EPJ Web of Conferences
Volume 66, 2014INPC 2013 – International Nuclear Physics Conference
|Number of page(s)||4|
|Published online||20 March 2014|
Study of 207Tl126 Produced in Deep-Inelastic Reactions
1 Department of Physics, University of Surrey, Guildford, GU2 7XH, UK
2 H. Niewodniczański Institute of Nuclear Physics, PL-31342 Kraków, Poland
3 Physics Division, Argonne National Laboratory, Argonne, IL 60439 USA
4 Department of Chemistry and Biochemistry, University of Maryland, College Park, MD 20742, USA
5 Department of Physics, University of Massachusetts Lowell, Lowell, MA 01854, USA
6 Department of Nuclear Physics, Research School of Physics and Engineering Australian National University, Canberra, ACT 0200, Australia
7 GSI Helmholtzzentrum für Schwerionenforschung GmbH, D-64291 Darmstadt, Germany
8 Nuclear Engineering Division, Argonne National Laboratory, Argonne, IL 60439, USA
9 National Physical Laboratory, Teddington, TW11 0LW, UK
10 School of Computing, Engineering and Mathematics, University of Brighton, Brighton, BN2 4GL, UK
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Published online: 20 March 2014
Deep-inelastic collisions of a 208Pb beam on a 208Pb target were performed using the ATLAS accelerator at Argonne National Laboratory. The Gammasphere detector array was used for the detection of prompt and delayed gamma-rays of the reaction products.207Tl is one proton away from the 208Pb doubly-magic nucleus. Its low-energy level structure is dominated by the single proton-hole states πs1/2−1, πd3/2−1 and πh11/2−1. The 11/2− state is isomeric with T1/2 = 1.33(11) s. The reaction partner of 207Tl is 209Bi, which has arelatively well established level scheme compared to 207Tl. Cross-coincidences between these two nuclei were used to confirm or establish levels above the 11/2− isomeric state in 207Tl. These states are obtained via breaking of the neutron core. Angular correlation analysis was performed on known transitions in 208Pb, proving the applicability of this method for multipolarity assignment.
© Owned by the authors, published by EDP Sciences, 2014
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