Eur. Phys. J. A 15, 205-208 (2002)
DOI: 10.1140/epja/i2001-10255-3

In-beam spectroscopy of

R.-D. Herzberg¹, N. Amzal¹, J.E. Bastin¹, F. Becker², P.M.T. Brew¹, P.A. Butler¹, A.J.C. Chewter¹, J.F.C. Cocks³, O. Dorvaux³, K. Eskola⁴, J. Gerl⁵, P.T. Greenlees³, N.J. Hammond¹, K. Hauschild², K. Helariutta^{3, 4, 5}, F. Heßberger⁵, M. Houry², A. Hürstel², R.D. Humphreys¹, G.D. Jones¹, P.M. Jones³, R. Julin³, S. Juutinen³, H. Kankaanpää³, H. Kettunen³, T.L. Khoo⁶, W. Korten², P. Kuusiniemi³, Y. Le Coz², M. Leino³, A.P. Leppänen C.J. Lister⁶, R. Lucas², M. Muikku³, P. Nieminen³, R.D. Page¹, T. Page¹, P. Rahkila³, P. Reiter⁷, Ch. Schlegel⁵, C. Scholey¹, G. Sletten⁸, O. Stezowski¹, Ch. Theisen², W.H. Trzaska³, J. Uusitalo³ and H.J. Wollersheim<sup>5

1</sup>  Oliver Lodge Laboratory, University of Liverpool, UK
²  DAPNIA/SPhN CEA-Saclay, France
³  Department of Physics, University of Jyväskylä, Finland
⁴  University of Helsinki, Finland
⁵  GSI Darmstadt, Germany
⁶  Argonne National Laboratory, USA
⁷  Ludwig Maximilians Universität München, Germany
⁸  Nils Bohr Institute, University of Copenhagen, Denmark

rdh@ns.ph.liv.ac.uk

(Received: 21 March 2002 / Published online: 31 October 2002)

Abstract
In-beam conversion electron spectroscopy experiments have been performed on the transfermium nuclei using the conversion electron spectrometer SACRED in nearly collinear geometry in conjunction with the gas-filled separator RITU at the University of Jyväskylä. The experimental setup is discussed and the spectra are compared to Monte Carlo simulations. The implications for the ground-state configuration of are discussed.

PACS
21.10.-k - Properties of nuclei; nuclear energy levels.
23.20.Lv - Gamma transitions and level energies.
23.20.Nx - Internal conversion and extranuclear effects.
27.90.+b - .

© Società Italiana di Fisica, Springer-Verlag 2002