# S. R. de Groot

## Mixed Invariants in Beta-Decay and Symmetries Imposed on the Interaction Hamiltonian

Physical Review

Jun 21 1951

## Cross Terms in β Decay

Physica

Jan 1 1950

Excerpt(s):

Jan 1, 1950

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## INTERFERENCE TERMS AND SYMMETRY PRINCIPLES IN THE THEORY OF BETA DECAY WITH MIXED INVARIANTS

Physica

Dec 1 1952

Excerpt(s):

If β-neutrino angular correlation is taken into account *),a new term, (ε;θατιον`) must be added to (1). For complete determination of all mixing ratio's Cη, recoil experiments with He6 alone are not sufficient, since [spin = 1] for this nuclide. Results with a nuclide, having [spin unequal to 1] (such as 19Ne), are also needed.

## The Angular Correlation Theorem and the Elimination of Interference Terms

Physical Review

May 18 1951