Accession Number : AD0858029

Title :   Neutron Fluence in the Atmosphere from an Exoatmospheric Point Source of 14 Mev Neutrons.

Descriptive Note : Master's thesis,

Corporate Author : AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING

Personal Author(s) : Knutson, Gary R.

Report Date : JUN 1969

Pagination or Media Count : 125

Abstract : A method for obtaining an approximate two-dimensional solution is used to perform a 22 energy group calculation of the neutron fluence in the atmosphere resulting from an exoatmospheric point source of 14 Mev neutrons. Results are presented for a source altitude of 250 kilometers and for a source altitude of 500 kilometers. The results of the approximate two-dimensional calculation are compared with the results of a one-group two-dimensional cylindrical S sub n calculation and with a multi-group two-dimensional diffusion calculation.

Descriptors :   *NEUTRON FLUX), (*NUCLEAR EXPLOSIONS, HIGH ALTITUDE, NEUTRON CROSS SECTIONS, ATMOSPHERE MODELS, NEUTRON TRANSPORT THEORY, DIFFUSION, DIFFERENCE EQUATIONS, COMPUTER PROGRAMS, THESES.

Subject Categories : Radioactiv, Radioactive Wastes & Fission Prod
      Nuclear Physics & Elementary Particle Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE