First Direct Mass Measurements of Nuclides around Z=100 with a Multireflection Time-of-Flight Mass Spectrograph

Physical Review Letters
Y ItoS Yamaki

Abstract

The masses of ^{246}Es, ^{251}Fm, and the transfermium nuclei ^{249-252}Md and ^{254}No, produced by hot- and cold-fusion reactions, in the vicinity of the deformed N=152 neutron shell closure, have been directly measured using a multireflection time-of-flight mass spectrograph. The masses of ^{246}Es and ^{249,250,252}Md were measured for the first time. Using the masses of ^{249,250}Md as anchor points for α decay chains, the masses of heavier nuclei, up to ^{261}Bh and ^{266}Mt, were determined. These new masses were compared with theoretical global mass models and demonstrated to be in good agreement with macroscopic-microscopic models in this region. The empirical shell gap parameter δ_{2n} derived from three isotopic masses was updated with the new masses and corroborates the existence of the deformed N=152 neutron shell closure for Md and Lr.

References

Jul 1, 1995·Physical Review C: Nuclear Physics·J Duflo, A P Zuker
Aug 1, 1996·Physical Review C: Nuclear Physics·Y A LazarevK J Moody
Feb 18, 2005·Nature·S CwiokW Nazarewicz
May 16, 2007·Physical Review Letters·A ChatillonP-H Heenen
Aug 11, 2012·Science·E Minaya RamirezC Weber
Oct 1, 2013·Physical Review Letters·D RudolphN Wiehl

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Citations

Oct 3, 2020·The Review of Scientific Instruments·S LohseD Rodríguez
Jul 11, 2021·The Review of Scientific Instruments·Paul Fischer, Lutz Schweikhard

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