Tihiro Ohkawa Tihiro Ohkawa was a Japanese physicist whose field of work was in plasma physics and fusion power . He was a pioneer in developing ways to generate electricity by nuclear fusion when he worked at General Atomics . Ohkawa died September 27, 2014 in La Jolla, California at the age of 86.Early life and career Ohkawa was born in Kanazawa on January 3 , 1928. He studied physics at the University of Tokyo in 1950, and was a member of the Yoshio Nishina group for researching cosmic altitude radiation for 16 years even during the World War II . He was a researcher at CERN and at Midwestern State University before becoming a professor at the University of Tokyo. In 1960, he went to General Atomics, where he led a fusion research project and later became vice president and deputy chairman of the board . In 1994, Ohkawa left General Atomics to found TOYO Technologies. In 2004, he was co-founder of Nano Fusion Technologies with Masano Nishikawa for the development of microfluidics . He was also a physics professor at the University of California, San Diego .Scientific contributions In 1955, Ohkawa independently came up with idea of the fixed-field alternating gradient accelerator together with Keith Symon and Andrei Kolomensky , which led to the development of the first prototype in 1956 by the Midwestern Universities Research Association . He then developed a procedure to stabilize instabilities in tokamaks using multipole magnetic fields with Donald Kerst in 1960, which was then later confirmed by experiments. In 1968, Ohkawa demonstrated that the plasma-current multipole configuration used to trap plasmas was stable, which resulted in the development of a series of tokamaks with vertically elongated plasma cross sections called the doublet . This eventually led to General Atomics' DIII-D tokamak , which influenced the design and concept of ITER . Ohkawa was also involved in the use of radioactive isotopes in the separation of nuclear isotopes from nuclear waste . Ohkawa holds over 50 patents, in areas such as tile accelerators, fusion technology and biotechnology .Honors and awards In 1968, Ohkawa became a Fellow of the American Physical Society . In 1979, he received the James Clerk Maxwell Prize for Plasma Physics for "his development of multi-current or doublet approach to the design of tokamaks with non-circular cross sections and for investigation of plasma confinement in toroidal multipoles ". He also received the 1984 Fusion Power Associates Leadership Award.
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