NEA-0829 SCAT-2 & SCAT-2B.

1. NAME OR DESIGNATION OF PROGRAM:  SCAT-2 & SCAT-2B.

3. DESCRIPTION OF PROBLEM OR FUNCTION

SCAT-2 is designed as a fast, easy-to-use program to calculate total cross sections, elastic scattering cross sections and their angular distributions, and transmission coefficients from the optical model of a spherical nucleus.
  
The calculation is performed at a specified set of energies for one  of the following incident particles: neutron, proton, deuteron, triton, helium-3 or alpha.
  
The nuclear potential contains the following terms: Coulomb, a real  volume Woods-Saxon potential, an imaginary surface Woods-Saxon or Gaussian potential, an imaginary volume Woods-Saxon potential, and a spin-orbit potential.
  
SCAT-2B extends the incident particles to include also heavy ions.

Summary of modifications in SCAT-2 (2010 version):
- The optical potential has been extended to include an imaginary spin-orbit component and the Koning-Delaroche optical model parameterization has been incorporated.
- The maximum number of input energies was increased from 50 to 150.

4. METHOD OF SOLUTION

A partial wave expansion of the Schroedinger equation is numerically integrated using Cowell's method, described  in the reference by Melkanoff.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

A maximum of 50 incident particle energies can be specified.

SCAT-2 (2010 version): A maximum of 150 incident particle energies can be specified.

7. UNUSUAL FEATURES OF THE PROGRAM

To reduce input requirements to a  minimum, the most frequently used choices of parameters to define the nuclear potential have been incorporated into the coding.

8. RELATED AND AUXILIARY PROGRAMS:

10. REFERENCES

- M.A. Melkanoff et al.: "Methods in Computational Physics", Vol. 6 (1966).
- A.J. Koning, J.P. Delaroche, "New neutron and proton optical models," Nuclear Model Parameter Testing for Nuclear Data Evaluation, INDC(NDS)-431, Vienna, 2002, pp. 55-76.

- O. Bersillon:
SCAT2: Un programme de modele optique spherique, CEA-N-2227 (October 1981)
- Description of modifications and plots of output data (2010)
- A. Prince, G. Reffo and E. Sartori:
Report on the International Nuclear Model Code Intercomparison Spherical
Optical and Statistical Model Study (NEANDC-152"A", INDC(NEA)4; 3 October, 1983)
- O. Bersillon:
  SCAT2: Un programme de modele optique spherique
  CEA-N-2227 (October 1981).
- A. Prince, G. Reffo and E. Sartori:
  Report on the International Nuclear Model Code Intercomparison
  Spherical Optical and Statistical Model Study
  NEANDC-152"A", INDC(NEA)4 (3 October, 1983).
- O. Bersillon:
SCAT2: Un programme de modele optique spherique, CEA-N-2227 (October 1981)
- Description of modifications and plots of output data (2010)
- A. Prince, G. Reffo and E. Sartori:
Report on the International Nuclear Model Code Intercomparison Spherical
Optical and Statistical Model Study (NEANDC-152"A", INDC(NEA)4; 3 October, 1983)

11. HARDWARE REQUIREMENTS: MACHINE REQUIREMENTS

SCAT-2B was tested at the NEA DB on a PC INTEL Pentium-III 500Mhz and IBM/RISC 6000.

SCAT-2 (2010 version): Intel Core Duo CPU T2350 used at the Bucharest University.

Tested at the NEA Databank on:
- COMPUTER : Dell INTEL Duo E6550,  2.33 GHz (for Windows)
- OPERATING SYSTEM : DOS, under Windows XP Pro SP 3
- COMPILER: lahey/ Fujitsu F 95  v7.1 (Windows)

13. SOFTWARE REQUIREMENTS: OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

VAX 8810: VMS V5.4-2 with compiler VAX FORTRAN-77; IBM 3090: MVS/XA with compiler VS FORTRAN V.2; IBM-PC/AT: MS-DOS V3.20 with compiler MS FORTRAN V5.00.

