Sign of the Interference Particle Parameter in Conversion-Electron Directional Correlation

It is shown that the interference particle parameter, $b_{\nu }(ML, E{L}^{\prime })$, appearing in the directional correlation of internal-conversion electrons, has the opposite sign from that given in the literature. It is also shown that in the high-energy limit, the directional-correlation pattern for conversion electrons is identical with that of the corresponding gamma rays.