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Johannes Jensen

Picture of Johannes Jensen

Date of Birth: 06/25/1907

Age: 65

Place of birth: Hamburg

Citizenship: Germany

Background

Hans Daniel was the third child in the family gardener Karl Friedrich Jensen and his wife Helena Augusta Jensen Adolphine (nee ohms). Since 1926, he studied first at the University of Hamburg, and then to the University of Freiburg. He studied physics, mathematics, physical chemistry and philosophy. After obtaining a stay in Hamburg, PhD in physics as a research assistant. In 1936 he received his PhD. In 1937 he became a lecturer and in 1941 a professor at the Technical University of Hanover. In 1949 he became a professor at the University of Heidelberg, where remains until retirement. During this time he repeatedly taught in the United States, including Princeton University and Kaliforniyskomuniversitete Berkeley. Since 1955, in conjunction Hakselem Otto, he was the publisher of the journal Zeitschrift f & # 252; r Physik.

A characteristic of the human qualities of Hans Jensen is the following anecdote:

The morning after receiving the Nobel Prize he called the country`s prime minister and asked if he had any cherished desire. Jensen immediately, replied: "Yes, I would like you to give a German citizen students who were expelled from Iraq and stripped of citizenship." The student has received German citizenship. (It.).

Achievements

The first work of Jensen, among other things, two of his dissertations were devoted to the refinement of the statistical model of the atomic shell Thomas-Fermi. In the late 1930s, he became interested in the atomic nucleus. Already in 1939, based on empirical analysis of the properties of nuclei, binding energy and their prevalence in nature, it expresses the idea of ??the shell structure of the nucleus, but in the most general terms. This idea was considered very precarious, since on the one hand, the drop model of the nucleus from the Niels Bohr in 1936 a very good description of nuclear reactions, and on the other hand the concept of orbits in the nucleus seems to make no sense. Further development of this model was delayed international isolation of Germany during the Second World War. Only in the late 40-ies of XX-th century, Jensen was able to address this topic again. In 1948, using a model of a strong spin-orbit interaction, it udalosobyasnit existence of magic numbers, designating particularly stable nuclei. At the same time it has the same effect came in the US Maria Goeppert-Mayer. The subsequent intensive exchange of ideas between Jensen and G