Difference between revisions of "Neutron pinball"

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[[File:DeflectionAngle.png|400 px]]
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[[File:DeflectionAngle.png|400 px|thumb|center|Non-zero deflection angles of neutrons] ]
  
  
 
Go back [[Elastic scattering]]
 
Go back [[Elastic scattering]]

Revision as of 02:17, 29 January 2016

The Simulation

Photons with a Bremsstrahlung energy distribution are incident upon 64 4 mm dia. thorium cylinders with 1 cm center to center spacing (see the neutron flux plot below). Photofission neutrons were simulated using the MCNPX ACE model. Upon the creation of a neutron, its initial direction of travel is logged and compared with its direction of travel when it leaves the simulation area. The target configuration pictured below is surrounded by a r=100cm cylinder (axis going into the page) of air. All cylinders have a height of 76 cm.

Prompt neutron flux from photofission

Result

15% of neutrons scattered in the thorium cylinders alone, and 17% when the air is included.


[[File:DeflectionAngle.png|400 px|thumb|center|Non-zero deflection angles of neutrons] ]


Go back Elastic scattering