New measurement of the {beta}-{gamma} directional correlation in {sup 22}Na

We have measured the {beta}-{gamma} directional correlation coefficient A{sub 22} in the decay of {sup 22}Na to the 2{sup +} 1275 keV excited state of {sup 22}Ne. We find A{sub 22}=(5.3{plus_minus}2.5){times}10{sup {minus}4}. This measurement has higher precision but disagrees with most previous experiments. The value for A{sub 22}, combined with other experimental inputs, gives recoil-order form factors in disagreement with theoretical estimates. This experiment demonstrates the capabilities of Gammasphere as an instrument for precise {beta}-{gamma} correlation measurements. {copyright} {ital 1999} {ital The American Physical Society}