NRE 3301 Homework #5
Due date: 11/30/06
1. (a) Use the following Compton-scattering formula of d/d (a simplified form of the
Klein-Nishina formula) to calculate the mass attenuation coefficient (, cm-1) for
1-MeV photon interacting with aluminum (A=27 and
T!l"u,lL JL*. L
/)'(:; to -1;.
( l.,:i' $"'1.tv ~LO-.,) t
ll.~1~ -Vl) ;.
\~-h> Jl ,.,.,tQs]
NRE 3301 Radiation Physics Class Work 4
Dr. C. Deo
Title: Binary Nuclear Reactions
Team members present:
1. An important radionuclide produced in water-cooled nuclear reactors is 16N
which has a half-life of 7.13 s a
Midterm Exam 3
NRE 3301 Radiation Physics
Date 04-02-2015, Time 1.40pm to 2.50pm
Allowed items are a calculator, a single sheet of paper and the appendices provided with the
Please ensure all exam sheets are together. Lost pap
NRE 3301 FINAL
NRE 3301 FINAL EXAM
December 10, 2009 2.55pm to 5.20pm.
Honor Code: I have neither given nor received aid on this exam.
o Write your name on all sheets
o There are 8 questions in all.
o Closed book exam wi
3 Detectors and Measurements
3.1 Definitions and Relations
3.1.1 Counting Statistics
The Binomial Distribution
The most general statistical distribution is the Binomial distribution. The other distributions can be derived from this one. If n is the number
5 Radiation Biology
5.1 Definitions and Relations
The material below is mainly related to cell survival and clinical therapeutic
applications are not included. The cell survival models are introduced without any
discussion of the biology behind them.
1 Radiation Sources and Radioactive Decay
1.1 Definitions and Equations
1.1.1 Radioactivity and Decay Equations
Activity is defined as
= N Unit : 1 Bq (becquerel) = 1 s1
where A is activity, dN/dt is the number of spontaneous nuc
2 Interaction of Ionizing Radiation with Matter
2.1 Definitions and Relations
The definitions in the text below refer mainly to ICRU Report 85: Fundamentals Quantities and Units for Radiation (ICRU, 2011).
2.1.1 Radiometric Quantities
Radiation can be div
4 Radiation Dosimetry
4.1 Definitions and Relations
4.1.1 Definitions of Important Dosimetric Quantities
When ionizing radiation interacts with matter it deposits energy. Uncharged radiation like photons and neutrons perform this mainly in two steps where
Elastic scattering, Q=0, kinetic energy is conserved
Inelastic scattering, Q<0, kinetic energy is not conserved but overall energy is conserved
Compound nucleus (noted with a *): excited compound nucleus, only exists for a short period of
Compton scattering problems
Derive formulas to easily compute the relationship between a photon energy and wavelength.
A photon of 1 MeV collides with a free but stationary electron and the scattering angle is
a) The en
Consider an incident particle of mass M and kinetic energy EkJ-nc undergoing a head-on
collision with an atomic electron (mass m, assume it is free and at rest). Study the variation
with Ek,inc of the maximum energy transfer (Qmax) between the t
- @ 1:
(f G<J 4 : T .1"LJ- -I r~,\. l.
-! ITl. t-)T~#~
f ' -Z ~J' -:(0.1 )to,;,)
(,t>'i1)1 x '0
A' l'd/S \1P
NRE 3301 Radiation Physics Class Work #3
Team members present:
Reading: Chapter 4 of Turner Atoms, Radiation and Radiation Protection.
1. Write down the equations for the decay of X1->X2->X3, the qu
Due date: 9-7-2006
1. As described, two point sources (S1 and S2) of radiation are located at 2 meters and 5 meters
respectively from a point detector P.
If S1= 107 particles sec-1 and S2= 108 particles sec-1, calculate
NE 3301 Homework #2
Due date: 9/26/06
1. Consider the nuclei 13N and 13C. The difference in mass between them is measured
to be 1.71 MeV/c2. Which terms in the mass formula (Eq. 3.16 of the text) are
responsible for this difference? Please justify your an
NRE 3301 Homework #4
Due date: 11/2/06
1. Resonances are observed in the neutron total cross section for 0 n + 10B 11B at
the following (laboratory) energies: 0.53 MeV, 1.9 MeV, 2.8 MeV, 3.4 MeV, and 4.2
MeV. If the Q-value of the above reaction is 8.45