Elsevier

Nuclear Physics A

Volume 518, Issue 3, 19 November 1990, Pages 536-560
Nuclear Physics A

194,198Pt(p, ṕ) reaction and the interacting boson model

https://doi.org/10.1016/0375-9474(90)90145-CGet rights and content

Abstract

Angular distributions of dσ/dΩ and Ay were measured for low-lying collective states, Jπ = 01+, 2+1, 2+2, 4+1, 4+2, 4+3 in 194,198pt using 135 MeV polarized protons. Coupled-channels analysis of the data indicates large E4 moments for the 4i (i = 1, 2, 3) states in both the isotopes. These data have been analyzed in the framework of the interacting boson model (IBM). Although the standard IBM-1 scheme with only s- and d-bosons can describe the E2 properties of both isotopes quite well, a more generalized version which also includes a g-boson is needed to correctly reproduce simultaneously both the E2 and E4 data. Another model using the “projected IBM-2” parameters gives similar results.

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    1

    Current address: School of Physics and Astronomy, University of Minnesota, Minneapolis, MN 55455, USA.

    2

    Current address: Physics Department, Bowdoin College, Brunswick, ME 04011, USA.

    3

    Current address: Lockheed Missiles and Space Company, P.O. Box 1103, Huntsville, AL 35807, USA.

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