Author(s)
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Huang, W J (CSNSM, Orsay ; Heidelberg, Max Planck Inst.) ; Atanasov, D (CERN) ; Audi, G (CSNSM, Orsay) ; Blaum, K (Heidelberg, Max Planck Inst.) ; Cakirli, R B (Istanbul U.) ; Herlert, A (FAIR, Darmstadt) ; Kowalska, M (CERN) ; Kreim, S (Heidelberg, Max Planck Inst. ; CERN) ; Litvinov, Yu A (Darmstadt, GSI) ; Lunney, D (CSNSM, Orsay) ; Manea, V (CSNSM, Orsay) ; Mougeot, M (CSNSM, Orsay ; Heidelberg, Max Planck Inst.) ; Rosenbusch, M (Nishina Ctr., RIKEN) ; Schweikhard, L (Greifswald U.) ; Welker, A (CERN) ; Wienholtz, F (Greifswald U.) ; Wolf, R N (Heidelberg, Max Planck Inst. ; Greifswald U.) ; Zuber, K (Dresden, Tech. U.) |
Abstract
| High-precision mass measurements of stable and beta-decaying nuclides $^{52-57}$Cr, $^{55}$Mn, $^{56,59}$Fe, $^{59}$Co, $^{75, 77-79}$Ga, and the lanthanide nuclides $^{140}$Ce, $^{140}$Nd, $^{160}$Yb, $^{168}$Lu, $^{178}$Yb have been performed with the Penning-trap mass spectrometer ISOLTRAP at ISOLDE/CERN. The new data are entered into the Atomic Mass Evaluation and improve the accuracy of masses along the valley of stability, strengthening the so-called backbone. The mass of neutron-deficient $^{168}$Lu in its isomeric state has been measured directly. The mass of neutron-rich $^{178}$Yb indicates a change of nuclear structure approaching the double harmonic-oscillator shell closure for $ Z=70$ and $ N=112$. |