Nuclear fission

Interviewed by
David Zierler
Interview date
Location
Video conference
Abstract

Interview with Kevin Lesko, Senior Physicist at Lawrence Berkeley National Lab and former Spokesperson for LUX-ZEPLIN (LZ), an international collaboration searching for dark matter. Lesko explains why so many different kinds of physicists are involved in dark matter searches and how theorists have provided guidance for experimental and observational work to understand dark matter. He recounts his upbringing in northern California, the scientific influence of his parents and older siblings, and his decision to attend Stanford, where he worked on a tandem Van De Graaff in the nuclear physics lab. Lesko discusses his graduate work at the University of Washington, where he worked under the direction of Bob Vandenbosch on nuclear fission research, and he describes his postdoctoral appointment at Argonne, where he pursued experiments in nuclear fusion and neutrino physics. He explains his decision to join the staff at Berkeley Lab and how his interests centered increasingly on astrophysics with the Sudbury Neutrino Observatory. Lesko discusses his collaborations in Japan and KamLAND’s discovery of the absolute measurement of neutrino oscillations and the origins of the Homestake collaboration. He describes the transition of support for Homestake from the NSF to the DOE and he explains his entrée to the LUX collaboration and the reasons for the merger with ZEPLIN. Lesko explains how LZ needs to be ready to detect dark matter either as a singularity or is comprised of multiple components, and he considers what it might look like for dark matter to be detected. He recounts LZ’s success in ruling out dark matter candidates and he reflects on LBNL serving as a home base while his collaborative research has always been far-flung. At the end of the interview, Lesko considers what we have learned about the universe as a result of LZ, and why mystery and curiosity will continue to drive the field forward.

Interviewed by
Charles Weiner
Interview date
Location
Altadena, California
Abstract

Interview covers the development of several branches of theoretical physics from the 1930s through the 1960s; the most extensive discussions deal with topics in quantum electrodynamics, nuclear physics as it relates to fission technology, meson field theory, superfluidity and other properties of liquid helium, beta decay and the Universal Fermi Interaction, with particular emphasis on Feynman's work in the reformulation of quantum electrodynamic field equations. Early life in Brooklyn, New York; high school; undergraduate studies at Massachusetts Institute of Technology; learning the theory of relativity and quantum mechanics on his own. To Princeton University (John A. Wheeler), 1939; serious preoccupation with problem of self-energy of electron and other problems of quantum field theory; work on uranium isotope separation; Ph.D., 1942. Atomic bomb project, Los Alamos (Hans Bethe, Niels Bohr, Enrico Fermi); test explosion at Alamagordo. After World War II teaches mathematical physics at Cornell University; fundamental ideas in quantum electrodynamics crystalize; publishes "A Space-Time View," 1948; Shelter Island Conference (Lamb shift); Poconos Conferences; relations with Julian Schwinger and Shin'ichiro Tomonaga; nature and quality of scientific education in Latin America; industry and science policies. To California Institute of Technology, 1951; problems associated with the nature of superfluid helium; work on the Lamb shift (Bethe, Michel Baranger); work on the law of beta decay and violation of parity (Murray Gell-Mann); biological studies; philosophy of scientific discovery; Geneva Conference on the Peaceful Uses of Atomic Energy; masers (Robert Hellwarth, Frank Lee Vernon, Jr.), 1957; Solvay Conference, 1961. Appraisal of current state of quantum electrodynamics; opinion of the National Academy of Science; Nobel Prize, 1965.

Interviewed by
Charles Weiner and Jagdish Mehra
Interview date
Location
Princeton University, Princeton, New Jersey
Abstract

Arrival in the U.S. in 1930; comparison of social, scientific, general intellectual climates in U.S and Europe; early interest in nuclear physics, relationship with graduate students; beta decay, compound nucleus model, Breit-Wigner formula, early shell model; review articles by Bethe; relation of early meson theory to nuclear physics; nuclear forces; charge independence; journal literature of physics ca. 1937; effectiveness of group-theoretic models in nuclear physics; effectiveness of quantum mechanics for nuclear physics; significant early experimental discoveries in nuclear physics: neutron, deutron, artificial radioactivity; fission, shell model of Mayer and Jensen; rotational levels in nuclei; the specialization of physics; effect of World War II on nuclear physics research; work at Chicago; conferences after the war; branching off of high-energy physics from nuclear physics; work personally regarded as interesting.

