Abstract
The distribution in angle and energy of neutrons emerging from an iron slab bombarded by the collimated 49° neutron beam of the Princeton-Pennsylvania Accelerator (PPA) has been measured and compared with an approximate 2-dimensional semi-analytic solution to the neutron transport equation. Measurements were made using a proton spark chamber and a polyethylene radiator at 0°, 15°, 30° and 45° from the direction of the incident PPA neutron beam. The comparison extended from 4 to about 200 MeV. Agreement was reasonably good and it is suggested that this kind of solution to the transport equation would be useful for the calculation of neutron fluxes from anisotropic point sources such as a shielded synchrotron target.
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