------------------------------------------------------------ RECORD NO.: 872537 INSPEC Abstract No: A76020782 AUTHOR: Pauling, L.; Robinson, A.B. CORP SOURCE: Linus Pauling Inst. of Sci. & Medicine, Menlo Park, CA, USA TITLE: Rotating clusters in nuclei SOURCE: Canadian Journal of Physics, vol.53, no.19, p. 1953-64 ISSN: 0008-4204 CODEN: CJPHAD PLACE OF PUBL: Canada LANGUAGE: English YEAR: 1 Oct. 1975 TREATMENT: T Theoretical or Mathematical ABSTRACT: Values of R, the radius of rotation of the rotating cluster, are calculated from the energy of the lowest 2/sup +/ level of even-even nuclei with the assumption that the cluster consists of p/sup 2/ or n/sup 2/ respectively, for N or P magic, and of a helion ( alpha ) for N or P differing from a magic number by +or-2. The values as a function of A show a zigzag course, which is correlated with the polyspheron structure of the nuclei. If the mantle is not overcrowded the rotating cluster moves within the mantle. When the mantle becomes overcrowded the cluster glides over the surface of the mantle and the value of R increases by one spheron diameter, about 3.2 fm. At certain values of N a change in structure of the nucleus occurs, with increase in radius of the core by half a spheron diameter, permitting the cluster to drop back into the mantle, with decrease in R by half a spheron diameter (10 Refs.) DESCRIPTORS: nuclear cluster model; nuclear structure IDENTIFIERS: nuclei; radius of rotation; rotating cluster; lowest 2/sup +/ level; P magic; helion; magic number; polyspheron structure; mantle; even even nuclei; N magic CLASS CODES: A2160G (Nuclear cluster models) ------------------------------------------------------------