
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 WRIGHTPATTERSON 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 twodimensional 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 twodimensional calculation are compared with the results of a onegroup twodimensional cylindrical S sub n calculation and with a multigroup twodimensional 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