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Properties of unbound high-spin states in27Al

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Zeitschrift für Physik A Atoms and Nuclei

Abstract

Selectively excited high-spin states in27Al have been located by the reaction12C(16O,p)27Al. The excitation functions of these states have been measured at incident energiesE cm=18.7 to 30.1 MeV at intervals of 150 keV. They exhibit maxima of presumably non-statistical origin. At four different energies the subsequent decay of the27Al states has been studied by detecting the final heavy recoils with the Munich recoil spectrometer in coincidence with the proton emitted in the first stage of the reaction. Using this new method branching ratios of theγ-, α-, andn-decay have been measured. Based on angular correlation arguments spins up to 27/2ħ have been determined within the experimental accuracy of 1–2ħ. The observations suggest a superdeformed shape of27Al at least in some of the states.

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Author notes

  1. D. Evers

    Present address: Laboratorium Prof. Dr. Berthold, D-7547, Wildbad 1, FRG

  2. P. Konrad

    Present address: Deutsches Patentamt, D-8000, München, FRG

Authors and Affiliations

  1. Sektion Physik, Universität München, Garching, Germany

    I. Weidl, D. Evers, P. Konrad, K. E. G. Löbner, U. Quade, K. Rudolph & S. J. Skorka

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  1. I. Weidl
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  2. D. Evers
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  3. P. Konrad
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  4. K. E. G. Löbner
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  5. U. Quade
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  6. K. Rudolph
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  7. S. J. Skorka
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Additional information

We would like to thank the personnel of the Tandem accelerator for their support.

This work was supported by the Bundesministerium für Forschung und Technologic.

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Weidl, I., Evers, D., Konrad, P. et al. Properties of unbound high-spin states in27Al. Z Physik A 319, 67–80 (1984). https://doi.org/10.1007/BF01429769

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  • DOI: https://doi.org/10.1007/BF01429769

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