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Gamma Strength Functions and the Brink-Axel Hypothesis

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Compound-Nuclear Reactions

Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 254))

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Abstract

Experimental tests of the Brink-Axel hypothesis relating gamma strength functions (GSF) deduced from absorption and emission experiments are discussed. High-resolution inelastic proton scattering at energies of a few hundred MeV and at very forward angles including 0∘ presents a new approach to test the validity of the BA hypothesis in the energy region of the pygmy dipole resonance. Such data not only provide the GSF but also the level density (LD) and thus permit an independent test of their model-dependent decomposition in the Oslo method.

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Acknowledgements

I thank S. Bassauer for his contribution to the analysis of the present results and A. Tamii and the collaborators at RCNP for the excellent experiments. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation)—Project number 279384907–SFB 1245.

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Authors and Affiliations

  1. Institut für Kernphysik, Technische Universität Darmstadt, Darmstadt, Germany

    Peter von Neumann-Cosel

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  1. Peter von Neumann-Cosel
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Correspondence to Peter von Neumann-Cosel .

Editor information

Editors and Affiliations

  1. Lawrence Livermore National Laboratory, Livermore, CA, USA

    Jutta Escher

  2. Department of Physics, Yale University, New Haven, CT, USA

    Yoram Alhassid

  3. Lawrence Berkeley National Laboratory, Berkeley, CA, USA

    Lee A. Bernstein

  4. National Nuclear Data Center, Brookhaven National Laboratory, Upton, NY, USA

    David Brown

  5. North Carolina State University, Raleigh, NC, USA

    Carla Fröhlich

  6. Los Alamos National Laboratory, Los Alamos, NM, USA

    Patrick Talou

  7. Lawrence Livermore National Laboratory, Livermore, CA, USA

    Walid Younes

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© 2021 This is a U.S. government work and not under copyright protection in the U.S.; foreign copyright protection may apply

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Neumann-Cosel, P.v. (2021). Gamma Strength Functions and the Brink-Axel Hypothesis. In: Escher, J., et al. Compound-Nuclear Reactions . Springer Proceedings in Physics, vol 254. Springer, Cham. https://doi.org/10.1007/978-3-030-58082-7_18

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