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"Beat" Patterns of Odd-Even Staggering in Octupole Bands of Light Actinides

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"Beat" Patterns of Odd-Even Staggering in Octupole Bands of Light Actinides (EN)
Roussev, R. P.
Daskaloyannis, C.
Karoussos, N.
Minkov, N.
Drenska, S. B.
Bonatsos, Dennis
Raychev, P. P.
info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
2019-12-05
The Δ I = 1 staggering (odd-even staggering) in octupole bands of light actinides. is found to exhibit a "beat" behaviour as a function of the angular momentum J, forcing us to revise the traditional belief that this staggering decreases gradually to, zero and then remains at this zero value. Various algebraic models (spf-Interacting Boson Model, spdf-IBM, Vector Boson Model, Nuclear Vibron Model) predict in their su(3) limits constant staggering for this case, being thus unable to describe the "beat" behaviour. An explanation of the "beat" behaviour is given in terms of two Dunham expansions (expansions in terms of powers of I ( I + 1) ) with slightly different sets of coefficients for the ground state band and the negative parity band, the difference in the values of the coefficients being attributed to Coriolis couplings to other negative parity bands. (EN)
Annual Symposium of the Hellenic Nuclear Physics Society
English
Hellenic Nuclear Physics Society (HNPS) (EN)
2654-0088
2654-007X
Annual Symposium of the Hellenic Nuclear Physics Society; Τόμ. 11 (2002): HNPS2000 and HNPS2002 (EL)
HNPS Advances in Nuclear Physics; Vol. 11 (2002): HNPS2000 and HNPS2002 (EN)
Πνευματική ιδιοκτησία (c) 2019 Dennis Bonatsos, C. Daskaloyannis, S. B. Drenska, N. Karoussos, N. Minkov, P. P. Raychev, R. P. Roussev (EL)
Hellenic Nuclear Physics Society
Annual Symposium of the Hellenic Nuclear Physics Society
Oral contributions



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