------------------------------------------------------------ RECORD NO.: 2004500 INSPEC Abstract No: A83026183 AUTHOR: Pauling, L. CORP SOURCE: Linus Pauling Inst. of Sci. & Medicine, Palo Alto, CA, USA TITLE: Rules governing the composition of revolving clusters in quasiband and prolate-deformation states of atomic nuclei SOURCE: Proceedings of the National Academy of Sciences of the United States of America, vol.79, no.22, p. 7073-5 ISSN: 0027-8424 CODEN: PNASA6 PLACE OF PUBL: USA LANGUAGE: English YEAR: Nov. 1982 TREATMENT: T Theoretical or Mathematical ABSTRACT: A set of rules, involving the magic and semimagic values of neutron and proton numbers and the proton/neutron ratio, is formulated for the composition of the revolving clusters producing the values of the moment of inertia given by the differences in energy of the adjacent levels in quasibands and bands of nuclei. The cluster compositions assigned with use of these rules to isotopes of Kr, Sr, Zr, Mo, and the actinon nuclei and to successive levels of the ground-state band of /sup 158/Er lead to reasonable values of the radius of revolution (the distance from the center of the nonrevolving sphere to the center of the cluster). These values correspond to a spheron diameter of about 3.20 fm (11 Refs.) DESCRIPTORS: nuclear cluster model; nuclear collective states and giant resonances; nuclear moment of inertia; nuclear size; nuclei with mass number 150 to 189; nuclei with mass number 59 to 89; nuclei with mass number 90 to 149 IDENTIFIERS: neutron numbers; magic values; revolving clusters composition; quasiband states; prolate-deformation states; atomic nuclei; semimagic values; proton numbers; proton/neutron ratio; moment of inertia; Kr; Sr; Zr; Mo; actinon nuclei; ground-state band; /sup 158/Er; radius of revolution; spheron diameter CLASS CODES: A2110F (Nuclear shape, charge, radius, form factors and structure functions); A2110R (Collective structure in nuclear levels); A2160G (Nuclear cluster models); A2750 (Properties of nuclei with 59