The population of metastable states as a probe of relativistic-energy fragmentation reactions
- A.M. Denis Bacelar
- A.M. Bruce
- Zs. Podolyá
- N. Al-Dahan
- M. Gó
- S. Lalkovski
- S. Pietri
- M.V. Ricciardi
- A. Algora
- N. Alkhomashi
- J. Benlliure
- P. Boutachkov
- A. Bracco
- E. Calore
- E. Casarejos
- I.J. Cullen
- A.Y. Deo
- P. Detistov
- Zs. Dombradi
- C. Domingo-Pardo
- M. Doncel
- F. Farinon
- G.F. Farrelly
- H. Geissel
- W. Gelletly
- J. Gerl
- N. Goel
- J. Grȩ
- R. Hoischen
- I. Kojouharov
- N. Kurz
- S. Leoni
- F. Molina
- D. Montanari
- A.I. Morales
- A. Musumarra
- D.R. Napoli
- R. Nicolini
- C. Nociforo
- A. Prochazka
- W. Prokopowicz
- P.H. Regan
- B. Rubio
- D. Rudolph
- K.-H. Schmidt
- H. Schaffner
- S.J. Steer
- K. Steiger
- P. Strmen
- T.P.D. Swan
- I. Szarka
- J.J. Valiente-Dobó
- S. Verma
- P.M. Walker
- H. Weick
- H.J. Wollersheim
DOIAbstract
Isomeric ratios have been measured for high-spin states in Po84198,200,206,208, At85208,209,210,211, Rn86210,211,212,213,214, Fr87208,211,212,213,214, Ra88210,211,212,214,215, and Ac89215 following the projectile fragmentation of a 1 AGeV 238U beam by a 9Be target at GSI Helmholtzzentrum f\ufcr Schwerionenforschung. The fragments were separated in the fragment separator (FRS) and identified by means of energy loss and time-of-flight techniques. They were brought to rest at the centre of the RISING gamma-ray detector array and intensities of gamma rays emitted in the decay of isomeric states with half-lives between 100 ns and 40 \u3bcs and spin values up to 55/2\u210f were used to obtain the corresponding isomeric ratios. The data are compar...
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