PROGRESS REPORT NO. 60 ON NUCLEAR RESEARCH
Activities in the group concerned with the chemistry of fission elements were devoted to investigation of the fundamental chemical behavior of certain elements, development of analytical methods, and a study of new instrumental chemical techniques. In the inorganic nuclear chemistry group, data were obtained on Ag-H/sub 2/ and Na-H/sub 2/ exchange with sulfonated resins and water. Other work is reported on solvent extraction of the Cs salts of several perfluorochloro-carboxylic acids, decay of Ag/sup 115/, delayed proton emission following the beta decay of Ti/sup 41/, decay of Sc/sup 42/ , and computer programs development. Research is also reported on fission of Nb/sup 95/, decay of fission-product Sb nuclides, fission yields of Xe/sup 133/ and Xe/sup 135/, and fission of U233 with deuterons and He ions. In the organic nuclear chemistry group, papers were prepared on O/sub 2/ equilibration of triphenylmethyl benzoate- carbonyl-O/sup 18/ in acetone at 60 deg C, and on catalysis by secondary valence forces. Other work was concerned with a study of dimethyl (cisor trans-4-t- butylcyclohexyl) carbinyl hypochlorite in CCl/sub 4/. A new method was developed for the preparation of diacyl peroxides under unusually mild conditions. Activities in the cosmic ray group were devoted to analysis of data from Explorer XI, study of cosmic-ray diurnal variation, theoretical analysis of nuclear interactions at extreme cosmic ray energies, study of radially expanding plasma in uniform magnetic fields, and study of the interaction of high energy pions in the cloud of a nucleon. The linear accelerator group conducted experiments in which measurements of the neutron energy spectra from photofission of U/sup 238/ and Th/sup 232/ were made. Measurements were also made on the energy resolution of the 2-in. dia gas counter for 5-Mev alpha particles. In the high energy accelerator group activities were concerned with synchrotron operation and photography of extensive air showers. Other work is reported on analysis of lambda deg magnetic moments and angular distributions of pi and kappa scattering, photoproduction of pi /sup -/ mesons from deuterium, proton polarization in deuteron photodisintegration, and the proton Compton effect. In the ONR generator group, study of the (d,p) reaction is reported on a number of gas and thin solid targets from B to Pb. Activities in the radioactivity group were directed to studies concerned with the magnetic moments of 5/sup -/ states in Sn/sup 118/ and Sn/sup 120/, decay of Tl/sup and Au/sup 199/, frequency shift of 14.4-kev photons on traversing radiation fields, and the optical rotation of quartz for 14.4-kev gamma rays. Work in the cyclotron group is reported on ( alpha , alpha ') and (p,p') experiments on medium weight nuclei, and statistical alpha particle-induced emission. Noteworthy developments in the theoretical group include application of the boundary condition potential model to pion and nucleon-nucleon interactions, formulation and application of a surface reaction theory, and application of field theoretical methods to reaction problems. (J.R.D.)
- Research Organization:
- Massachusetts Inst. of Tech., Cambridge. Lab. for Nuclear Science
- DOE Contract Number:
- AT(30-1)-905; AND AT(30-1)-2098
- NSA Number:
- NSA-16-030930
- OSTI ID:
- 4780446
- Report Number(s):
- NYO-2669
- Resource Relation:
- Other Information: Orig. Receipt Date: 31-DEC-62
- Country of Publication:
- United States
- Language:
- English
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