On-line high-resolution mass spectroscopy. Progress report, January 1, 1975--July 1, 1975

The report begins with a brief introduction, summary of activities, and lists of personnel, facilities used, publications, and presentations. Work on xanthine--tyrosine and sulfuric acid esters was completed in the project on 252Cf-plasma desorption mass spectroscopy of involatile molecules. Work is continuing in the following areas: beta--gamma directional correlations and second-class currents in nuclear beta decay (mass-20 system), beta--neutrino directional correlations in mass 8, atomic mass measurements, and 252Cf-plasma desorption mass spectroscopy of large biomolecules. (3 figures) (RWR)