Study sets matching "x ray production physics"

Study sets
Classes
Users

Study sets matching "x ray production physics"

Physics X-ray Production
Projectile electrons travel from ____.
During an exposure, most of the _____…
At the target, the projectile electron…
The efficiency of x-ray production is…
Cathode to Anode
Kinetic, Hear
Outer-shell and Inner-shell electrons
Not affected by
Projectile electrons travel from ____.
Cathode to Anode
During an exposure, most of the _____…
Kinetic, Hear
69 terms
Physics X-ray production
Occurs when an incident electron inter…
An incident electron ionizes the targe…
Only characteristic X-ray useful for i…
Occurs when an incident/projectile ele…
Characteristic Radiation
Characteristic Radiation
K-characteristic
Bremsstrahlung Radiation
Occurs when an incident electron inter…
Characteristic Radiation
An incident electron ionizes the targe…
Characteristic Radiation
50 terms
Physics X-ray Production
Projectile electrons travel from ____.
During an exposure, most of the _____…
At the target, the projectile electron…
The efficiency of x-ray production is…
Cathode to Anode
Kinetic, Hear
Outer-shell and Inner-shell electrons
Not affected by
Projectile electrons travel from ____.
Cathode to Anode
During an exposure, most of the _____…
Kinetic, Hear
physics x-ray production
kinetic energy
incident (projectile) electrons
directly
independent
energy of motion
electrons that travel from the cathode to the anode making up…
heat production in the anode is ____ proportional to an incre…
efficiency of x-ray production is ____ of the tube current
kinetic energy
energy of motion
incident (projectile) electrons
electrons that travel from the cathode to the anode making up…
76 terms
Physics: X-Ray Production 4
What is the focal spot
What determines the focal spot size
What happens if the focal spot size is…
What happens if the focal spot size is…
it is the apparent source of X-rays from the tube
Focal spot size is a result of the filament shape, focusing c…
loses image sharpness ... Note that the effective focal spot is…
the anode will get too hot
What is the focal spot
it is the apparent source of X-rays from the tube
What determines the focal spot size
Focal spot size is a result of the filament shape, focusing c…
34 terms
X-ray production (physics)
X-rays
Gamma ray radiation
crest and trough
Frequency
electromagnetic waves similar to visible light; however they…
produced from spontaneous decay of radioactive element.
positive and negative phases of wave.
cycles per second.
X-rays
electromagnetic waves similar to visible light; however they…
Gamma ray radiation
produced from spontaneous decay of radioactive element.
Physics - X-Ray Production
Almost all of the kinetic energy of th…
What percentage of target interaction…
The transfer of the incident electrons…
The energy of a Bremsstrahlung photon…
Heat
1%
Infrared radiation
The difference between the entering and exiting kinetic energ…
Almost all of the kinetic energy of th…
Heat
What percentage of target interaction…
1%
78 terms
Rad Physics Chapter 7 X- Ray Production & Chpt 10 Filtration
1 - Source of electrons... 2 - Accelerati…
1%
99% or more
Bremsstrahlung x rays aka Braking xray…
What three things do you need for x-ray production?
Less than ____% of the incident electron beam creates x-rays
What % of the incident electron beam creates heat?
What types of x rays can incident electrons become?
1 - Source of electrons... 2 - Accelerati…
What three things do you need for x-ray production?
