Maria Goeppert-Mayer - Biography

Biography

Maria Goeppert was born in Kattowitz (now Katowice, Poland), within the German Empire's Prussian Province of Silesia. Her family moved to Göttingen in 1910 when her father Friedrich was appointed Professor of Pediatrics at the University of Göttingen. On her father's side, Goeppert-Mayer was supposedly a seventh-generation professor. From a young age, she was surrounded by the students and lecturers from the university, intellectuals including the future Nobel winners Enrico Fermi, Werner Heisenberg, Paul Dirac and Wolfgang Pauli. In 1924, Goeppert passed the abitur, making her eligible to enter university, and enrolled at Göttingen university in the fall. Among her professors at Göttingen were three future Nobel prize winners: Max Born, James Franck and Adolf Otto Reinhold Windaus. Goeppert completed her Doctor of Philosophy degree (Ph.D.) at the University of Göttingen in 1930, and in that same year, she married Dr. Joseph Edward Mayer, an assistant of James Franck. The new couple next moved to the United States, Mayer's home country.

For the next few years, Goeppert-Mayer worked at unofficial or volunteer positions at the university at which her husband was professor—first at the Johns Hopkins University in Baltimore, Maryland, from 1931–39, then Columbia University in 1940-46, and after that the University of Chicago. During this time, Goeppert-Mayer was unable to gain a professional appointment at Mayer's universities due in part to both sexism and strict rules against nepotism. However, she was able to find other opportunities, including a teaching position at Sarah Lawrence College, a research position with Columbia University's Substitute Alloy Materials Project and with the Opacity Project (an investigation of matter and radiation at high temperature, part of the development of the hydrogen bomb), and she also spent some time at the Los Alamos Laboratory.

During her husband's time at the University of Chicago, Goeppert-Mayer was able to become a voluntary Associate Professor of Physics at the school. In addition, when the nearby Argonne National Laboratory was founded on July 1, 1946, Goeppert-Mayer was offered a part-time job there as a Senior Physicist in the Theoretical Physics Division. It was during her time at Chicago and Argonne that she developed a mathematical model for the structure of nuclear shells, the work for which she was awarded the Nobel Prize in Physics in 1963, shared with J. Hans D. Jensen and Eugene Paul Wigner.

Goeppert-Mayer's model explained "why certain numbers of nucleons in the nucleus of an atom cause an atom to be extremely stable". This had been baffling scientists for some time. These numbers are called "magic numbers". She postulated, against the received wisdom of the time, that the nucleus is like a series of closed shells and pairs of neutrons and protons like to couple together in what is called spin orbit coupling. This is like the Earth spinning on its axis as the Earth itself is spinning around the Sun. Goeppert-Mayer described the idea elegantly:

"Think of a room full of waltzers. Suppose they go round the room in circles, each circle enclosed within another. Then imagine that in each circle, you can fit twice as many dancers by having one pair go anti-clockwise and another pair go counterclockwise. Then add one more variation; all the dancers are spinning twirling round and round like tops as they circle the room, each pair both twirling and circling. But only some of those that go counterclockwise are twirling counterclockwise. The others are twirling clockwise while circling counterclockwise. The same is true of those that are dancing around clockwise: some twirl clockwise, others twirl counterclockwise."

At the same time, there were German scientists working on exactly the same thing. After they had published their results, Goeppert-Mayer sought to collaborate with them. One from the German team, Jensen, worked with her to produce a book in 1950 called Elementary Theory of Nuclear Shell Structure. In 1963, Goeppert-Mayer and Jensen shared the Nobel Prize for Physics "...for their discoveries concerning nuclear shell structure." She was quoted as saying, "Winning the prize was half as exciting as doing the work."

In 1960, Goeppert-Mayer was appointed to a position as a (full) Professor of Physics at the University of California at San Diego. Although she suffered from a stroke shortly after arriving there, she continued to teach and conduct research for a number of years.