Experimental Test of Parity Conservation in Beta Decay

C. S. Wu, E. Ambler, R. W. Hayward, D. D. Hoppes, R. P. Hudson
1957 Physical Review  
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. A previous publication4 on a possible identification of the Fm'" gave the values of 6.85&0.04 Mev for the alpha-particle energy, and a half-life &10 days. It is a
more » ... 10 days. It is a pleasure to thank the crew of the 60-inch cyclotron for their extremely careful and skillful operation of the machine during the bombardment. We wish to thank Professor Glenn T. Seaborg for his continued interest.
doi:10.1103/physrev.105.1413 fatcat:fgstmcug2jehlgo3rj6fb3h52y