منابع مشابه
Shapes of neutron - rich A ≈ 190 odd - odd nuclei
Following from the prediction by Hilton and Mang [1] of “giant backbending” in 180Hf, caused by a collective oblate rotational band crossing the prolate ground-state band, there has been further theoretical investigation of this phenomenon [2–5]. The calculated shape change is understood to be induced by the effects of rotation alignment. It is related to the prediction of a ground-state shape ...
متن کاملQuasi-Deuteron Configurations in odd-odd N=Z nuclei
The isovector M1 transitions between low-lying T=1 and T=0 states in oddodd N=Z nuclei are analyzed. Simple analytical expressions for M1 transition strengths are derived within a single-j-shell approximation for both j = l+1/2 and j = l − 1/2 cases. The large B(M1) values for the j = l + 1/2 case are attributed to quasi-deuteron configurations. The B(M1) values for the j = l − 1/2 case are fou...
متن کاملAnomalous crossing frequency in odd proton nuclei.
A generic explanation for the recently observed anomalous crossing frequencies in odd proton rare earth nuclei is given. As an example, the proton 1 2 [541] band in 175Ta is discussed in detail by using the angular momentum projection theory. It is shown that the quadrupole pairing interaction is decisive in delaying the crossing point and the changes in crossing frequency along the isotope cha...
متن کاملAnomalous Band Structure in Odd-Odd Nuclei with the Quadrupole-Quadrupole Interaction
We perform shell model calculations in odd-odd nuclei using a quadrupolequadrupole interaction with single-particle splittings chosen so as to obtain the SU(3) results. Elliott had shown that such an interaction gives rotational bands for which the energies go as I(I + 1). This certainly is true for eveneven and for odd-even or even-odd nuclei with K 6= 1/2. We have looked at odd-odd nuclei e.g...
متن کاملMagnetic Dipole Sum Rules for Odd Nuclei
Sum rules for the totaland scissors-mode M1 strength in odd-A nuclei are derived within the single-j interacting boson-fermion model. We discuss the physical content and geometric interpretation of these sum rules and apply them to Er and Dy. We find consistency with the former measurements but not with the latter. 21.60.Fw, 21.10.Re, 23.20.-g, 27.70.+q Typeset using REVTEX 1 The orbital magnet...
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ژورنال
عنوان ژورنال: Progress of Theoretical Physics
سال: 1965
ISSN: 0033-068X
DOI: 10.1143/ptp.33.1050