Back-Shifted Fermi Gas Model (BSFG)

Level density parameters for the BSFG model obtained by fitting the Fermi-gas model formula to the recommended spacings of s-wave neutron resonances and to the cumulative number of low-lying levels.

Data File (27kB)
README File (1.6kB)

Gilbert-Cameron Model

Level density parameters for the Gilbert-Cameron model obtained by fitting the Fermi-gas model formula to the recommended spacings of s-wave neutron resonances and by matching the corresponding level density to discrete levels.

Data File (31kB)
README File (1.8kB)

Generalized Super-Fluid Model (GSFM)

Level density parameters for the Generalized Superfluid Model (GSFM), which takes into account collective enhancement of the nuclear level density in addition to shell and superfluid effects. The parameters were obtained by fitting the corresponding model formulas to the recommended spacings of s-wave neutron resonances and by matching level densities to discrete levels.

Data File (36kB)
README File (2.4kB)

Code for Calculation of Total Level Densities Using GSFM (RIPL-1)

Retrieval of Total Level Density Parameters

Atomic number (Z)  
Mass number (A)      
(blank for all mass numbers)


   

Plot of Total Level Density Parameters (a-parameters)

Select one of below and input number:
Atomic number  (Z)  
Mass number    (A)  
Neutron number (N)  

X-axis:
       A
       Z
       N
       


  

Plot of Total Level Densities

Atomic number (Z)  
Mass number (A)    


  

HF-BCS Total Level Densities

Total nuclear level densities predicted within the statistical partition function approach. The calculations are based on the realistic microscopic single-particle level schemes determined within the HF-BCS model using the MSk7 Skyrme force [1].

References
[1] S. Goriely, F. Tondeur, J.M. Pearson, Atomic Data Nuclear Data Tables 77, 311 (2001).
[2] P. Demetriou, S. Goriely, Nucl. Phys. A695, 95 (2001).

Data File (total 145732kB)
README File (4.4kB)

Code for Microscopic Calculation of Total Level Densities

Statistical code for level density calculations using microscopic single-particle levels with phenomenological treatment of rotational and vibrational enhancements including their temperature damping.

Retrieval of HF-BCS Total Level Densities

Atomic number (Z)  
Mass number (A)    


  

Constrains on the level schemes ensuring consistency with the HF-BCS level densities

Number of levels up to which the experimental level scheme for a given nucleus is estimated to be complete (N_max) and the energy U_max corresponding to N_max. These values are consistent with the level densities calculated within microscopic HF-BCS approach.

References
[1] P. Demetriou and S. Goriely, Nucl. Phys. A695, 95 (2001).

Data File (51kB)
README File (2.8kB)

Myers-Swiatecki Shell Corrections

Shell corrections calculated with the Myers-Swiatecki mass formula [1].

References
[1] W.D. Myers and W.J. Swiatecki, Ark. Fizik. 36, 343 (1967).

Data File (287kB)
README File (2.3kB)

Retrieval of Level Densities Data and Shell Corrections

Atomic number (Z)  
Mass number (A)      
(blank for all mass numbers)


   

FRDM Single-Particle Levels

Single-particle level schemes calculated with the FRDM approach. The deformations and single-particle level schemes (energies, parities and spins for neutron and proton gases) are provided.

README File (2.1kB)

HF-BCS Single-Particle Levels

Single-particle levels calculated within the Hartree-Fock-BCS model [1]. The deformations, pairing strengths and single-particle level schemes (energies, parities and spins for neutron and proton gases) are provided.

References
[1] S. Goriely, F. Tondeur and J.M. Pearson, At. Data and Nucl. Data Tables 77, 311 (2001).

README File (2.4kB)

Code for Retrieving Single-Particle Levels

Code for extracting single-particle levels from the FRDM and HF-BCS libraries. The internal subroutine GET_SPL can be implemented in any code that needs single-particle levels.

Code (8.0kB)
README File (1.7kB)

Retrieval of Single-Particle Levels

Atomic number (Z)  
Mass number (A)    


   

Code for Microscopic Calculation of p-h State Densities

Code for combinatorial calculations of particle-hole (p-h) state densities including pairing correlations. The current version is a modification [1] of the original code ICAR [2,3].

References
[1] R. Capote and R. Pedrosa, DENSIDAD code (1996), unpublished.
[2] M. Herman and G. Reffo, Phys. Rev. C36, 1546 (1987).
[3] M. Herman and G. Reffo, Comp.Phys.Comm. 47, 103 (1987).

Code (64kB)
README File (6.5kB)

Code for Analytical Calculations of p-h Level Densities

Code provides a set of subroutines for calculation of p-h level densities using analytical expressions for various equidistant and Fermi-gas approaches.

Code (19kB)
README File (16kB)