347 research outputs found

    Pairing fluctuations and gauge symmetry restoration in rotating superfluid nuclei

    Full text link
    Rapidly rotating nuclei provide us good testing grounds to study the pairing correlations; in fact, the transition from the superfluid to the normal phase is realized at high-spin states. The role played by the pairing correlations is quite different in these two phases: The static (BCS like mean-field) contribution is dominant in the superfluid phase, while the dynamic fluctuations beyond the mean-field approximation are important in the normal phase. The influence of the pairing fluctuations on the high-spin rotational spectra and moments of inertia is discussed.Comment: 14 pages, 5 figures, a contribution to the book "50 Years of Nuclear BCS", edited by R.A.Broglia and V.Zelevinsk

    Magnetic Properties of Precession Modes Built on High-K Multi-quasiparticle States in ^{178}W

    Full text link
    We present an example that shows that the random phase approximation performed on high-K multi-quasiparticle configurations leads to a rotor picture by calculating excitation energies and magnetic properties of ^{178}W. Then we deduce the effective g_R of the high-K rotors and compare it with that of the low-K one.Comment: 6 pages, 3 figures, Prog. Theor. Phys., accepte

    Heuristic quantization of the cranking model

    Full text link
    We propose a simple and systematic method to quantize the cranking model and to calculate the matrix elements of intrinsic operators entering the generalized intensity relations. An example of the application is given to show the Coriolis coupling effects for B(E3) values of the 3- octupole states in Gd isotopes.Comment: 2 pages, Latex, using epsf.sty, 1 postscript figure Talk given at the International School of Nuclear Physics, 18th. Course: "4pi High-Resolution Gamma Ray Spectroscopy and Nuclear Structure", Erice, Italy, Sep. 16-24, 199

    Household Structure in Early Nineteenth Century Ireland

    Get PDF
    In this article, the author proposed the hypothesis that the nuclear family based on the nuclear family system was predominant in early nineteenth century Ireland. However, the stem family must also have existed. The author assumed that such stem families were supported by family conditions and could be explained by a life cycle in the nuclear family system. We divided the subjects of survey ground into 3 areas in consideration of economic regionality, namely regarded Meath and King’s as the first region, Cavan and Fermanagh as the second region, and Galway as the third region and has verified the proposed hypothesis based on the records of the 1821 census returns. In Meath and King’s, it can be said that the facts that the compound family households was predominant among large landholding farmers and that the simple family households was predominant among laborers reflected the family strategies behind each household type. In Cavan and Fermanagh, people adopted the family strategy of manufacturing linen as weavers and spinners. This family strategy among small landholding farmers included early marriage based on the land division system, leading to the predominance of the simple family households. In Galway, the householders in this poor region had their children wait for inheritance so that the children would take care of them in their old age, and these children acted according to this family strategy. This is why there were an unexpectedly large number of compound family households. However, the forms of these households corresponded to their life cycles. Based on the aforementioned analysis, it was found that the nuclear family system was predominant in early nineteenth century Ireland. However in Meath, a region featuring large farmers, the conditions to shift to the stem family system have already existed in the midnineteenth century. Such an understanding allows to position changes in the family structure of Ireland as a smooth process to shift from the nuclear family system to the stem family system.departmental bulletin pape
    corecore