Nuclear models and structure information implemented in TALYS

See the TALYS manualfor a full description of all models.

1. Optical Model:

  • Optical model potential (OMP) calculations are performed with ECIS-2006
  • Neutrons/protons: Koning-Delaroche phenomenological spherical OMP (local / global), Soukhovitskii deformed OMP for actinides, user-defined OMP's, dispersive OMP's, and Hartee-Fock-Bogolyubov based JLM OMP's
  • Complex particles: Simplified Watanabe folding approach

    2. Direct reactions:

    • Direct reaction calculations  are performed with ECIS-2006
    • DWBA for (near) spherical nuclei
    • Coupled-channels for deformed nuclei (symmetric rotational / harmonic vibrational / vibration-rotational / asymmetric rotational)
    • Weak-coupling model for odd nuclei
    • Giant resonances (Kalbach macroscopic phenomenological model)

    3. Compound reactions:

    • Hauser-Feshbach
    • Width-fluctuation models (Moldauer / GOE triple integral / HRTW)
    • Blatt-Biedenharn formalism for angular distributions
    • Astrophysical reaction rates by Maxwellian folding of the cross sections
    • Initial excited nucleus with excitation energy population

    4. Level densities:

    • Gilbert-Cameron model
    • Back-shifted Fermi gas model
    • Superfluid model
    • Ignatyuk damping of shell effects in the level density parameter
    • Rotational / vibrational effects
    • Microscopic level densities, based on Hartree-Fock-Bogolyubov model, parity-dependent

    5. Pre-equilibrium reactions:

    • Two-component excition model
    • Photon exciton model (Akkermans and Gruppelaar)
    • Continuum stripping, pick-up, knock-out and stripping (Kalbach phenomenological model)
    • Angular distribution (Kalbach systematics)

    6. Multiple emission:

    • Multiple pre-equilibrium emission for any number of particles
    • Multple Hauser-Feshbach emission for any number of particles

    7. Fission:

    • Hill-Wheeler transmission coefficients
    • single / double / triple humped barriers
    • Class II (III) states
    • Experimental barrier parameters
    • Rotating-Liquid-Drop model
    • Rotating-Finite-Range model
    • Microscopic barrier parameters
    • WKB approximation of fission path
    • Fission fragment mass distributions (Multi-Model Random-Neck-Rupture model)
    • Fission fragment charge disitributions (scission-point model)

    8. Gamma-ray transmission coefficients:

    • Brink-Axel Lorentzian
    • Kopecky-Uhl Generalised Lorentzian
    • Microscopic gamma-ray strength functions, based on Hartree-Fock-Bogolyubov model
    • Photoabsorption cross sections: (GDR + quasi-deuteron (Chadwick)

    9. Recoils:

    • Exact approach
    • Method of average velocity

    10. Nuclear structure database (based on RIPL-2):

    • Abundancies
    • Discrete levels
    • Deformations
    • Masses
    • Radial densities
    • Level density parameters and tabulated level densities
    • Resonance parameters
    • Fission barrier parameters
    • Fission paths
    • Thermal cross sections
    • Microscopic level densities
    • Prescission shapes