1%
Less than ____% of the incident electron beam creates x-rays
22 terms
Physics- Blackboard X-ray Production
Almost all of the kinetic energy of th…
The transfer of the incident electrons…
The energy of a bremsstrahlung photon is
Characteristic interactions may occur…
heat
infrared radiation
the difference between the entering and exiting kinetic energ…
an inner-shell electron
Almost all of the kinetic energy of th…
heat
The transfer of the incident electrons…
infrared radiation
35 terms
Radiation Physics CH7: X Ray Production
Kiloelectron Volt (keV)
Increasing Electron Beam Velocity
Tube Current
Kinetic energy is affected by
- Describes the rate of travel of an electron, or its kinetic…
- Increases the resulting XR beam energy... - Beam quality or pe…
- The electron beam, or electron cloud, travels from the cath…
- The velocity, or speed, of motion... - If velocity is increase…
Kiloelectron Volt (keV)
- Describes the rate of travel of an electron, or its kinetic…
Increasing Electron Beam Velocity
- Increases the resulting XR beam energy... - Beam quality or pe…
76 terms
study-Physics: X-Ray production
What is the focal spot
What determines the focal spot size
What happens if the focal spot size is…
What happens if the focal spot size is…
it is the apparent source of X-rays from the tube
Focal spot size is a result of the filament shape, focusing c…
loses image sharpness ... Note that the effective focal spot is…
the anode will get too hot
What is the focal spot
it is the apparent source of X-rays from the tube
What determines the focal spot size
Focal spot size is a result of the filament shape, focusing c…
Physics: X-Ray Production 4
What is the focal spot
What determines the focal spot size
What happens if the focal spot size is…
What happens if the focal spot size is…
it is the apparent source of X-rays from the tube
Focal spot size is a result of the filament shape, focusing c…
loses image sharpness ... Note that the effective focal spot is…
the anode will get too hot
What is the focal spot
it is the apparent source of X-rays from the tube
What determines the focal spot size
Focal spot size is a result of the filament shape, focusing c…
76 terms
Physics: X-Ray Production 4
What is the focal spot
What determines the focal spot size
What happens if the focal spot size is…
What happens if the focal spot size is…
it is the apparent source of X-rays from the tube
Focal spot size is a result of the filament shape, focusing c…
loses image sharpness ... Note that the effective focal spot is…
the anode will get too hot
What is the focal spot
it is the apparent source of X-rays from the tube
What determines the focal spot size
Focal spot size is a result of the filament shape, focusing c…
X-ray physics: X-ray Production
Direct effects of x-ray production
Do direct effects cause a single-stran…
T/F: Direct effect of x-ray production…
Indirect effect:
ionization of an atom that makes up a molecule of DNA
Single-stranded break
True
ionization of water molecules
Direct effects of x-ray production
ionization of an atom that makes up a molecule of DNA
Do direct effects cause a single-stran…
Single-stranded break
60 terms
Physics : X-Ray Production and Emission
How is the energy of a Bremsstrahlung…
Increasing the Z of the target materia…
As the distance between the incident e…
Increasing the potential difference be…
The difference between the entering and exiting kinetic energ…
Increase their average energy.
It decreases
Higher kVp will cause higher average energy
How is the energy of a Bremsstrahlung…
The difference between the entering and exiting kinetic energ…
Increasing the Z of the target materia…
Increase their average energy.
48 terms
rad physics chapter 7 x-ray production
what are 4 requirements to create an x…
how are x-ray photons produced
what is the primary difference between…
electrons that form the thermionic clo…
source of electrons... target... high voltage... vacuum
when the high speed elecrons from the cathose strike the anod…
x-ray are man-made while gamma ray are natural
travel at half the speed of light in about 2 cm
what are 4 requirements to create an x…
source of electrons... target... high voltage... vacuum
how are x-ray photons produced
when the high speed elecrons from the cathose strike the anod…
49 terms
Physics Ch. 7 X-ray production
What are the 3 principle parts of the…
You want a large number of e- focused on
KE=
In x-ray tube, all e- have the same
1. operating console 2. high voltage generator 3. x-ray tube
a small spot on anode w/ high K.E.
1/2 mv^2
mass
What are the 3 principle parts of the…
1. operating console 2. high voltage generator 3. x-ray tube
You want a large number of e- focused on
a small spot on anode w/ high K.E.
29 terms
Physics: X-ray Production- Bremsstrahlung
Bremsstrahlung
Slowing down or braking
80-100 kVp
Under 70 kVp
Which is the most common xray photon?
Bremsstrahlung is a German word for what?
Brem's constitutes about 80-90% of emitted xrays when tube po…
There is 100% Brem production when the kVp is set to what?
Bremsstrahlung
Which is the most common xray photon?
Slowing down or braking
Bremsstrahlung is a German word for what?
