NEA-0675: AMALTHEE, Emission Spectra for N, D, H3, He3, He4 Induced Reactions

OECD Nuclear Energy Agency / L'Agence pour l'énergie nucléaire

OECD-OCDE

[Program Service | Recent programs]

NEA-0675 AMALTHEE. (Abstract last modified 24-FEB-1981)

AMALTHEE, Emission Spectra for N, D, H3, He3, He4 Induced Reactions

Abstract Table of Contents:

OPERATING SYSTEM

OTHER RESTRICTIONS

1. NAME OR DESIGNATION OF PROGRAM - AMALTHEE.

2. COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -

To request or retrieve programs click on the one of the active versions below. A password and special authorization is required.

Explanation of the status codes.

Program-name Package-ID Status AMALTHEE NEA-0675/01 Tested

Machines used: Package-ID Orig.Computer Test Computer NEA-0675/01 CDC 7600 CDC 7600

3. DESCRIPTION OF PROBLEM OR FUNCTION - Calculates the energy spectra of particles emitted in (i,x) and (i,xy) reactions. The incoming (i) and outgoing (x,y) particles can be neutrons, protons, deuterons, tritons, helium-3 or alpha particles.

4. METHOD OF SOLUTION - The master equations of the exciton (pre- equilibrium Griffin) model describing the equilibration of the composite nucleus are solved exactly by a matrix method up to t = infinite.
In this way, pre-equilibrium as well as equilibrium features of a reaction are taken into account. Particle spectra are interpreted without adding any extra evaporative component.

5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM -

6. TYPICAL RUNNING TIME - Compilation with FTN compiler, OPTN=2, takes 7.9 seconds. The sample problem which computes the reaction FE54 + p (28.8 MeV) taking into account 6 simple and 5 double reactions takes 25.4 seconds on the CDC 7600.

7. UNUSUAL FEATURES OF THE PROGRAM - The program is capable of carry- ing out an improved pre-equilibrium calculation that predicts the absolute values of the energy differential cross sections without having to superimpose any evaporative component. The artificial time subdivision previously introduced between the pre-equilibrium and equilibrium parts of a reaction have been removed.

8. RELATED AND AUXILIARY PROGRAMS -

9. STATUS
NEA-0675/01: 24-FEB-1981 Tested at NEADB

10. REFERENCES  -
NEA-0675/01:
- O. Bersillon and L. Faugere:
  "AMALTHEE: A FORTRAN Code for Spectra and Cross Section
   Calculations within the Exciton Model"
  NEANDC(E) 191"L", INDC(FR) 26/L (October 1977).
- L. Faugere and O. Bersillon:
  A New Approach for Interpreting Nuclear Spectra within a
  Preequilibrium Model
  NEANDC(E) 184"L", INDC(FR) 18/L.

11. MACHINE REQUIREMENTS -
Memory requirement on CDC 7600 is 55,000 words.

12. PROGRAMMING LANGUAGE(S) USED -
NEA-0675/01: FORTRAN-IV

13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - SCOPE 2.1.

14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - Single precision (60 bits/word) is used except for matrix calculation which is done in double precision. No special CDC programming instruction is used except PROGRAM in the first card.

15. NAME AND ESTABLISHMENT OF AUTHOR -
O. Bersillon and L. Faugere
Service de Physique Nucleaire
Centre d'Etudes de Bruyeres les Chatel
B.P. 561
92542 Montrouge Cedex (France).

16. MATERIAL AVAILABLE -
NEA-0675/01:
NEA0675_01.001    AMALTHEE SOURCE (FORTRAN)                        2611 records
NEA0675_01.002    S.P. INPUT                                        177 records
NEA0675_01.003    S.P. OUTPUT                                      2654 records
NEA0675_01.004    JCL AND INFORMATION                                21 records

17. CATEGORIES -

- A. Cross Section and Resonance Integral Calculations

Keywords: NUCLEAR MODELS, PARTICLE INTERACTIONS, PRECOMPOUND-NUCLEUS EMISSION

Home - About Us - Work Areas - Data Bank - Publications - Press Room - List of acronyms - Search