last modified: 19-AUG-1991 | catalog | categories | new | search |

PSR-0298 TNG1.

TNG1, Multistep Statistical Model Hauser-Feshbach

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1. NAME OR DESIGNATION OF PROGRAM:  TNG1.
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2. COMPUTERS
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Program name Package id Status Status date
TNG1 PSR-0298/01 Tested 19-AUG-1991

Machines used:

Package ID Orig. computer Test computer
PSR-0298/01 DEC VAX 6000 Many Computers
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The TNG1 code is a multi-step statistical model based on the Hauser-Feshbach theory including width-fluctuation corrections and pre-compound effects. Statistical  model calculations are frequently performed for medium and heavy nuclei.
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4. METHOD OF SOLUTION

The Hauser-Feshbach part of the TNG1 code is multi-step, but angular distribution can be calculated only for the  binary step. The pre-compound portion is single step, in this case angular distribution is calculated on the basis of partial wave interference (partial relaxation of the random phase approximation in the H-F formalism). Quantities calculated include: elastic, total, inelastic, (n,g), (n,n'), (n,p), (n,a), (n,f), (n,2n), (n,np), (n,na), (n,nf),..., (n,4n),......, secondary particle and gamma ray production spectra, angular distributions of the first outgoing particles, and the production cross sections of isomeric states.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

(n,gx) has not been  included. Dimensions of the transmission coefficients are such that  cross sections can be calculated up to 40 MeV for Ca-40 and 20 MeV for Pu-242. The maximum number of discrete levels is 40, the number  of continuum bins is limited to 40 for each residual nuclide, and the number of outgoing particles is limited to 3.
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6. TYPICAL RUNNING TIME

On the VAX 6000, sample problem 1 took about  two minutes of CPU time (wall clock time).
PSR-0298/01
NEADB compiled and executed the four test cases included in this package on a DEC VAX 8810 and an IBM 3090 computer. CPU times varied on VAX between 2 seconds (case 2) and 3 minutes (case 4); and on IBM between 0.64 seconds and 56.89 seconds on IBM.
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7. UNUSUAL FEATURES OF THE PROGRAM:
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8. RELATED AND AUXILIARY PROGRAMS:
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9. STATUS
Package ID Status date Status
PSR-0298/01 19-AUG-1991 Tested at NEADB
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10. REFERENCES:
PSR-0298/01, included references:
- K. Shibata and C.Y. Fu:
  Recent Improvements of the TNG Statistical Model Code
  ORNL/TM-10093 (August 1986).
- C.Y. Fu:
  Development of a Two-Step Hauser-Feshbach Code with Precompound
  Decays and Gamma-Ray Cascades - A theoretical Tool for Cross
  Section Evaluations
- C.Y. Fu:
  Consistent Calculations of (n,x) and (n,x gamma) Cross Sections
  for 40CA* En=1-20 MeV
  Atomic Data and Nuclear Data Tables 17, 127-156 (1976).
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11. MACHINE REQUIREMENTS:  TNG1 runs on the VAX family of computers.
PSR-0298/01
Main storage requirement is 500K bytes.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
PSR-0298/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED

A FORTRAN 77 compiler is required. The code was compiled with VAX/FORTRAN on the  VAX 6000 under the VAX/VMS operating system.
PSR-0298/01
VMS V5.3 (VAX 8810); MVS/XA (IBM 3090).
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:
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15. NAME AND ESTABLISHMENT OF AUTHOR

Contributed by: Radiation Safety Information Computational Center
                Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
Developed by:   Oak Ridge National Laboratory
                Oak Ridge, Tennessee, U. S. A.
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16. MATERIAL AVAILABLE
PSR-0298/01
File name File description Records
PSR0298_01.001 Information file 175
PSR0298_01.002 TNG1 source program 6748
PSR0298_01.003 VAX command file 14
PSR0298_01.004 IBM JCL file 108
PSR0298_01.005 Input description 551
PSR0298_01.006 Sample input 1 for unit 60 49
PSR0298_01.007 Sample input 1 for unit 63 105
PSR0298_01.008 Sample input 2 for unit 60 18
PSR0298_01.009 Sample input 2 for unit 63 16
PSR0298_01.010 Sample input 3 for unit 60 27
PSR0298_01.011 Sample input 3 for unit 63 117
PSR0298_01.012 Sample input 4 for unit 60 22
PSR0298_01.013 Sample input 4 for unit 63 77
PSR0298_01.014 Sample output 1 on unit 58 (VAX) 5
PSR0298_01.015 Sample output 1 on unit 61 (VAX) 601
PSR0298_01.016 Sample output 1 on unit 62 (VAX) 221
PSR0298_01.017 Sample output 2 on unit 61 (VAX) 103
PSR0298_01.018 Sample output 2 on unit 62 (VAX) 15
PSR0298_01.019 Sample output 3 on unit 58 (VAX) 5
PSR0298_01.020 Sample output 3 on unit 61 (VAX) 604
PSR0298_01.021 Sample output 3 on unit 62 (VAX) 229
PSR0298_01.022 Sample output 4 on unit 58 (VAX) 14
PSR0298_01.023 Sample output 4 on unit 61 (VAX) 550
PSR0298_01.024 Sample output 4 on unit 62 (VAX) 99
PSR0298_01.025 Sample output 1 on unit 58 (IBM) 5
PSR0298_01.026 Sample output 1 on unit 61 (IBM) 602
PSR0298_01.027 Sample output 1 on unit 62 (IBM) 221
PSR0298_01.028 Sample output 2 on unit 61 (IBM) 103
PSR0298_01.029 Sample output 2 on unit 62 (IBM) 15
PSR0298_01.030 Sample output 3 on unit 58 (IBM) 5
PSR0298_01.031 Sample output 3 on unit 61 (IBM) 601
PSR0298_01.032 Sample output 3 on unit 62 (IBM) 229
PSR0298_01.033 Sample output 4 on unit 58 (IBM) 14
PSR0298_01.034 Sample output 4 on unit 61 (IBM) 550
PSR0298_01.035 Sample output 4 on unit 62 (IBM) 99
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17. CATEGORIES
  • A. Cross Section and Resonance Integral Calculations

Keywords: Hauser-Feshbach theory, angular distribution, distorted wave born approximation, neutron cross sections, neutron reactions, nuclear models, optical models, precompound-nucleus emission, statistical models.