Attenuation ofAm241α−γAngular Correlation in Liquid Film Sources

Measurements of the alpha-gamma correlation of ${\mathrm{Am}}^{241}$ have been carried out for liquid sources. Attenuation of the angular correlation pattern with time was measured and ${\lambda }_2$ was determined for HCl, ${\mathrm{H}}_2$S${\mathrm{O}}_4$, and HCl${\mathrm{O}}_4$ media. For HCl and HCl${\mathrm{O}}_4$ ${\lambda }_2=13.5\mathrm{}\pm 2$ per μsec and for ${\mathrm{H}}_2$S${\mathrm{O}}_4$ ${\lambda }_2=21\mathrm{}\pm 2$ per μsec. These attenuation constants were independent of the concentration. The extrapolated value of $A_2$ has been compared with a prediction based on the rotational model.