last modified: 01-APR-1979 | catalog | categories | new | search |

NEA-0480 ADDELT.

ADDELT, Scattering Law Correlation for Delta Function Phonon Spectra

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1. NAME OR DESIGNATION OF PROGRAM:  ADDELT.
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2. COMPUTERS
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Program name Package id Status Status date
ADDELT NEA-0480/01 Tested 01-APR-1979

Machines used:

Package ID Orig. computer Test computer
NEA-0480/01 IBM 360 series IBM 360 series
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3. NATURE OF PHYSICAL PROBLEM SOLVED

An input scattering law s(alpha,beta) is read and the effects of delta functions in the phonon frequency function are added.
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4. METHOD OF SOLUTION:  See AEEW - M 1200 (UKAEA Report).
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The arrays can be increased in size to incorporate larger problems. Currently the input and output S(alpha,beta) can be described using a 90 x 90 alpha/beta mesh.
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6. TYPICAL RUNNING TIME

3 minutes on ICL 470 to add the effects of 3 delta functions to an input S(alpha,beta) represented at 90 x 90 alpha/beta mesh points.
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7. UNUSUAL FEATURES

UNUSUAL FEATURES OF THE PROGRAM. Deals with delta functions in the phonon frequency function.
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8. RELATED AND AUXILIARY PROGRAMS:  LEAP. S1CALC. PIXSE.
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9. STATUS
Package ID Status date Status
NEA-0480/01 01-APR-1979 Tested at NEADB
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10. REFERENCES: - AEEW M 1200 (UKAEA Report).
- AERE R 3803 (UKAEA Report).
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11. MACHINE REQUIREMENTS

2 work discs.
CLOCK subroutine.
High speed memory - amount depends on array sizes.
Input and output magnetic tape units.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-0480/01 FORTRAN-IV
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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

Operating on ICL system-4 but written to be transportable to other operating systems.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS
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15. NAME AND ESTABLISHMENT OF AUTHOR

Original author - R.C.F. McLatchie
                  AERE Harwell
                  Didcot, Oxfordshire, United Kingdom

Subsequent author - A.T.D. Butland
                    AEEW Winfrith
                    Dorchester, Dorset, United Kingdom.
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16. MATERIAL AVAILABLE
NEA-0480/01
File name File description Records
NEA0480_01.002 INFORMATION 22
NEA0480_01.003 SOURCE PROGRAM -- L30 (F4,EBCDIC) 288
NEA0480_01.004 SOURCE PROGRAM -- L37 (F4,EBCDIC) 255
NEA0480_01.005 SOURCE PROGRAM -- CALPIN (ASSEMBLER) 99
NEA0480_01.006 OVERLAY CARDS 4
NEA0480_01.007 SAMPLE PROBLEM INPUT DATA 4
NEA0480_01.008 SAMPLE PROBLEM PRINTED OUTPUT 11018
NEA0480_01.009 JCL 46
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17. CATEGORIES
  • A. Cross Section and Resonance Integral Calculations

Keywords: lattice vibrations, phonons, scattering law.