Analysis of the ground-state band and a closely related intercalated band of ²³⁵₉₂U₁₄₃ by the two-revolving-cluster model with consideration of symmetric and antisymmetric resonance of the two dissimilar clusters
The reported ground-state band of ²³⁵₉₂U₁₄₃ extending from J = 7/2- to 51/2- is found to be two intercalated bands, one beginning with 7/2- and the other with 9/2-, each with ΔJ = 2. Analysis by the two-resonating-cluster model leads to 3875 Da.fm² for the moment of inertia for the first few levels, then increasing by centrifugal stretching. This value is interpreted by the structure p⁷⁰n¹¹² for the central sphere with clusters p¹¹n¹⁶ and p¹¹n¹⁵ with radius of revolution R = 8.55 fm. The major principal axis of the Poinsot ellipsoid is taken to be determined by an unquantized number K, with vector intermediate in orientation between L and J. The values of K are found by empirical analysis to equal L + 0.28, with the theory of rotation of the ellipsoid giving L + 0.28 for 7/2-, slowly decreasing to L + 0.251 for 51/2-. The 7/2- band is based on odd values of L (negative parity) and the 9/2- band on even values (positive parity). Negative parity for both bands is achieved by symmetric resonance of the two dissimilar clusters in the 7/2- band and antisymmetric resonance in the 9/2- band.
Additional Information© 1993 by the National Academy of Sciences. Contributed by Linus Pauling, March 5, 1993. The publication costs of this article were defrayed in part by page charge payment. This article must therefore be hereby marked "advertisement" in accordance with 18 U.S.C. §1734 solely to indicate this fact.
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