SCAT-2B was tested at the NEA DB with:
- MS-DOS under WINDOWS 98, Lahey Fortran 95 Version 5.50 (lf95) compiler,
- MS-DOS under WINDOWS 98, Compaq Visual Fortran 6.0 A (df) compiler,
- Red Hat Linux 6.1 (kernel 2.2.12-20), g77 v0.5.24 compiler,
- Aix 3.2, xlf compiler.

SCAT-2 (2010 version):
- MS-DOS under WINDOWS 98 with Lahey 77 Version 5.1 compiler
- WINDOWS XP with g77 compiler
used at the Bucharest University.

15. NAME AND ESTABLISHMENT OF AUTHOR

SCAT-2:
-------
O. Bersillon
Centre d'Etudes de Bruyeres-le-Chatel
F-92542 MONTROUGE CEDEX
France
  
SCAT-2 (March 2010 version):
---------------------------
Vladimir MANEA
Bucharest University
Faculty of Physics
POB MG-11
76900 BUCHAREST Magurele
ROMANIA
  
SCAT-2B:
--------
Prof. Anisoara CONSTANTINESCU
Bucharest University
Faculty of Physics
POB MG-11
76900 BUCHAREST Magurele
ROMANIA

SCAT2.F source code
SCAT2.EXE Executable file
SCAT2.DAT File containing names of Input/Output files
OCA.IN Input file
SOCA.LST Output file
SOCA.GNA Output file
SOCA.SCR Output file
SOCA.SUM Output file
OCA.EXP Experimental data
SOCA.TXT Graph of the SOCA.SUM results produced by gnuplot
SCAT2B.PDF Manual in PDF format

- Source code - SCAT2.FOR
- Executable file - SCAT2.EXE
- File containing names of Input/Output files - SCAT2.DAT
- Test Problems
  - Total cross-section of n+(Au-197) reaction:
     - Becchetti-Greenless calculus:
         Input file - Au197Bec.inp
         Output file - Au197Bec.lst
         Output file - Au197Bec.sum
     - Koning-Delaroche calculus:
         Input file - Au197Kon.inp
         Output file - Au197Kon.lst
         Output file - Au197Kon.sum
  - Elastic differential cross-section of (Au-197)(n,n)
     - Becchetti-Greenless calculus:
         Input file - Au7BecDn.inp
         Output file - Au7BecDn.lst
         Output file - Au7BecDn.sum
     - Koning-Delaroche calculus:
         Input file - Au7KonDn.inp
         Output file - Au7KonDn.lst
         Output file - Au7KonDn.sum
  - Elastic differential cross-section of (Au-197)(p,p)
     - Becchetti-Greenless calculus:
         Input file - Sn0BecDp.inp
         Output file - Sn0BecDp.lst
         Output file - Sn0BecDp.sum
     - Koning-Delaroche calculus:
         Input file - Sn0KonDp.inp
         Output file - Sn0KonDp.lst
         Output file - Sn0KonDp.sum
- Description of modifications and plots of output data (SCAT2.pdf)
- The Computer Code SCAT-2 (Note CEA-N-2227)
- NEANDC-152"A" report

File name	File description	Records
SCAT2.INF	Information file	117
SCAT2.FOR	SCAT2 FORTRAN source	2792
SCAT2.EXE	SCAT2 executable file (MSDOS)	2346
SCAT2.DAT	Input to SCAT2	5
SCAT2TST.DAT	Sample input to SCAT2	15
PC.JCL	PC JCL to compile, link & run	7
VAX.JCL	VAX JCL to compile, link & run	10
IBM.JCL	IBM JCL to compile, link & run	122
SCAT2P.LST	Sample output (Listing, PC)	585
SCAT2P.SUM	Sample output (Summary, PC)	370
SCAT2P.GNA	Sample output (GNASH fmt, PC)	93
SCAT2V.LST	Sample output (Listing, VAX)	586
SCAT2V.SUM	Sample output (Summary, VAX)	370
SCAT2V.GNA	Sample output (GNASH fmt, VAX)	93
SCAT2I.LST	Sample output (Listing, IBM)	587
SCAT2I.SUM	Sample output (Summary, IBM)	370
SCAT2I.GNA	Sample output (GNASH fmt, IBM)	93