Interviewed by
Lillian Hoddeson
Interview date
Location
Murray Hill, New Jersey
Abstract

Born in London 1910; Childhood in Palo Alto, California; undergraduate at UCLA, Caltech, graduate school MIT (Slater, thesis advisor); 1936 to Bell Labs; war related work at Whippany (circa 1 year), patents on radar ideas (Columbia U. Project); fission work with Fisk (National Bureau of Standards); the transistor; Solid State Physics group organized 1945 at Bell Labs under Shockley and Stan Morgan.

Interviewed by
Charles Weiner and Barry Richman
Interview date
Location
Segrè's home, Lafayette, California
Abstract

Founding of the school of physics, Università di Roma, role of Orso Mario Corbino and others in recruiting young physicists; the decision to work on nuclear physics; financial support for and public knowledge of work at the university; contacts with other laboratories in Europe and the U.S.; available technology in Rome, ca. 1930; journal literature; visitors to Rome; circumstances of move to Università di Palermo, 1936; work and facilities in Palermo; early failures of physicists to recognize fission; early uses of cyclotron; mathematics and nuclear physics in 1930s; models of the nucleus and experimental work; circumstances of move to University of California at Berkeley, 1938; experiment and theory in nuclear physics at Berkeley; work on radiochemistry; alteration of half-lives of beta-radioactive substances; detection equipment; effect of work at Los Alamos Scientific Laboratory on nuclear physics; significance of nucleon-nucleon scattering experiments; entry into nuclear physics of students trained in technology during World War II; beginnings of high-energy physics; experimental physics and particle accelerators; fashions in physics; discovery of the antiproton; work considered personally satisfying. Also prominently mentioned are: Edoardo Amaldi, Felix Bloch, Niels Henrik David Bohr, Paul Adrien Maurice Dirac, Michael Faraday, Otto Robert Frisch, Guglielmo, Georg von Hevesy, Ernest Orlando Lawrence, Tullio Levi-Cività, Lo Surdo, Ettore Majorana, Lise Meitner, Ida Noddack, J. Robert Oppenheimer, Carlo Perrier, Franco D. Rasetti, Ernest Rutherford, Glenn Seaborg, Elfriede Segrè, V. Volterra, Chien-Shiung Wu, Hideki Yukawa; Columbia University, and Purdue University.

Interviewed by
Kenneth Ford
Interview date
Location
Telephone conversation
Abstract

Lamb's recollections of carrying the news of fission from Princeton to Columbia (especially to Enrico Fermi) on January 20, 1939. Remarks on being hired by I. I. Rabi and working with John Wheeler.

Interviewed by
Ronald Doel
Interview date
Location
American Physical Society, New York City, New York
Abstract

Topics include his youth and education; his Ph.D. work at Columbia University; building the Nevis cyclotron; nuclear fission; the United Nations Nuclear Cross-section Committee; his appointment as Secretary to the American Physical Society; recollections of Karl Darrow;  Physical Review; Physical Review Letters;  various divisions of the American Physical Society; Committee on the Future of Nuclear Physics; his consulting work with Los Alamos in 1962; schism of APS membership over military patronage and Viet Nam War; the changing role of the American Institute of Physics; impressions of William Koch; recollections of Goudsmit retirement as Physical Review editor; his appointment as Professor of Applied Physics and Engineering at Columbia University in 1978; APS involvement in the Star Wars Project; impressions of collaborations in high-energy physics; personal impressions of the role of physics in society.  Prominently mentioned names include:  Karl Darrow, John Dunning, Maurice Ewing, Enrico Fermi, James Fletcher, William Koch, Willis Lamb, George Pegram, Frank Press, Shirley Quimby, I.I. Rabi, James Rainwater, Emilio Segre, Charles Schwartz,  Henry Smyth, Edward Teller, Harold Urey, Hermann Weyl, John Wheeler, Herbert York,  Also the American Physical Society, American Institute of Physics, Columbia University, American Association of Physics Teachers.