76 terms
Physics: X-Ray Production 4
What is the focal spot
What determines the focal spot size
What happens if the focal spot size is…
What happens if the focal spot size is…
it is the apparent source of X-rays from the tube
Focal spot size is a result of the filament shape, focusing c…
loses image sharpness ... Note that the effective focal spot is…
the anode will get too hot
What is the focal spot
it is the apparent source of X-rays from the tube
What determines the focal spot size
Focal spot size is a result of the filament shape, focusing c…
87 terms
Physics X-ray production & interaction
Kinetic energy _______ as kVp increases
The electrons that travel from the cat…
How many interactions can an incident…
Vibration of the outer-shell electrons…
increases
projectile or incident
1000 or more
infrared
Kinetic energy _______ as kVp increases
increases
The electrons that travel from the cat…
projectile or incident
67 terms
physics chapter 7: x-ray production
kinetic energy
what percentage of kinetic energy of p…
characteristic x-rays
what characteristic x-rays are useful…
energy of motion
99%
emitted when an outer-shell electron fills an inner-shell void
k-characteristics x-rays of tungsten
kinetic energy
energy of motion
what percentage of kinetic energy of p…
99%
34 terms
Physics Ch. 8 - X-ray Production (Bushong)
Projectile electrons
kinetic energy
orbital electrons; nuclear field
kinetic; thermal; electromagnetic; inf…
The electrons raveling from cathode to anode. These constitut…
When projectile electrons hit the heavy metal atoms of the x-…
The projectile electron interacts with either the _______ ___…
When projectile atoms interract with the anode, this results…
Projectile electrons
The electrons raveling from cathode to anode. These constitut…
kinetic energy
When projectile electrons hit the heavy metal atoms of the x-…
90 terms
Physics / X-Ray Production / Bushong Chapter 7
This chapter explains the interactions…
The energy of motion
__________ objects have no kinetic ene…
Objects in motion have ___________ ene…
Characteristic ; Bremsstrahlung
Kinetic energy
Stationary
Kinetic ; Mass ; Square
This chapter explains the interactions…
Characteristic ; Bremsstrahlung
The energy of motion
Kinetic energy
87 terms
Physics : X-Ray Production and Emission
How is the energy of a Bremsstrahlung…
Increasing the Z of the target materia…
As the distance between the incident e…
Increasing the potential difference be…
The difference between the entering and exiting kinetic energ…
Increase their average energy.
It decreases
Higher kVp will cause higher average energy
How is the energy of a Bremsstrahlung…
The difference between the entering and exiting kinetic energ…
Increasing the Z of the target materia…
Increase their average energy.
101 terms
Physics Unit 5: X-ray Production
For conditions necessary to produce x-…
Filament electrons
e- with outer shell
e- with inner shell (k)
Separation of (electrons thermionic emmission)... electron ener…
Energy from cathode to anode kVp... KE = 1/2mv^2... F = ma... Proje…
Heat... Outer shell e- to higher energy fall back down = heat e…
Target is ionized ... Characteristic X-ray production
For conditions necessary to produce x-…
Separation of (electrons thermionic emmission)... electron ener…
Filament electrons
Energy from cathode to anode kVp... KE = 1/2mv^2... F = ma... Proje…
Physics- X-Ray Production & X-Ray Emission (test #7)
As the amount of beam filtration incre…
As the amount of beam filtration decre…
As the amount of beam filtration incre…
As the amount of beam filtration decre…
Increases
Decreases
Decreases
Increases
As the amount of beam filtration incre…
Increases
As the amount of beam filtration decre…
Decreases
23 terms
Radiology Physics: Production of X-ray
What 3 things are essential in produci…
Do inner or outer electrons have more…
What is the cathode in a stationary an…
What does the anode in a stationary an…
source of electrons... means of accelerating and controling the…
inner... need more energy to stay close to nucleus
small spiral filament of tungsten wire in a focusing cup
solid rod of copper and molybdenum with a tungsten target
What 3 things are essential in produci…
source of electrons... means of accelerating and controling the…
Do inner or outer electrons have more…
inner... need more energy to stay close to nucleus
8 terms
Radiology Physics: Production of X-ray
What are the 3 functions of an x-ray g…
What does a rectification system do?
What is the timing circuit attached to?
What are the 3 circuits involved in x-…
Supply electrons ... accelerate electrons... Control exposure time
changes from AC to DC current in the high voltage circuit
secondary circuit... BUT... completely independent from primary an…
1. Primary or tube filament regulating circuit... 2. Secondary o…
What are the 3 functions of an x-ray g…
Supply electrons ... accelerate electrons... Control exposure time
What does a rectification system do?
