Coulomb excitation of the 242m
Am isomer |
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Authors: | A B Hayes D Cline K J Moody C Y Wu J A Becker M P Carpenter J J Carroll D Gohlke J P Greene A A Hecht R V F Janssens S A Karamian T Lauritsen C J Lister R A Macri R Propri D Seweryniak X Wang R Wheeler S Zhu |
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Institution: | (1) Department of Physics and Astronomy, University of Rochester, Rochester, NY, USA;(2) Lawrence Livermore National Laboratory, Livermore, CA, USA;(3) Physics Division, Argonne National Laboratory, Argonne, IL, USA;(4) Department of Physics and Astronomy, Youngstown State University, Youngstown, OH, USA;(5) Joint Institute for Nuclear Research, Dubna, Russia |
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Abstract: | The 242m Am isomer, a well-known candidate for photodepopulation research, has been studied in this first ever Coulomb excitation of a nearly pure (≈98%) isomer target. Thirty new states, including a new rotational band built on a K π = 6? state, have been identified. Strong K-mixing results in nearly equal populations of the K π=5? and 6? states. Newly identified states have been assigned to the K π=3? rotational band, the lowest states of which are known to decay into the ground-state band. Implications regarding K-mixing and Coulomb excitation paths to the ground state are discussed. |
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