Yu. M. Volkov

Publications (5)18.05 Total impact

• Article: In-source laser spectroscopy of 75,77,78Cu: Direct evidence for a change in the quasiparticle energy sequence in 75,77Cu and an absence of longer-lived isomers in 78Cu

  U Köster, NJ Stone, KT Flanagan, J Rikovska Stone, VN Fedosseev, KL Kratz, BA Marsh, T Materna, L Mathieu, PL Molkanov, MD Seliverstov, O Serot, AM Sjödin, Yu M Volkov
  [show abstract] [hide abstract]
  ABSTRACT: This paper describes measurements on the isotopes 75,77,78Cu by the technique of in-source laser spectroscopy, at the ISOLDE facility, CERN. The role of this technique is briefly discussed in the context of this and other, higher resolution, methods applied to copper isotopes in the range 57−78Cu. The data, analyzed in comparison with previous results on the lighter isotopes 59,63Cu, establish the ground-state nuclear spin of 75,77Cu as 5/2 and yield their magnetic dipole moments as +1.01(5)μN and +1.61(5)μN, respectively. The results on 78Cu show no evidence for long-lived isomerism at this mass number and are consistent with a spin in the range 3–6 and moment of 0.0(4) μN.
  Physical Review C 09/2011; 84:034320. · 3.31 Impact Factor
• Article: … spectroscopy of^{75, 77, 78} Cu: Direct evidence for a change in the quasiparticle energy sequence in^{75, 77} Cu and an absence of longer-lived isomers in^{78} Cu

  U. Köster, N. J. Stone, K. T. Flanagan, J. Rikovska Stone, V. N. Fedosseev, K. L. Kratz, B. A. Marsh, T. Materna, L. Mathieu, P. L. Molkanov, M. D. Seliverstov, O. Serot, A. M. Sjödin, Yu. M. Volkov
  [show abstract] [hide abstract]
  ABSTRACT: This paper describes measurements on the isotopes 75,77,78Cu by the technique of in-source laser spectroscopy, at the ISOLDE facility, CERN. The role of this technique is briefly discussed in the context of this and other, higher resolution, methods applied to copper isotopes in the range 57−78Cu. The data, analyzed in comparison with previous results on the lighter isotopes 59,63Cu, establish the ground-state nuclear spin of 75,77Cu as 5/2 and yield their magnetic dipole moments as +1.01(5)μN and +1.61(5)μN, respectively. The results on 78Cu show no evidence for long-lived isomerism at this mass number and are consistent with a spin in the range 3–6 and moment of 0.0(4) μN.
  Phys. Rev. C. 09/2011; 84(3).
• Article: Nuclear spins and magnetic moments of 71,73,75Cu: inversion of pi2p3/2 and pi1f5/2 levels in 75Cu.

  K T Flanagan, P Vingerhoets, M Avgoulea, J Billowes, M L Bissell, K Blaum, B Cheal, M De Rydt, V N Fedosseev, D H Forest, [......], M D Seliverstov, O Serot, M Schug, M A Sjoedin, J R Stone, N J Stone, H H Stroke, G Tungate, D T Yordanov, Yu M Volkov
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  ABSTRACT: We report the first confirmation of the predicted inversion between the pi2p3/2 and pi1f5/2 nuclear states in the nu(g)9/2 midshell. This was achieved at the ISOLDE facility, by using a combination of in-source laser spectroscopy and collinear laser spectroscopy on the ground states of 71,73,75Cu, which measured the nuclear spin and magnetic moments. The obtained values are mu(71Cu)=+2.2747(8)mu(N), mu(73Cu)=+1.7426(8)mu(N), and mu(75Cu)=+1.0062(13)mu(N) corresponding to spins I=3/2 for 71,73Cu and I=5/2 for 75Cu. The results are in fair agreement with large-scale shell-model calculations.
  Physical Review Letters 10/2009; 103(14):142501. · 7.37 Impact Factor
• Article: Nuclear Spins and Magnetic Moments of Cu71,73,75: Inversion of π2p3/2 and π1f5/2 Levels in Cu75

  K. T. Flanagan, P. Vingerhoets, M. Avgoulea, J. Billowes, M. L. Bissell, K. Blaum, B. Cheal, M. de Rydt, V. N. Fedosseev, D. H. Forest, [......], M. D. Seliverstov, O. Serot, M. Schug, M. A. Sjoedin, J. R. Stone, N. J. Stone, H. H. Stroke, G. Tungate, D. T. Yordanov, Yu. M. Volkov
  [show abstract] [hide abstract]
  ABSTRACT: We report the first confirmation of the predicted inversion between the π2p3/2 and π1f5/2 nuclear states in the νg9/2 midshell. This was achieved at the ISOLDE facility, by using a combination of in-source laser spectroscopy and collinear laser spectroscopy on the ground states of Cu71,73,75, which measured the nuclear spin and magnetic moments. The obtained values are μ(Cu71)=+2.2747(8)μN, μ(Cu73)=+1.7426(8)μN, and μ(Cu75)=+1.0062(13)μN corresponding to spins I=3/2 for Cu71,73 and I=5/2 for Cu75. The results are in fair agreement with large-scale shell-model calculations.
  Physical Review Letters 09/2009; 103(14):142501. · 7.37 Impact Factor
• Source

  Available from: G. Neyens

  Article: Nuclear Spins and Magnetic Moments of 71,73,75Cu: Inversion of π2p3/2 and π1f5/2 Levels in 75Cu

  K. T. Flanagan, P. Vingerhoets, M. Avgoulea, J Billowes, M. L. Bissell, K Blaum, B. Cheal, M. De Rydt, V. N. Fedosseev, D. H. Forest, [......], M. D. Seliverstov, O. Serot, M. Schug, M. A. Sjoedin, J. R. Stone, N J Stone, H. H. Stroke, G. Tungate, D. T. Yordanov, Yu. M. Volkov
  Physical Review Letters, v.103 (2009).