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Oge Bor

Picture of Oge Bor

Date of Birth: 06/19/1922

Age: 87

Place of birth: Copenhagen

Citizenship: Denmark

Background

After graduating high school in Sortsdame, he began studying physics at the University of Copenhagen in 1940, the same year, when Germany occupied Denmark. To avoid imminent arrest by the Gestapo service, Niels Bohr in 1943 fled to Sweden, where he was joined by all the other members of the family. Then Aage accompanied his father in England, and then in the US, where the elder Bohr played a leading role in the Manhattan Project to build the atomic bomb. The Los Alamos Scientific Laboratory (New Mexico) B. was for his father`s secretary and assistant in all his affairs.

When World War II ended, the family Bohr returned to Denmark. After receiving a master`s degree from the University of Copenhagen in 1946, B. became an assistant researcher at the Institute of Theoretical Physics. He returned to the United States in 1949 to work at the Institute for Basic Research in Princeton (NJ), as well as to conduct research at Columbia University. At Columbia University, IA Rabi arouse B. interest in the hyperfine structure of deuterium, in particular, to the splitting of the lines of its atomic spectrum, and B. remained here until 1950, to perform theoretical studies. All this time, he worked in the same office with James Rainwater, with whom he discussed the fundamental questions of the structure of the atomic nucleus.

B. and Rainwater were not satisfied with the two previous models of the atomic nucleus. One, drop model, was launched in 1936 by the father of vney B. suggested that protons and neutrons (collective name - nucleons) are held together by nuclear forces in much the same way as water molecules are held in a drop of rain. Trickle theory gave a satisfactory explanation of such phenomena as nuclear fission, but she could not explain some other properties of the core and first of all the spectrum of the excited states.

Another model was proposed by Maria Goeppert-Mayer and J. Hans D. Jensen. Named the shell model, it describes the motion of the nucleons in independent concentric orbits, or shells, inside the nucleus, the same electron shells in the atom. According to the shell model, it is the sum of all the forces caused by nucleons determines the behavior of each individual nucleon. The result is a so-called force field, which is believed to Goeppert-Mayer and Jensen, has a spherical shape. The validity of this model is in doubt due to the fact that, as the experiment shows, the distribution of electrical charges surrounding Some nuclei are not spherical.

After listening to a lecture by Charles H. Townes in 1949, Rainwater realized that the orbit can distorted by centrifugal force. Similar ideas have come and B, so after returning to Copenhagen in 1950, B. and Benjamin R. Mottelson started working together, trying to give a new description of nuclear matter. Taking the submission Rainwater, they created synthetic model that combines the properties of the liquid core to its shell structure. This model is called the collective model.

The collective surface of the core model behaves like the surface of a liquid droplet, but the shell structure is subject to deformations which occur on the surface in the form of vibrations and rotation. If the outer shell is filled with nucleons, say B. and Mottelson, the nucleus has a spherical shape, and if the outer shell is not filled before the end, the shape of the nucleus becomes distorted and melon-shaped. In such a deformed nucleus, they say, will be observed new modes of vibration and rotation, including surface waves and fluctuations in the size of the nucleus.

Collective model allowed B. and Mottelson not only to calculate the likely properties deformed nuclei and confirm the hypothesis Rainwater. On their findings they reported in 1953. The following year, B. received his doctorate from the University of Copenhagen, and in 1956 took the post of professor of physics there.

After the death of his father in 1962, B. was appointed director of the Institute for Theoretical Physics, in this post he remained until 1970, when, after retirement started a new period of active research. He became director of the Nordic Institute for Theoretical Atomic Physics (Nordita) in 1975 BS, Mottelson and Rainwater shared the 1975 Nobel Prize in Physics "for the discovery of the relationship between collective motion and the motion of a single particle in the atomic nucleus and the development of the theory of the structure of the atomic nucleus based on this relationship. " In his Nobel lecture B. described his work with Mottelson "an important testing ground for many of the general ideas nuclear dynamics". The response to these ideas, he said, "played an important role in the development of dynamic concepts, ranging from celestial mechanics to the spectra of elementary particles"

After receiving the Nobel Prize, B. continued theoretical research in Nordita until his retirement in 1981. He married Marietta Bettina Soffer in 1950 .; they have two sons and a daughter. Three years after the death of his first wife in 1978 he married Bente Meyer. He likes to listen to classical music. In favor of international cooperation research, calling it a "vital factor in the development of science itself," as well as "a means of strengthening mutual knowledge and understanding between nations."

Among other awards can be called B. Danny Heineman Prize of the American Physical Society (1960), the prize for `peaceful atom ", established by the Ford Foundation (1969), the Rutherford Medal of the London Institute of Physics (1972) and the Medal of John Pryce Uizerilla Franklin Institute (1974). He has honorary degrees universities of Oslo, Heidelberg, Trondheim, Manchester and Uppsala. He is a member of the Academies of Sciences of Denmark, Norway, Sweden, Poland, Finland and Yugoslavia, and is a member of the US National Academy of Sciences. American Academy of Arts and Sciences, the American Philosophical Society and other professional societies.