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10 Nov 2019
A monoenergetic beam of neutrons, cp = 4 X 1 0 10 neutrons/cm2-sec,impinges on a
target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024atoms per cm3 in the
target, and the total cross-section at the energy of the beam is4.5 b.
(a) What is the macroscopic total cross-section?
(b) How many neutron interactions per second occur in thetarget?
(c) What is the collision density?
A monoenergetic beam of neutrons, cp = 4 X 1 0 10 neutrons/cm2-sec,impinges on a
target 1 cm2 in area and 0. 1 cm thick. There are 0.048 x 1 024atoms per cm3 in the
target, and the total cross-section at the energy of the beam is4.5 b.
(a) What is the macroscopic total cross-section?
(b) How many neutron interactions per second occur in thetarget?
(c) What is the collision density?
Nestor RutherfordLv2
20 Oct 2019