Interviewed by
Ronald Doel
Interview date
Location
American Physical Society, New York City, New York
Abstract

Topics include his youth and education; his Ph.D. work at Columbia University; building the Nevis cyclotron; nuclear fission; the United Nations Nuclear Cross-section Committee; his appointment as Secretary to the American Physical Society; recollections of Karl Darrow;  Physical Review; Physical Review Letters;  various divisions of the American Physical Society; Committee on the Future of Nuclear Physics; his consulting work with Los Alamos in 1962; schism of APS membership over military patronage and Viet Nam War; the changing role of the American Institute of Physics; impressions of William Koch; recollections of Goudsmit retirement as Physical Review editor; his appointment as Professor of Applied Physics and Engineering at Columbia University in 1978; APS involvement in the Star Wars Project; impressions of collaborations in high-energy physics; personal impressions of the role of physics in society.  Prominently mentioned names include:  Karl Darrow, John Dunning, Maurice Ewing, Enrico Fermi, James Fletcher, William Koch, Willis Lamb, George Pegram, Frank Press, Shirley Quimby, I.I. Rabi, James Rainwater, Emilio Segre, Charles Schwartz,  Henry Smyth, Edward Teller, Harold Urey, Hermann Weyl, John Wheeler, Herbert York,  Also the American Physical Society, American Institute of Physics, Columbia University, American Association of Physics Teachers.

Interviewed by
Ronald Doel
Interview date
Location
American Physical Society, New York City, New York
Abstract

Topics include his youth and education; his Ph.D. work at Columbia University; building the Nevis cyclotron; nuclear fission; the United Nations Nuclear Cross-section Committee; his appointment as Secretary to the American Physical Society; recollections of Karl Darrow;  Physical Review; Physical Review Letters;  various divisions of the American Physical Society; Committee on the Future of Nuclear Physics; his consulting work with Los Alamos in 1962; schism of APS membership over military patronage and Viet Nam War; the changing role of the American Institute of Physics; impressions of William Koch; recollections of Goudsmit retirement as Physical Review editor; his appointment as Professor of Applied Physics and Engineering at Columbia University in 1978; APS involvement in the Star Wars Project; impressions of collaborations in high-energy physics; personal impressions of the role of physics in society.  Prominently mentioned names include:  Karl Darrow, John Dunning, Maurice Ewing, Enrico Fermi, James Fletcher, William Koch, Willis Lamb, George Pegram, Frank Press, Shirley Quimby, I.I. Rabi, James Rainwater, Emilio Segre, Charles Schwartz,  Henry Smyth, Edward Teller, Harold Urey, Hermann Weyl, John Wheeler, Herbert York,  Also the American Physical Society, American Institute of Physics, Columbia University, American Association of Physics Teachers.

Interviewed by
Ronald Doel
Interview date
Location
American Physical Society, New York City, New York
Abstract

Topics include his youth and education; his Ph.D. work at Columbia University; building the Nevis cyclotron; nuclear fission; the United Nations Nuclear Cross-section Committee; his appointment as Secretary to the American Physical Society; recollections of Karl Darrow;  Physical Review; Physical Review Letters;  various divisions of the American Physical Society; Committee on the Future of Nuclear Physics; his consulting work with Los Alamos in 1962; schism of APS membership over military patronage and Viet Nam War; the changing role of the American Institute of Physics; impressions of William Koch; recollections of Goudsmit retirement as Physical Review editor; his appointment as Professor of Applied Physics and Engineering at Columbia University in 1978; APS involvement in the Star Wars Project; impressions of collaborations in high-energy physics; personal impressions of the role of physics in society.  Prominently mentioned names include:  Karl Darrow, John Dunning, Maurice Ewing, Enrico Fermi, James Fletcher, William Koch, Willis Lamb, George Pegram, Frank Press, Shirley Quimby, I.I. Rabi, James Rainwater, Emilio Segre, Charles Schwartz,  Henry Smyth, Edward Teller, Harold Urey, Hermann Weyl, John Wheeler, Herbert York,  Also the American Physical Society, American Institute of Physics, Columbia University, American Association of Physics Teachers.