Toshio Takamine, Niels Bohr, Yoshio Nishina, Yoshikatsu Sugiura, Takeo Hori, Mitsuhara Fukuda and Kenjiro Kimura.
| Nummer | B849 |
| Type | Billeder |
| Beskrivelse | Toshio Takamine, Niels Bohr, Yoshio Nishina, Yoshikatsu Sugiura, Takeo Hori, Mitsuhara Fukuda and Kenjiro Kimura in Takamine's Garden, Tokyo, Japan. |
| Bemærkning | Toshio Takamine (1885 -1959) was a Japanese experimental physicist. He worked at UITF/NBI in 1921 and 1925.
Yoshio Nishina (1890-1951) was a leader of the Japanese atomic bomb program, and the "father of nuclear physics in Japan." He attended Tokyo Imperial University, graduating with a degree in Electrical Engineering in 1919. He became a research assistant at the Institute of Physical and Chemical Research (known by its Japanese acronym, RIKEN). In 1921, RIKEN sent Nishina to study in Europe. He studied at the Cavendish Laboratory at Cambridge, where he studied under Ernest Rutherford. In 1923, he moved to Copenhagen to work with Niels Bohr. He also visited Göttingen and Hamburg.He left Copenhagen in 1928. In 1931, Nishina established his own lab. Its focuses became quantum mechanics, nuclear physics, cosmic rays, and high-energy proton beams. In 1940, Nishina was asked by the Japanese military to research nuclear fission. In April 1941, the Imperial Japanese Army (IJA) officially authorized Ni-Go, the project to research an atomic bomb. Nishina’s team’s initial conclusion was that an atomic bomb was theoretically, but not technically, feasible. The day after the US dropped an atomic bomb on Hiroshima, Nishina received a copy of a restricted press release about the bomb that had come from President Truman. Nishina confirmed to the government the veracity of the claims about atomic weaponry. This may have influenced the decision-making process that eventually led to Japan's surrender. In October 1945, after surrender, Nishina asked the occupying forces for permission to continue using his remaining cyclotrons for biological and medical research. Permission was initially granted, then rescinded under orders from the Secretary of War. Every cyclotron in Japan was destroyed. Yoshikatsu Sugiura (1895-1960) made his name in quantum chemistry with his contribution to the Heitler-London theory of the chemical bond. Takeo Hori (1899 - 1994) was a Japanese physicist. He attended Kyoto University. He worked at UITF/NBI during the 1920's and later at Kwansei Gakuin University, Kyoto Sangyo University and Hokkaido University Mitsuharu Fukuda was a Japanese physicist working at the Institute of Physical and Chemical Research in Tokyo. He visited UITF/NBI in 1928. Kenjiro Kimura (1899 – 1988) was a Japanese chemist. He worked at the University of Tokyo and collaborated with Yoshio Nishina on the chemical effects of X-ray spectra. From 1938 onwards they started working together in Japan to elucidate some current topical problems in radioactivity research including the discovery of symmetric nuclear fission of uranium. They also succeeded in getting U-237, which is an (n+1) series (neptunium series) nuclide, from U-238 by fast neutron irradiation. |
| Årstal | 1937 |
| Dateringsnote | The picture is taken during Niels Bohr's world tour of 1937. |
| Fotograf | Ukendt |
| Arkiv | Niels Bohr Archive |
