After the war, Leona Marshall returned to the University of Chicago, where she became a fellow at Fermi's Institute for Nuclear Studies. Working with the Chicago Pile 3 heavy water reactor, she found a way to 100 percent spin polarize neutron beams, and determined the refractive index of neutrons for various materials. Her second child, John Marshall III, was born in 1949. She became an assistant professor in 1953.After Fermi died in 1954, the Marshalls separated. John Marshall returned to the Los Alamos Laboratory, while Leona, now effectively a single mother, became a fellow at the Institute for Advanced Study in Princeton, New Jersey in 1957. The following year she became a fellow at the Brookhaven National Laboratory, at a time when the focus of research in physics was shifting away from the nucleus and towards elementary particles. In 1960, she joined New York University as an associate professor of physics. She became a professor in 1962.Three years later, she became a professor at the University of Colorado, researching high-energy physics, astrophysics and cosmology. She then became a staff member at RAND Corporation, where she worked until 1976. In 1966, she divorced John Marshall, and married Willard Libby, who had won the Nobel prize in 1960. She later joined him at UCLA, where she became a visiting professor of environmental studies, engineering, engineering archaeology, mechanical aerospace  and nuclear engineering in 1973.Now known as Leona Marshall Libby, she became interested in ecological and environmental issues, and she devised a method of using the isotope ratios of Oxygen-18 to Oxygen-16, Carbon-13 to Carbon-12, and Deuterium to Hydrogen in tree rings to study changes in temperature and rainfall patterns hundreds of years before records were kept, opening the door to the study of climate change.Like Willard Libby, she was a strong advocate of food irradiation as a means of killing off harmful bacteria, and advocated that legal and regulatory restrictions on its use be relaxed. She proposed that, instead of it being sprayed with malathion, fruit affected by the Mediterranean fruit fly could be treated with gamma rays.She was a prolific author, publishing over 200 scientific papers.  While at RAND she wrote a paper on Creation of an Atmosphere for the Moon (1969). Her works include the autobiographical The Uranium People (1979), a history of early atomic research. After Libby died in 1980, she edited his papers with Rainer Berger, and published The Life Work of Nobel Laureate Willard Libby (1982). Her last paper, on quasi-stellar objects, appeared in 1984.She died at St. John's Medical Center in Santa Monica, California, on November 10, 1986, from an anesthesia-induced stroke. She was survived by her sons Peter and John, and four grandchildren. She also had two stepdaughters, Janet Eva Libby and Susan Charlotte Libby from her second marriage.
After the war, Leona Marshall returned to the University of Chicago, where she became a fellow at Fermi's Institute for Nuclear Studies. Working with the Chicago Pile 3 heavy water reactor, she found a way to 100 percent spin polarize neutron beams, and determined the refractive index of neutrons for various materials. Her second child, John Marshall III, was born in 1949. She became an assistant professor in 1953.After Fermi died in 1954, the Marshalls separated. John Marshall returned to the Los Alamos Laboratory, while Leona, now effectively a single mother, became a fellow at the Institute for Advanced Study in Princeton, New Jersey in 1957. The following year she became a fellow at the Brookhaven National Laboratory, at a time when the focus of research in physics was shifting away from the nucleus and towards elementary particles. In 1960, she joined New York University as an associate professor of physics. She became a professor in 1962.Three years later, she became a professor at the University of Colorado, researching high-energy physics, astrophysics and cosmology. She then became a staff member at RAND Corporation, where she worked until 1976. In 1966, she divorced John Marshall, and married Willard Libby, who had won the Nobel prize in 1960. She later joined him at UCLA, where she became a visiting professor of environmental studies, engineering, engineering archaeology, mechanical aerospace  and nuclear engineering in 1973.Now known as Leona Marshall Libby, she became interested in ecological and environmental issues, and she devised a method of using the isotope ratios of Oxygen-18 to Oxygen-16, Carbon-13 to Carbon-12, and Deuterium to Hydrogen in tree rings to study changes in temperature and rainfall patterns hundreds of years before records were kept, opening the door to the study of climate change.Like Willard Libby, she was a strong advocate of food irradiation as a means of killing off harmful bacteria, and advocated that legal and regulatory restrictions on its use be relaxed. She proposed that, instead of it being sprayed with malathion, fruit affected by the Mediterranean fruit fly could be treated with gamma rays.She was a prolific author, publishing over 200 scientific papers.  While at RAND she wrote a paper on Creation of an Atmosphere for the Moon (1969). Her works include the autobiographical The Uranium People (1979), a history of early atomic research. After Libby died in 1980, she edited his papers with Rainer Berger, and published The Life Work of Nobel Laureate Willard Libby (1982). Her last paper, on quasi-stellar objects, appeared in 1984.She died at St. John's Medical Center in Santa Monica, California, on November 10, 1986, from an anesthesia-induced stroke. She was survived by her sons Peter and John, and four grandchildren. She also had two stepdaughters, Janet Eva Libby and Susan Charlotte Libby from her second marriage.
利昂娜第二個孩子叫什麼名字？
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