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Quantum Barrier Penetration Studies with Oriented Nuclei: Proton and Neutron Emission from Exotic Isotopes

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Abstract

We report a programme of novel experiments involving direct proton emission and β-delayed proton and neutron emission for exotic nuclei oriented at low temperatures. Full modelling of the quantum tunneling and angular distribution has been made for the first time for these processes. Their study has application in many fields of natural science. The study of barrier effects involving angular momentum and non-spherical deformation can be approached more directly via single-particle emission than via alpha decay, which suffers from complications relating to preformation of the alpha particle. Using the new formalism, predictions are presented for angular distributions of β-delayed neutrons from oriented 137I and of direct proton emission from oriented 147Tm.

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Authors and Affiliations

  1. Department of Physics, Oxford University, Oxford, OX1 3PU, UK

    N. J. Stone, J. Rikovska, Sun Punan & A. Woehr

  2. Department of Chemistry, University of Maryland, College Park, MD 20742, USA

    J. Rikovska & A. Woehr

  3. Department of Physics, Harbin University, Harbin, China

    Sun Punan

Authors
  1. N. J. Stone
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  2. J. Rikovska
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  3. Sun Punan
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  4. A. Woehr
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Stone, N., Rikovska, J., Punan, S. et al. Quantum Barrier Penetration Studies with Oriented Nuclei: Proton and Neutron Emission from Exotic Isotopes. Hyperfine Interactions 136, 143–148 (2001). https://doi.org/10.1023/A:1020579931483

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  • DOI: https://doi.org/10.1023/A:1020579931483

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