[en] State licenses for disposal of low-level radioactive wastes at commercial burial sites are reviewed. Information concerning license terms and conditions, and license administration has been obtained from questionnaires sent to those six states with commercial radioactive waste burial sites. The questionnaire information has been supplemented by recent reports of the Task Force on Radioactive Waste Management of the Conference of Radiation Control Program Directors and personal communications with knowledgeable officials in state and Federal agencies. A number of problems associated with licensing and license administration by the states have been identified by the Task Force, by the Federal Government Accounting Office (GAO), and by various state and Federal officials. These are summarized and recommendations are included

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[en] The observation of excess emission in the CIDEP-pulse radiolysis study of several radicals is ascribed to S-T/sub +-1/ polarization. Observations of this S-T/sub +-1/ polarization in H. radical reactions provide examples of hyperfine effect while the study of micellar systems and viscous solutions illustrates the effect of restricting radical diffusion

[en] Variable field CIDNP in pulse radiolysis of aqueous dimethyl sulfoxide is described. The products of radiolytically produced radicals are identified, and the radical pair model of CIDNP is applied in analysis of the observed polarization. Various mechanisms of radical formation and reaction are considered. 4 figures; 2 tables

[en] The utility of CIDNP/FTNMR in the study of reaction mechanism in pulse radiolysis of aqueous acetone and acetaldehyde is discussed. Using this technique, one can identify the principle radiolytic products. The high field polarization observed in these products is correlated with that expected from reactions of the radical intermediates most likely present in the solution, enabling identification of important reaction pathways. 6 figures, 5 tables

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[en] The purpose of this paper is to review some of the research concerning radioactive waste releases to freshwater environments and to place these in perspective with respect to present and future needs for assessments of environmental costs

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[en] Applications of magnetic resonance to the study of radiolysis are illustrated. The products of radiolytically produced radicals exhibit CIDNP when examined, seconds after their creation, by NMR. Irradiation with a pulsed electron beam (3 MeV) was carried out in variable magnetic fields and the irradiated solutions were transferred to the NMR sample tube using a fast flow system. Aqueous solutions of methanol, iodomethane, ethylene glycol, acetate, and chloroacetate were studied. In these systems CIDNP in numerous products and starting materials can be observed. The ''primary radicals'' of radiolysis e/sub aq/^- and H play a significant role in the polarization pathways. Applicability of the radical pair model of CIDNP to radiation chemistry is illustrated