journal letter

Authors

Stanley L. Ruby(4) Chien-Shiung Wu(3) Brice M. Rustad(2) K. H. Sun(1) G. Shirane(1) W. B. Herrmannsfeldt(1) Richard L. Garwin(1) James S. Allen(1) Leon Lederman(1) Marcel Weinrich(1)

Subjects

angular correlation(3) mössbauer effect(2) beta spectrum experiment(2) Rustad-Ruby experiment(2) parity nonconservation(2) neutrino(1) V–A theory(1) meson physics(1) weak-force unification(1) helium-6(1)

Date	Publication	Author(s)	Citation title	Comments
October 1, 1948	Physical Review	R. D. Albert and C. S. Wu	The Beta-Spectrum of S³⁵	Representative of many beta spectrum studies Wu did with collaborators throughout this period
September 15, 1952	Physical Review	C. S. Wu, B. M. Rustad, V. Perez-Mendez, and L. Lidofsky	The Beta-Spectrum of He⁶	Used Columbia spectrometer to calculate revised comparative lifetime of He6
February 15, 1953	Physical Review	Brice M. Rustad and Stanley L. Ruby	Correlation Between Electron and Recoil Nucleus in He⁶ Decay	First publication of Rustad-Ruby results. Together with Allen-Jentschke, seen as definitive determination of Tensor coupling in GT interactions
March 1, 1953	Physical Review	D. C. Peaslee	The Fermi Term in Beta-Neutrino Correlation	Success of Rustad-Ruby for GT interactions leads to search for similar experiment for F interactions. Peaslee was in the Wu orbit at Columbia and clearly had early knowledge of the Rustad-Ruby results. His letter was submitted before RR was published. Then the Peaslee letter was published in the very next issue.
February 15, 1957	Physical Review	C. S. Wu, E. Ambler, R. W. Hayward, D. D. Hoppes, and R. P. Hudson	Experimental Test of Parity Conservation in Beta Decay	Wu’s famous experiment that confirmed the Lee-Yang suggestion that left-right symmetry is not conserved in weak interactions. Another concurrently published experiment by Garwin and Lederman confirmed the theory in meson decays.
February 15, 1957		Richard L. Garwin, Leon Lederman, and Marcel Weinrich	Observations of the Failure of Conservation of Parity and Charge Conjugation in Meson Decays: the Magnetic Moment of the Free Muon	Garwin-Lederman confirms parity violation in an experiment using mesons
July 15, 1957	Physical Review Letters	W. B. Herrmannsfeldt, D. R. Maxson, P. Stahelin, and J. S. Allen	Electron-Neutrino Angular Correlation in the Positron Decay of Argon³⁵	The first experiment with contadictory results from He-6 . Paper cites Kistner-Schwarzschild-Rustad paper on suitability of A35 for correlation experiment. Received 5/28/57.
December 11, 1957	Physical Review	M. Goldhaber, L. Grodzins, and A. W. Sunyar	Helicity of Neutrinos	More experimental support for VA; He6 is an outlier.
March 1, 1958	Physical Review	E. C. G. Sudarshan and R. E. Marshak	Chirality Invariance and the Universal Fermi Interaction	Sudarshan-Marshak cite private communication with Wu
September 15, 1958	Physical Review Letters	S. L. Ruby, F. D. Schupp, and E. D. Wolley	Effect of Monoenergetic Fast Neutrons on n-Type Germanium	Stan working on radiation effects
March 18, 1960	Review of Scientific Instruments	S. L. RUBY , L. M. EPSTEIN, AND K. H. SUN	Mössbauer Effect in Ferrocyanide	Stan's first Mössbauer paper  the first three-line folded spectrum of 57Fe
April 1, 1962	Physical Review	G. Shirane, W. J. Takei, and S. L. Ruby	Mössbauer Study of Hyperfine Fields and Isomer Shifts in Fe 4 N and ( F e , N i ) 4 N