Log In

Yoji Totsuka Edit Profile

physics educator

Yoji Totsuka, Japanese physics educator. Recipient Nishina Memorial prize Nishina Foundation, 1987, Asahi prize 1988, 1999, Rossi prize American Astronomical Society, 1989, Inoue prize, 1990, Special prize, European Physical Society, 1995; co-recipient Benjamin Franklin medal in Physics, Franklin Institute, 2007.


Totsuka, Yoji was born on March 6, 1942 in Fuji, Japan. Son of Kazuo and Mitsuko (Ono) Totsuka.


Bachelor of Science in Physics, University Tokyo, 1965. Master of Science, University Tokyo, 1967. Doctor of Science, University Tokyo, 1972.


Research associate University Tokyo, 1972-1979, assistant professor, 1979-1987, professor physics, 1987—2001, professor, Institute for Cosmic Ray Research, 2001—2003, Special University professor emeritus, 2003—2008, director, Kamioka Observatory, 1995—2002, director, Institute for Cosmic Ray Research, 1997—2001. Director-general High Energy Accelerator Research Organization (Kō Enerugī Kasokuki Kenkyū Kikō), Ibaraki, Japan, 2003—2006. Studied ultra-high-energy interactions in nuclear emulsions, 1965—1966.

Studied muon bundles observed underground, 1967—1972. Guest scientist, particle physicist investigated electron-positron collisions in experiments like DASP DORIS Accelerator, 1972—1976. Studied e+e-collisions PETRA, Deutsches Elektronen-Synchrotron, 1977—1980.

Searched for proton decay and study of supernova-solar-and atmospheric-neutrinos with Kamiokande-I,-II and -III, 1981—1995. Studied astrophysical neutrinos and search for proton decay with Super-Kamiokande, 1991. Guest scientist, particle physicist investigated electron-positron collisions in experiments like JADE PETRA Accelerator, 1996—1998.

Member Physics Research Committee (Provider Reimbursement Consultants), 1996—1998.


Member Japan Physical Society, Japan Astronomical Society, American Physical Society(Wolfgang Kurt Hermann Panofsky prize in Experimental Particle Physics, 2002).


Married Hiroko Miyata, January 2, 1944. Children: Hirofumi, Yumi.

Kazuo Totsuka

Mitsuko (Ono) Totsuka

Hiroko Miyata

Hirofumi Totsuka

Yumi Totsuka