64071
Description
Quiz by bethany.adkins22, updated more than 1 year ago
|
Created by bethany.adkins22
about 11 years ago
|
|
Question 1
Question
Coherent scatter will only occur...
Answer
-
at high energies
-
When the photon has energy greater than the electron binding energy
-
At low photon energies
-
After a previous interaction
Question 2
Question
The probability of compton scatter occurring is...
Answer
-
Is proportional to energy
-
Is proportional to density squared
-
Is proportional to electron density
-
Is inversely proportional to energy
Question 3
Question
What happens to the positron produced after pair production?
Answer
-
It travels through matter and excites and ionises atoms
-
It is absorbed by an x-ray photon
-
It will interact with the nucleus of an atom
-
It combines with an electron- annihilation
Question 4
Question
In a low energy compton scatter interaction, where is most of the energy deposited?
Answer
-
The initial photon
-
The ejected electron
Question 5
Question
Electrons produced in all interactions...
Answer
-
Will have the same energy as the initial photon
-
Will produce a photoelectron
-
Will carry some energy from the initial photon
-
Transferred to the medium by ionisation or excitations
-
Can result in x-ray production
Question 6
Question
How much energy must a photon have to undergo photoelectric interactions?
Answer
-
1.022meV
-
More than the binding energy of a bound electron
-
More than the binding energy of the k shell
-
0.511meV
Question 7
Question
The probability of pair production is...
Answer
-
Is proportional to energy squared
-
Is inversely proportional to z
-
Is proportional to energy
-
Is proportional to z
Question 8
Question
What is the Linear Attenuation Coefficient (LAC)?
Answer
-
Fraction of photons interacting per gram of material
-
Fraction of photons interacting per unit thickness of attenuator
-
Fraction of electrons interacting relative to Z of material
Question 9
Question
To undergo a pair production interaction, how much energy must the initial photon have?
Answer
-
0.511meV
-
Enough to overcome the binding energy of the electron
-
1.022meV
-
1.022kV
Question 10
Question
What is produced in the photoelectric effect?
Answer
-
An electron and a positron
-
The photon is diffracted
-
Nothing
-
An electron is ejected and a new photon produced.
Question 11
Question
The probability of photoelectric absorption....
Answer
-
Is proportional to z sqaured.
-
Is proportional to z cubed.
-
Is inversely proportional to energy cubed.
-
Is proportional to energy cubed.
Want to create your own Quizzes for free with GoConqr? Learn more.