RTBC A+ PHYSICS CH 6 AND 7 EXAM: LATEST VERSION
ENGAGING QUESTIONS AND ANSWERS (100% ACCURATE)
What three of the following is required for x-ray production?
-Source of electrons (thermionic emission)
-Rapidly accelerating electrons
-Rapidly decelerating electrons (anode)
What component of the x-ray tube is the source of free electrons?
Cathode filament
What technical factor is responsible for accelerating electrons through the tube?
kVp
Thermionic emission is the process within the x-ray tube directly responsible for
creating?
free electrons
Which part of the tube becomes negatively charged during an x-ray exposure?
cathode filament
What is responsible for controlling the energy of the x-ray beam?
kVp
What condition is required to induce thermionic emission within the cathode
filament?
High current
How can a technologist decrease the intensity of the x-ray beam while
maintaining the same beam energy?
Decrease mA
During an attempted x-ray exposure, the tube fails to create any photons. What
condition most likely explains this failure?
Breakage of the cathode filament
Brems radiation is created within the x-ray tube when high energy electrons
interact with?
Electric field of nucleus
Bremsstrahlung is a German word defined as?
, Braking radiation
That max energy of a brems photon that can be created during an x-ray exposure
is equal to?
Energy of incident electron
The max energy of brems photons is controlled by what technical factor?
Tube potential
The energy of brems x-ray photon is equal to?
Difference between incoming and outgoing electron energy
What is the innermost electron shell in an atom?
K shell
Electron binding energy is defined as?
Energy required to remove an electron from orbit
A characteristic photon energy depends on what two things?
-Energy of incident electron
-Binding energy of orbital electrons
What are most of the x-ray photons in an x-ray beam?
Brems radiation
The most useful characteristics photons are produced when the incident electron
interacts with?
Inner shell electrons
What portion of the graph represents K characteristic photons?
The straight line (if it does not interact the K shell then it does not show up on the graph)
T/F On the photon energy spectrum graph, the characteristic line cannot be any
other energy besides 69.5
True
X-ray beam quantity refers to?
Number of photons in the x-ray beam
What is another name for x-ray beam quantity?
Intensity
What two measurements are used to describe quantity of radiation in the beam?
Air Kerma and exposure
ENGAGING QUESTIONS AND ANSWERS (100% ACCURATE)
What three of the following is required for x-ray production?
-Source of electrons (thermionic emission)
-Rapidly accelerating electrons
-Rapidly decelerating electrons (anode)
What component of the x-ray tube is the source of free electrons?
Cathode filament
What technical factor is responsible for accelerating electrons through the tube?
kVp
Thermionic emission is the process within the x-ray tube directly responsible for
creating?
free electrons
Which part of the tube becomes negatively charged during an x-ray exposure?
cathode filament
What is responsible for controlling the energy of the x-ray beam?
kVp
What condition is required to induce thermionic emission within the cathode
filament?
High current
How can a technologist decrease the intensity of the x-ray beam while
maintaining the same beam energy?
Decrease mA
During an attempted x-ray exposure, the tube fails to create any photons. What
condition most likely explains this failure?
Breakage of the cathode filament
Brems radiation is created within the x-ray tube when high energy electrons
interact with?
Electric field of nucleus
Bremsstrahlung is a German word defined as?
, Braking radiation
That max energy of a brems photon that can be created during an x-ray exposure
is equal to?
Energy of incident electron
The max energy of brems photons is controlled by what technical factor?
Tube potential
The energy of brems x-ray photon is equal to?
Difference between incoming and outgoing electron energy
What is the innermost electron shell in an atom?
K shell
Electron binding energy is defined as?
Energy required to remove an electron from orbit
A characteristic photon energy depends on what two things?
-Energy of incident electron
-Binding energy of orbital electrons
What are most of the x-ray photons in an x-ray beam?
Brems radiation
The most useful characteristics photons are produced when the incident electron
interacts with?
Inner shell electrons
What portion of the graph represents K characteristic photons?
The straight line (if it does not interact the K shell then it does not show up on the graph)
T/F On the photon energy spectrum graph, the characteristic line cannot be any
other energy besides 69.5
True
X-ray beam quantity refers to?
Number of photons in the x-ray beam
What is another name for x-ray beam quantity?
Intensity
What two measurements are used to describe quantity of radiation in the beam?
Air Kerma and exposure
