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Reevaluation of term isotope shifts of low even levels of 4f86s2 configuration and high odd-parity levels of neutral gadolinium atoms
Institution:1. Accelerator Division, TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada;2. Department of Physics and Astronomy, University of Manitoba, Winnipeg, MB R3T 2N2, Canada;3. Department of Physics, Simon Fraser University, Burnaby, BC V5A 1S6, Canada;4. Department of Chemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada;5. Department of Physics, Saint Mary''s University, Halifax, NS B3H 3C3, Canada;1. EN Department, CERN, Geneva CH-1211, Switzerland;2. School of Physics and Astronomy, The University of Manchester, Manchester M13 9PL, United Kingdom;3. Institut für Physik, Johannes Gutenberg-Universität, Mainz D-55099, Germany;4. Instituut voor Kern- en Stralingsfysica, KU Leuven, Leuven B-3001, Belgium;5. Petersburg Nuclear Physics Institute, Gatchina 188350, Russia;6. The Photon Science Institute, The University of Manchester, Manchester, M13 9PL, United Kingdom;7. Institut de Physique Nucléaire d''Orsay, Orsay F-91406, France;8. Department of Physics, New York University, New York, NY 10003, USA
Abstract:Isotope shift ΔT(156Gd–160Gd) of the even-parity energy levels of 4f86s2 and 4f76s26p configurations of neutral gadolinium atoms (Gd I) have been reevaluated using the level isotope shift (ΔT) of two odd-parity levels reported recently. Earlier the isotope shifts of these even-parity energy levels were evaluated using empirical relation. Our extensive isotope shift data has been used for the reevaluation of ΔT values of these low even-parity energy levels which have been utilised for revision of the ΔT values of high-lying odd-parity energy levels of Gd I.
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