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NEA-1737 TALYS-1.2

TALYS-1.2, computes nuclear reactions cross-sections, yields and spectra via a comprehensive set of nuclear models

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1. NAME OR DESIGNATION OF PROGRAM

TALYS-1.2

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2. COMPUTERS
To submit a request, click below on the link of the version you wish to order. Only liaison officers are authorised to submit online requests. Rules for requesters are available here.
No item

Machines used:

No specified machine
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3. DESCRIPTION OF PROGRAM OR FUNCTION

TALYS is software for the simulation of nuclear reactions. Many state-of-the-art nuclear models are included to cover all main reaction mechanisms encountered in light particle-induced nuclear reactions. TALYS provides a complete description of all reaction channels and observables. It is a versatile tool to analyse basic microscopic experiments and to generate nuclear data for applications.

 

Specific features of the TALYS package :

 

  • an exact implementation of many of the latest nuclear models for direct, compound, pre-equilibrium and fission reactions.

  • a continuous, smooth description of reaction mechanisms over a wide energy range (0.001- 200 MeV) and mass number range (12 < A < 339).

  • completely integrated optical model and coupled-channels calculations by the ECIS-06 code

  • incorporation of recent optical model parameterisations for many nuclei, both phenomenological (optionally including dispersion relations) and microscopical.

  • total and partial cross sections, energy spectra, angular distributions, double-differential spectra and recoils.

  • discrete and continuum photon production cross sections.

  • excitation functions for residual nuclide production, including isomeric cross sections.

  • exact modeling of exclusive channel cross sections, e.g. (n; 2np), spectra, and recoils.

  • automatic reference to nuclear structure parameters as masses, discrete levels, resonances, level density parameters, deformation parameters, fission barrier and gamma-ray parameters, generally from the IAEA Reference Input Parameter Library

  • various width fluctuation models for binary compound reactions and, at higher energies, multiple Hauser-Feshbach emission until all reaction channels are closed.

  • various phenomenological and microscopic level density models.

  • various fission models to predict cross sections and fission fragment and product yields.

  • models for pre-equilibrium reactions, and multiple pre-equilibrium reactions up to any order.

  • astrophysical reaction rates using Maxwellian averaging.

  • option to start with an excitation energy distribution instead of a projectile-target combination.

  • use of systematics if an adequate theory for a particular reaction mechanism is not yet available or implemented, or simply as a predictive alternative for more physical nuclear models.

 

The official TALYS website is http://www.talys.eu/home

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4. METHODS

The following model specificities are used:

 

  • Optical Model (OM):  Phenomenology local / global

  • Direct reaction: Spherical OM, Distorted Wave Born Approximation (DWBA), Rotational Coupled Channels (CC), Vibrational CC, Giant resonances, Weak-coupling

  • Preequilibrium: Exciton model - 2-component, p-h LD phenomenology - surface effects, Kalbach systematics - angular distribution, - cluster emission, gamma-ray emission

  • Compound: With fluctuation - Moldauer - GOE triple integral-  HRTW, Hauser-Feshbach, fission competition - isotopic yields, gamma-ray emission, GC and Ignatyuk

  • Multiple emission: Exciton (any order), Hauser-Feshbach, Fission competition - isotopic yields, gamma-ray cascade, all flux depleted, exclusive channels, recoils

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6. TYPICAL RUNNING TIME

CP time requirements are very problem and computer-dependent. Computing time can take from a few seconds to a couple of hours.

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8. RELATED OR AUXILIARY PROGRAMS

ECIS-06, Coupled Channel, Statistical Model, Schroedinger and Dirac Equation, Dispersion Relation; TALYS includes Jacques Raynal's code ECIS-06, which was transformed into a subroutine and slightly modified to enable communication with the rest of TALYS.

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9. STATUS
No status
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10. REFERENCES
  • A.J. Koning, S. Hilaire, S. Goriely:
    Global and local level density models, Nuclear Physics A 810 (2008) 13-76

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11. HARDWARE REQUIREMENTS

Can be installed under linux, unix, and windows.

The author tested TALYS only on Linux systems, but it is likely that it will also run under Windows with minor modifications (e.g. machine.f).

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12. PROGRAMMING LANGUAGE(S) USED
No specified programming language
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15. NAME AND ESTABLISHMENT OF AUTHORS

A.J. Koning and M. Duijvestijn
NRG - Nuclear Research and Consultancy Group,
1755 ZG Petten, The Netherlands

 

S. Hilaire
CEA
Service de Physique et Techniques Nucleaires,
B.P. 12, F-91680 Bruyeres-le-Chatel, France

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16. MATERIAL AVAILABLE
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17. CATEGORIES

Keywords: coupled channel theory, difference equations, direct interactions, fission, multiple emissions, nuclear models, optical models, preequilibrium, statistical models.