCullough, K. Tökesi, U. I. Uggerhøj, and Y. Yamazaki.:
"Target Structure Induced Suppression of the Ionization Cross Section for Very Low Energy Antiproton-Hydrogen Collisions","
Phys. Rev. Lett. 105 (2010) 213201. - Kuroda, N., Torii, H.A., Shibata, M., Nagata, Y., Barna, D., Hori, M., Horvath, D., Mohri, A., Eades, J., Komaki, K., and Yamazaki, Y.:
"Radial compression of antiproton cloud for production of intense antiproton beams."
Phys.Rev.Lett. 100, 203402 (2008) - Iwai, T., Ikeda, T. M., Kojima, Y., Yamazaki, K., Maeshima, N., Imamoto, T., Kobayashi, T., Nebiki, T., Narusawa, G., and Pokhil, P.:
"Ion irradiation in liquid of mm3 region for cell surgery."
Appl. Phys. Lett. 92, 023509(2008) - Ikeda, T., Kanai, Y., Kojima, T., Iwai, Y., Kambara, T., and Yamazaki, Y.:
"Production of a microbeam of slow highly charged ions with a tapered glass capillary."
Appl. Phys. Lett. 89, 163502(2006) - Azuma, T., Takabayashi, Y., Kondo, C., Muranaka, T., Komaki, K., Yamazaki, Y., Takada, E., and Murakami, T.:
"Anisotropic X-Ray Emission from Heliumlike Fe24+ Ions Aligned by Resonant Coherent Excitation with a Periodic Crystal Potential."
Phys. Rev. Lett. 97, 145502(2006) - Kuroda, N., Torii, H.A., Franzen, K. Y., Wang, Z., Yoneda, S., Inoue, N., Hori, M., Juhasz, B., Horvath, D., Higaki, H., Mohri, A., Komaki, K., and Yamazaki, Y.:
"Confinement of a large number of antiprotons and production of an ultra-slow antiproton beam."
Phys.Rev.Lett. 94, 023401-4(2005) - N. Okabayashi, K. Komaki, and Y. Yamazaki.:
"Enhanced Sputtering from the F/Si(100) Surface with Extraction of the Surface Bond Direction"
Phys. Rev. Lett. 107 (2011)113201 - S. Ninomiya, Y. Yamazaki, F. Koike, H. Masuda, T. Azuma, K. Komaki, K. Kuroki, and M. Sekiguchi.:
"Stabilized hollow ions extracted in vacuum"
Phys.Rev.Lett. 78 (1997) 4557-4560
Principal Investigator
- Yasunori YAMAZAKI
- Distinguished Senior Scientist
Staff Scientist
- Yasuyuki KANAI
- Senior Research Scientist
- Takao KOJIMA
- Senior Research Scientist
- Tokihiro IKEDA
- Senior Research Scientist
- Tomohiro KOBAYASHI
- Senior Research Scientist
- Manabu HAMAGAKI
- Senior Technical Scientist
Postdoctoral Fellow
- Daniel James MURTAGH
- Foreign Postdoctoral Researcher
- Volkhard MAECKEL
- Postdoctoral Researcher
- Simon Hendrik Celine Van GORP
- Postdoctoral Researcher
Administrative Assistant
- Hitomi WADA
- Assistant
Visiting Research Staff
- Walter MEISSL
- Visiting Scientist
Others
- Isao SHIMAMURA
- Research Consultant
- Tsutomu WATANABE
- Research Consultant
- Ken-ichirou KOMAKI
- Research Consultant
- Akihiro MOHRI
- Research Consultant
- Kiyoshi OGIWARA
- Part-timer 1
- Yugo NAGATA
- Part-timer 1
- Machiko IZAWA
- Part-timer 2