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- W2849772005 abstract "We perform the first direct mass measurements of neutron-rich calcium isotopes beyond neutron number 34 at the RIKEN Radioactive Isotope Beam Factory by using the time-of-flight magnetic-rigidity technique. The atomic mass excesses of Ca55–57 are determined for the first time to be −18650(160), −13510(250), and −7370(990) keV, respectively. We examine the emergence of neutron magicity at N=34 based on the new atomic masses. The new masses provide experimental evidence for the appearance of a sizable energy gap between the neutron 2p1/2 and 1f5/2 orbitals in Ca54, comparable to the gap between the neutron 2p3/2 and 2p1/2 orbitals in Ca52. For the Ca56 nucleus, an open-shell property in neutrons is suggested.Received 5 January 2018Revised 21 April 2018DOI:https://doi.org/10.1103/PhysRevLett.121.022506© 2018 American Physical SocietyPhysics Subject Headings (PhySH)Research AreasBinding energy & massesRare & new isotopesProperties39 ≤ A ≤ 58Nuclear bindingTechniquesRadioactive beamsNuclear Physics" @default.
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- W2849772005 date "2018-07-11" @default.
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- W2849772005 title "Magic Nature of Neutrons in <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ca</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>54</mml:mn></mml:mrow></mml:mmultiscripts></mml:mrow></mml:math> : First Mass Measurements of <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi>Ca</mml:mi></mml:mrow><mml:mprescripts /><mml:none /><mml:mrow><…" @default.
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- W2849772005 doi "https://doi.org/10.1103/physrevlett.121.022506" @default.
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