Band structure in [sup 79]Y and the question of T=0 pairing
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Band structure in [sup 79]Y and the question of T=0 pairing

S. D. Paul,C. Baktash,W. Satuła,C. J. Gross,I. Birriel,R. M. Clark,R. A. Cunningham,M. Devlin,P. Fallon,A. Galindo-Uribarri,T. Ginter,D. R. Lafosse,J. Kay,F. Lerma,I. Y. Lee,C. Leyland,A. O. Macchiavelli,B. D. Macdonald,S. J. Metcalfe,A. Piechaczek,D. C. Radford,W. Reviol,L. L. Riedinger,D. Rudolph,K. Rykaczewski,D. G. Sarantites,J. X. Saladin,D. Shapira,G. N. Sylvan,S. L. Tabor,K. S. Toth,W. Weintraub,D. F. Winchell,V. Q. Wood,R. Wyss,C. H. Yu;S. D. Paul;C. Baktash;W. Satuła;C. J. Gross;I. Birriel;R. M. Clark;R. A. Cunningham;M. Devlin;P. Fallon;A. Galindo-Uribarri;T. Ginter;D. R. Lafosse;J. Kay;F. Lerma;I. Y. Lee;C. Leyland;A. O. Macchiavelli;B. D. Macdonald;S. J. Metcalfe;A. Piechaczek;D. C. Radford;W. Reviol;L. L. Riedinger;D. Rudolph;K. Rykaczewski;D. G. Sarantites;J. X. Saladin;D. Shapira;G. N. Sylvan;S. L. Tabor;K. S. Toth;W. Weintraub;D. F. Winchell;V. Q. Wood;R. Wyss;C. H. Yu;
AIP Conference Proceedings 1999 Vol. 481 pp. 168-176
136
yu1999aipband

Abstract

Excited states in the N=Z+1 nucleus 79Y were identified using the reaction 28Si(54Fe,p2n)79Y at a 200 MeV beam energy and an experimental set up consisting of an array of Gedetectors and the Recoil Mass Spectrometer at Oak Ridge National Laboratory. With the help of additional γ-γ coincidence data obtained with Gammasphere, these γ-rays were found to form a strongly-coupled rotational band with rigid-rotor-like behavior. Results of conventional Nilsson-Strutinsky cranked shell model calculations, which predict a deformation of β2∼0.4, are in excellent agreement with the properties of this band. Similar calculations for the neighboring N=Z and N=Z+1 nuclei are also in good agreement with experimental data. This suggests that the presence of the putative T=0 neutron-proton pairing does not significantly affect such simple observables as the moments of inertia of these bands at low spins.

Keywords

nuclear fusion neutrons protons moment of inertia energy levels heavy ion-nucleus scattering nuclei with mass number 59 to 89 gamma-ray spectra nuclear shell model iron 54 target silicon 28 reactions yttrium 79

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DOI:
10.1063/1.59547
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https://sciprofiles.com/publication/view/a1000e0be...

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