Mass Measurements Demonstrate a Strong N 1⁄4 28 Shell Gap in Argon
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چکیده
Z. Meisel, S. George, S. Ahn, J. Browne, D. Bazin, B. A. Brown, J. F. Carpino, H. Chung, R. H. Cyburt, A. Estradé, M. Famiano, A. Gade, C. Langer, M. Matoš, W. Mittig, F. Montes, D. J. Morrissey, J. Pereira, H. Schatz, J. Schatz, M. Scott, D. Shapira, K. Smith, J. Stevens, W. Tan, O. Tarasov, S. Towers, K. Wimmer, J. R. Winkelbauer, J. Yurkon, and R. G. T. Zegers National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 Michigan, USA Department of Physics and Astronomy, Michigan State University, East Lansing, 48824 Michigan, USA Joint Institute for Nuclear Astrophysics, Michigan State University, East Lansing, 48824 Michigan, USA Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany Department of Physics, Western Michigan University, Kalamazoo, 49008 Michigan, USA School of Physics and Astronomy, The University of Edinburgh, EH8 9YL Edinburgh, United Kingdom Department of Physics and Astronomy, Louisiana State University, Baton Rouge, 70803 Louisiana, USA Department of Chemistry, Michigan State University, East Lansing, 48824 Michigan, USA Oak Ridge National Laboratory, Oak Ridge, 37831 Tennessee, USA Department of Physics, University of Notre Dame, South Bend, 46556 Indiana, USA (Received 27 October 2014; published 15 January 2015)
منابع مشابه
Mass measurements demonstrate a strong N=28 shell gap in argon.
We present results from recent time-of-flight nuclear mass measurements at the National Superconducting Cyclotron Laboratory at Michigan State University. We report the first mass measurements of ^{48}Ar and ^{49}Ar and find atomic mass excesses of -22.28(31) MeV and -17.8(1.1) MeV, respectively. These masses provide strong evidence for the closed shell nature of neutron number N=28 in argon,...
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تاریخ انتشار 2015