A reaction rate is the number of reactions per time unit in a medium irradiated by a neutron flux ø(E). If the number of atoms at the time t is N(t) and the reaction cross section is o(E), write the expression, with detailed explanation, of the the reaction rate as - N Write also the solution of the differential equation and explain the nuclide evolution under a neutron flux.

College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
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Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
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Q1-
A reaction rate is the number of reactions per time unit in a medium irradiated by a neutron flux 6(E). If
the number of atoms at the time t is N(t) and the reaction cross section is o(E), write the expression, with
detailed explanation, of the the reaction rate as - N. Write also the solution of the differential equation and
explain the nuclide evolution under a neutron flux.
· ip
Q2-
What is the energy of a 1 keV neutron after an elastic scattering on a sodium nucleus (A=23) with a /2
deviation angle in the center of mass?
Q3-
Give the differential equation for radioactive decay of an isotope X with a number of isotope given by
Nx(t) and a half-life of T1/2. Solve this equation and draw the evolution plot for this isotope.
Transcribed Image Text:Q1- A reaction rate is the number of reactions per time unit in a medium irradiated by a neutron flux 6(E). If the number of atoms at the time t is N(t) and the reaction cross section is o(E), write the expression, with detailed explanation, of the the reaction rate as - N. Write also the solution of the differential equation and explain the nuclide evolution under a neutron flux. · ip Q2- What is the energy of a 1 keV neutron after an elastic scattering on a sodium nucleus (A=23) with a /2 deviation angle in the center of mass? Q3- Give the differential equation for radioactive decay of an isotope X with a number of isotope given by Nx(t) and a half-life of T1/2. Solve this equation and draw the evolution plot for this isotope.
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