An Experimental Investigation of the Beta-Gamma Angular Correlation in Beta Decay

The beta-gamma angular correlation was investigated in the isotopes Na²⁴, Co⁶⁰, Ru¹⁰³, Gd¹¹⁵, Ir¹⁹², and Au¹⁹⁸. Measurements were made at ten angles between 45 to 180 degrees. No departure from spherical symmetry was found in any case, within the statistical error (standard deviation 1% or 2% in most cases). Tests and arguments are set forth to establish that the lack of correlation exists in fact at the atom and probably at the nucleus itself. The discrepancy between the results of this experiment and the predictions of the beta ray theory is discussed.