Accession Number : AD0439695


Title :   RESEARCH INVESTIGATION DIRECTED TOWARD EXTENDING THE USEFUL RANGE OF THE ELECTROMAGNETIC SPECTRUM.


Descriptive Note : Quarterly progress rept. no. 5, 16 Dec 63-15 Mar 64,


Corporate Author : COLUMBIA RADIATION LAB NEW YORK


Personal Author(s) : Novick,R


Report Date : 15 Mar 1964


Pagination or Media Count : 66


Abstract : Further studies have been made of the two-photon decay of the metastable helium ion. Precise values have been obtained for the hyperfine interaction constants in the (3d54p)7P2, 4 states of CR53. Polarization and excitation studies are continuing on the (1s2p)3P-(1s2s)3S transistion in Li II preliminary to the determination of the 3P fine structure. Improved detectors are being developed for the study of metastable autoionizing atomic states. Work is being resumed on the determination of the fine and hyperfine structure of the 3P term of Li I. Light sources and resonance cells are being developed for double-resonance spectroscopy in the radioactive isotopes of lean and copper. Precise measurements have been made of the hyperfine structure of the 3 sub 13-3 sub 03 rotational transistion in NH2D. A new program of molecular magnetic rotation spectroscopy has been undertaken for the analysis of the vibrational structure of selected molecules. Work has been resumed on the experiment designed to determine the interaction between free atoms and crystalline surfaces. (Author)


Descriptors :   *HELIUM , *SOLID STATE PHYSICS , HYPERFINE STRUCTURE , HYPERFINE STRUCTURE , RADIOACTIVE DECAY , LASERS , MAGNETOOPTICS , IONS , CHROMIUM , NUCLEAR RESONANCE , PERTURBATION THEORY , LITHIUM , ELECTRON IRRADIATION , ATOMIC ENERGY LEVELS , ISOTOPES , MOLECULAR BEAMS , NUCLEAR SPINS , RUBY , RUBIDIUM , RADIO ASTRONOMY


Distribution Statement : APPROVED FOR PUBLIC RELEASE