A DESCRIPTION OF AN IBM-7090 MONTE CARLO PROGRAM (UNC-90-6) FOR THE SOLUTION OF THE TIME DEPENDENT NEUTRON TRANSPORT PROBLEM IN AN ATMOSPHERE WITH DENSITY DEPENDENT ON HEIGHT,

Abstract

This report describes an IBM-7090 Monte Carlo program for the transport of neutrons from a point monoenergetic source in an atmosphere with density dependent on height, extending up to 700 kilometers above ground zero. The earth is treated as an absorbing surface. The neutron flux is calculated at specified detector regions as a function of time and energy. A simple but effective importance sampling technique is incorporated in the program to improve statistics at detectors many mean free paths from the source. A Final Edit Program is described in this report which can be used to superpose, with specified weighting, the results of various monoenergetic sources. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 15, 1962
Accession Number
AD0622301

Entities

People

  • C. Marotta
  • W. Guber

Tags

DTIC Thesaurus Topics

  • Atmospheres
  • Data Science
  • Detectors
  • Ground Zero
  • Information Science
  • Mean Free Path
  • Neutron Flux
  • Sampling
  • Statistics
  • Transport Ships
  • Warning Systems

Fields of Study

  • Physics

Readers

  • Control Systems Engineering.
  • Research Science/Academic Research
  • Solar Physics