last modified: 11-MAR-1991 | catalog | categories | new | search |

NEA-1306 LSHINSE.

LSHINSE, Air Scattering Neutron and Gamma Doserates for Complex Shielding Geometry

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1. NAME OR DESIGNATION OF PROGRAM:  LSHINSE.
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2. COMPUTERS
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Program name Package id Status Status date
LSHINSE NEA-1306/01 Tested 11-MAR-1991

Machines used:

Package ID Orig. computer Test computer
NEA-1306/01 IBM PC IBM PC
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3. DESCRIPTION OF PROGRAM OR FUNCTION

The program LSHINSE is used to  calculate the flux and the dose rate caused by gamma radiation emanating from a point source and being scattered in surrounding air.
The program considers all forms of single scattering. Multiple scattering is taken into account in an approximate way by use of buildup factors.
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4. METHOD OF SOLUTION

The program LSHINSE solves the equations for skyshine by use of Simpson integration. The integration limits are chosen such that the partial shielding is approximated by rectangular walls around the source.
In addition, the attenuation of the primary radiation by a room ceiling can be calculated for several materials. By giving the height of the ceiling, the scattering in the air of the room can be  calculated. By specifying energy groups the spectrum of the scattered radiation can be obtained. Valid energy range is 0.1 - 0.2 MeV, where the lower limit is due to uncertainties in the buildup factors.
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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

The program is restricted to rectangular shielding problems involving gamma radiation in the range of 0.1 to 2.0 MeV.
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6. TYPICAL RUNNING TIME:  A few seconds.
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7. UNUSUAL FEATURES OF THE PROGRAM:  None.
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8. RELATED AND AUXILIARY PROGRAMS:  None.
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9. STATUS
Package ID Status date Status
NEA-1306/01 11-MAR-1991 Tested at NEADB
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10. REFERENCES

- K.H. Lindackers:
  Numerical Shielding Calculations
  Thiemig Verlag Muenchen (1962) (in German).
- Gemeinsames Ministerialblatt:
  (Bulletin of the Ministry of the Interior)
  Der Bundesminister des Inneren
  Bonn (1979) (in German).
- R.E. Lunch et al.:
  A Monte-Carlo Calculation of Air-Scattered Gamma Ray
  ORNL-2292.
- F. Rohloff:
  Calculation of Dose Rates of Air-Scattered Neutrons and
  Gamma Rays from Complex Shielding Geometries
  KfA Juel-1626 (1979) (in German).
NEA-1306/01, included references:
- A. Baran, M. Gruen and R. Leicht:
  Program LSHINSE for the Calculation of Flux and Dose Rate from the
  Scattering of Gamma Radiation in Air
  NUKEM Report (November 6, 1989).
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11. MACHINE REQUIREMENTS:  IBM-PC or compatible.
NEA-1306/01
The test cases ran at NEADB on a 80386 PC ith 8087 co-processor.
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12. PROGRAMMING LANGUAGE(S) USED
Package ID Computer language
NEA-1306/01 FORTRAN-77
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13. OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED:  MS DOS/PC DOS.
NEA-1306/01
MSDOS 4.01 with MicroSoft FORTRAN 5.0 compiler.
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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS:  None.
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15. NAME AND ESTABLISHMENT OF AUTHORS

          A. Baran, M. Gruen, R. Leicht
          NUKEM GmbH
          Geschaeftsgebiet Sicherheitstechnik
          Industriestr. 13
          D-8755 Alzenau, Federal Republic of Germany
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16. MATERIAL AVAILABLE
NEA-1306/01
File name File description Records
NEA1306_01.001 Information file 79
NEA1306_01.002 LSHINSE main Fortran source program 537
NEA1306_01.003 LSHINSE1 sample problem 1 input data 6
NEA1306_01.004 LSHINSE2 sample problem 2 input data 6
NEA1306_01.005 LSHINSE1 sample problem 1 output data 87
NEA1306_01.006 LSHINSE2 sample problem 2 output data 85
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17. CATEGORIES
  • G. Radiological Safety, Hazard and Accident Analysis
  • J. Gamma Heating and Shield Design

Keywords: air scattering, buildup, dose rates, shielding.