1. This work was supported in part by the U.S. Atomic Energy Commission Division of Isotopes Development.
2. L. M. Epstein, J. Chem. Phys. 36, 2731 (1962).JCPSA60021-9606
3. V. I. Goldanski, E. F. Makarov, and V. V. Khrapov, Phys. Letters 3, 344 (1963).PHLTAM0031-9163
4. R. S. Preston, S. S. Hanna, and J. Heberle, Phys. Rev. 128, 2207 (1962).PHRVAO0031-899X
5. Built at Westinghouse Research Laboratories by P. Flinn.