Nuclear structure study of the neutron deficient cadmium isotopes100, 101, 102Cd |
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Authors: | D Alber A Berger H H Bertschat H Grawe H Haas H Kluge A Kuhnert H E Mahnke K H Maier R Schubart B Spellmeyer X Sun L Wood |
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Institution: | 1. Hahn-Meitner Institut Berlin GmbH und Freie Universit?t Berlin, Glienicker Strasse 100, W-1000, Berlin 39, Federal Republic of Germany 2. CERN-ISOLDE, CH-1211, Genf, Switzerland 3. LLNL, 94550, Livermore, CA, USA 4. Academia Sinica, Lanzhou, P.R. of China
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Abstract: | The neutron-deficient nuclei100,101Cd were identified for the first time in — beam following the reactions58Ni +46,48Ti and58Ni +50Cr at 230 MeV and 245 MeV bombarding energy of the58Ni beams. The-decay of the isotopes100,101,102Cd was studied inp, pp,n, nn, andn prompt and delayed coincidence spectra. Isomers were found with spin and half life {ie1-01}=8+, T1/2=52(5) ns in100Cd, {ie1-02}=(19/2+), T1/2=4.6(4) ns in101Cd and {ie1-03}=8+, T1/2=56(4) ns in102Cd. In a PAD experiment theg-factor of the {ie1-04}=8+ isomer in100Cd was measured to be g=1.24(6). Using the reaction36Ar +70Ge at 135 MeV energy of the36Ar beam, theg-factor and the quadrupole moment of the {ie1-05}=8+ isomer in102Cd were measured to be g=1.29(3) and Q=87(10) fm2, respectively. The spectroscopic results are discussed within a shell model approach using a100Sn core, which accounts well for the electromagnetic properties of the proton aligned isomers. The structure of the spherical neutron states, dominated by the close lying vd5/2, g7/2 orbitals, and the gradually developing quadrupole collectivity are reproduced by the shell model calculations.The authors gratefully acknowledge fruitful discussions with K. Heyde and are indebted to him for communicating unpublished theoretical results. The help of N.A.F.M. Poppelier and A.G.M. van Hees in running the RITSSCHIL code is very much appreciated. |
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Keywords: | PACS" target="_blank">PACS 21 10 Hw 21 10 Ky 21 60 Cs 23 20 Ck 23 20 Lv 27 60 +j |
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