Experimental Test of Parity Conservation in Beta Decay

The branching ratio of the two modes of decay of Fm'", i.e. , E.C. /n, was found to be about 8.5which gives 89.5% decay by electron capture and 10.5% by alpha emission. It was not possible to measure the cross section for the Cf'"(n, 3n)Fm'" reaction because Fm'" could also be produced from other californium isotopes in the target.