Harry J. Lipkin

The American-born Israeli nuclear physicist who organized the 1957 Rehovoth Conference on Nuclear Structure at which the Rustad-Ruby experiment was called into question. Lipkin was among the first to recognize the importance of the discovery of recoiless nuclear resonance by Rudolf Mössbauer, naming it the Mössbauer Effect. Lipkin and Stanley Ruby, also an early Mössbauer researcher, crossed paths many times later at Israel's Weizman Institute and Argonne National Labs in Illinois.

RMS: Chapter 6 The Early Developments of the Theory of the Mössbauer Effect

Harry J. Lipkin
Jan 1 2012

I was spending a year at the University of Illinois at Urbana, following up my own experimental research program in beta ray polarization measurements after the discovery of parity nonconservation. I directed Hans Frauenfelder’s group of students and postdocs in their polarization experiments which paralleled those of my group at Weizmann, while Hans was on sabbatical at CERN. We both knew that the parity game was closing down. The exciting controversial days of exploring the weak interaction in beta decay were over.

Post-Conference Summary of Recent Developments in Beta-Decay

H. J. Lipkin
Proceedings of the Rehovot Conference on Nuclear Structure
Jan 1 1958

Added in proof
Reports on “non-classical recoil experiments” including Goldhaber, Grodzins, Sunyar


Results presented at the conference indicated the need for further experiments involving measurement of the direction of neutrino emission in order to distinguish between the β-interactions S-T and V-A. Within a few months the new “non-classical recoil experiment” has been developed, in which the polarization of radiation following β-decay is measured relative to the direction of the recoil.

Conference on Nuclear Structure at Weizmann Institute, Rehovoth, Israel

Sep 17 1957

Contradictions among classical recoil experiments are highlighted at international physics conference featuring Lee and Wu. 

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