Norman Kroll

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Norman Myles Kroll (born April 6, 1922 in Tulsa , Oklahoma , † August 8, 2004 in La Jolla ) was an American theoretical physicist.

Kroll attended Rice University in Houston from 1938 and Columbia University from 1940 , where he made his bachelor's degree in physics in 1942 and received his doctorate in 1948 under Willis Lamb . During the Second World War, he was in radar research ( magnetron theory) in Columbia from 1943 (like Lamb, headed by Isidor Isaac Rabi ). In 1948/49 he was at the Institute for Advanced Study in Princeton (New Jersey) , where he and Robert Karplus calculated the two-loop contributions for the anomalous magnetic moment of the electron in quantum electrodynamics (QED). He also did pioneering work in QED with Lamb after the war, among other things they were some of the first (with Victor Weisskopf and his student Bruce French) to calculate the Lamb shift relativistically (after Hans Bethe already calculated a rough, non-relativistically Had given). In 1949 he became an assistant professor at Columbia University at the invitation of Rabi, who initially wanted Freeman Dyson , but who had to return to England. In 1962 he moved to the newly founded University of California, San Diego (UCSD). 1963 to 1965 and 1983 to 1988 he was head of the physics faculty there. In 1991 he retired, but remained active in research, for example as a consultant at SLAC until 2000, where he was involved in the development of the new generation of linear accelerators . Among other things, he was visiting scientist at CERN , the Niels Bohr Institute in Copenhagen (a few months in 1955) and the University of Rome.

In addition to QED, Kroll dealt with atomic physics, particle accelerator physics and the theory of free electron lasers .

He was a member of the National Academy of Sciences (1974) and the American Academy of Arts and Sciences and a fellow of the American Physical Society .

Kroll was also a member of the JASON Defense Advisory Group .

He was married and had three daughters and a son.

literature

  • Silvan Schweber QED and the men who made it , Princeton University Press 1994
  • Helmut Rechenberg , Jagdish Mehra The historical development of Quantum Theory , 1982, Vol. 6, Part 1, p. 1042
  • David Kaiser Drawing theories apart- the dispersion of feynman diagrams in postwar physics , University of Chicago Press 2005
  • Kroll, Lamb On the self energy of the bound electron , Physical Review, Vol. 75, 1949, pp. 388-398, abstract
  • Robert Karplus , Kroll Fourth order corrections in quantum electrodynamics and the magnetic moment of the electrons , Physical Review, Vol. 76, 1949, pp. 846-847, Vol. 77, 1950, pp. 536-549

Web links

References

  1. ↑ The calculation was still in a non-covariant form in the style of the much-used textbook by Walter Heitler . The covariant quantum electrodynamic formalism were then of Richard Feynman and Julian Schwinger developed
personal data
SURNAME Kroll, Norman
ALTERNATIVE NAMES Kroll, Norman Myles (full name)
BRIEF DESCRIPTION American physicist
DATE OF BIRTH April 6, 1922
PLACE OF BIRTH Tulsa , Oklahoma
DATE OF DEATH August 8, 2004
Place of death La Jolla