Spectroscopy of transfermium nuclei: No-252(102)

Authors :: Herzberg, R.-D.
Amzal, N.
Becker, F.
Butler, P. A.
Chewter, A. J. C.
Cocks, J. F. C.
Dorvaux, Olivier
Eskola, K.
Gerl, J.
Greenlees, Paul
Hammond, N. J.
Hauschild, K.
Helariutta, Kerttuli
Heßberger, F.
Houry, M.
Jones, G. D.
Jones, Peter
Julin, Rauno
Juutinen, Sakari
Kankaanpää, Harri
Kettunen, Heikki
Khoo, T. L.
Korten, W.
Kuusiniemi, Pasi
Coz, Y. Le
Leino, Matti
Lister, C. J.
Lucas, R.
Muikku, Maarit
Nieminen, Päivi
Page, R. D.
Rahkila, Panu
Reiter, P.
Schlegel, Ch.
Scholey, C.
Stezowski, O.
Theisen, Ch.
Trzaska, Wladyslaw
Uusitalo, Juha
Wollersheim, H. J.
Publication Year :: 2001
Publisher :: American Physical Society, 2001.
Abstract: An in-beam study of excited states in the transfermium nucleus 252 No has been performed using the recoil separator RITU together with the JUROSPHERE II array at the University of Jyväskylä. This is the second transfermium nucleus studied in an in-beam experiment. Levels up to spin 20 were populated and compared to levels in 254 No . An upbend is seen at a frequency of 200 keV/ħ corresponding to spin 16. We also use an improved systematics to connect the energy of the lowest 2 + state with its half-life and find that the deformation of both 2 5 2 , 2 5 4 No is slightly larger than previously assumed. peerReviewed

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