THE TRANSPORT OF NEUTRONS THROUGH THE ATMOSPHERE FROM A MONOENERGETIC SOURCE VERSUS TIME OF FLIGHT

Abstract

A set of tables is presented depicting the theoretical neutron energy spectrum per initial neutron as a function of transport time for a burst height of 125,000 feet and six sampling altitudes ranging from 50,000 feet to 125,000 feet. These calculations are based on a Monte Carlo code. These data were compared with a previous calculation for the same burst altitude; however, that calculation did not have the time parameter included. Inclusion of the time parameter has not altered the total integrated scattered neutron flux. In the majority of cases, the peak flux occurs in the first 2 milliseconds for initial neutron energies of 14, 10, and 5 Mev; however, for an initial energy of 2 Mev, the peak usually occurs between 3 and 5 milliseconds. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1960
Accession Number
AD0256081

Entities

People

  • Alexander E. Jr. Anthony
  • Donald L. Summers
  • Ellen M. Hippeli

Organizations

  • Air Force Special Weapons Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Altitude
  • Atmospheres
  • Inclusions
  • Neutron Flux
  • Reactor Lattice Parameters
  • Sampling
  • Spectra
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Solar Physics