changes from AC to DC current in the high voltage circuit
31 terms
Physics- X-ray Production ch 6-7
half the speed of light
0.5 mm
protons and neutrons
CHARACTERISTIC INTERACTIONS
Electrons travel from cathode to anode at
Electrons penetrate the target to a depth of
A nucleus made of
dislodge one of the target electrons, Outer shell electrons t…
half the speed of light
Electrons travel from cathode to anode at
0.5 mm
Electrons penetrate the target to a depth of
37 terms
Radiographic Physics. CH 6 - X-ray Production
Target Interactions
Characteristic interactions
Environment established by
Filament electron
- filament electrons penetrate the face of the target ... - to d…
- involves the filament electron and an orbital electron of a…
the removal of the orbital electron
- enters a target atom... - strikes an orbital electron... - if ene…
Target Interactions
- filament electrons penetrate the face of the target ... - to d…
Characteristic interactions
- involves the filament electron and an orbital electron of a…
11 terms
Physics: X-ray Production Characteristic
1. Electrons from filament... 2. Focusing…
Space charge
Incandescence
Focal spot
What are the four steps of xray production?
Cloud of electrons surrounding filaments
Filament is heated and glows
Area on anode where electrons hit
1. Electrons from filament... 2. Focusing…
What are the four steps of xray production?
Space charge
Cloud of electrons surrounding filaments
90 terms
Physics / X-Ray Production / Bushong Chapter 7
This chapter explains the interactions…
The energy of motion
__________ objects have no kinetic ene…
Objects in motion have ___________ ene…
Characteristic ; Bremsstrahlung
Kinetic energy
Stationary
Kinetic ; Mass ; Square
This chapter explains the interactions…
Characteristic ; Bremsstrahlung
The energy of motion
Kinetic energy
9 terms
Physics Ch. 7 - X-ray Production
2 Types of X-rays Produced in tube
Projectile electrons
Anode Heat
Effciency of X-ray Production
1. Characteristic... 2. Bremsstrahlung
Electrons traveling from cathode to anode and constitute the…
- 99% or projectile electrons kinetic energy is converted to…
- independant of mA (tube current), regardless of mA selected…
2 Types of X-rays Produced in tube
1. Characteristic... 2. Bremsstrahlung
Projectile electrons
Electrons traveling from cathode to anode and constitute the…
1 - X-ray Physics I - X-ray Production
which electron shells have lower bindi…
equation for speed of electromagnetic…
how does an X-ray tube work?
Explain Excitation, Ionization and Rad…
Outer shell. These are in less table positions relative to in…
c = f x λ
1) Thermionic transmission = Current (mA) is run through tung…
1) Excitation - heat - energetic electron hits an orbital ele…
which electron shells have lower bindi…
Outer shell. These are in less table positions relative to in…
equation for speed of electromagnetic…
c = f x λ
22 terms
Radiation Physics Chapter 7 (X-ray Production)
__________ photons are discreet
____________ photons are continuous
Electrons hit the target going what sp…
How much distance is there between fil…
Characteristic
Brehms
1/2 the SOL
1-2 cm
__________ photons are discreet
Characteristic
____________ photons are continuous
Brehms
77 terms
Chapter 10: X-Ray Production
by definition, x-rays are electromagne…
in order to generate such high energie…
in the KE formula, we see that __ is m…
in the KE formula, energy changes __ t…
tens
KE=(1/2)mv^2
velocity
proportionally
by definition, x-rays are electromagne…
tens
in order to generate such high energie…
KE=(1/2)mv^2
39 terms
Radiology Physics: X-Ray Production/Generation
Space charge limited
Saturation voltage
Emission limited
K shell binding energy of Tungsten
At low peak voltage, potental not enough to cause all electro…
All electrons are immediately pulled away from the filament,…
Above 40 kVp, the filament cure is proportional to and determ…
-69.5 keV
Space charge limited
At low peak voltage, potental not enough to cause all electro…
Saturation voltage
All electrons are immediately pulled away from the filament,…
76 terms
Lab 1- The Physics of Radiology X-Ray Production
What are X-rays?
What are other forms of Electromagneti…
What is the difference between all for…
What is electromagnetic radiation?
Electromagnetic radiation (EM)
1) X-Rays... 2) Visible Light... 3) Radio Waves... 4) Micro Waves
Their wavelengths and therefore their energies
- Alternating electric and magnetic fields that propagate thr…
What are X-rays?
Electromagnetic radiation (EM)
What are other forms of Electromagneti…
1) X-Rays... 2) Visible Light... 3) Radio Waves... 4) Micro Waves
72 terms
Physics Unit 5: X-ray Production
For conditions necessary to produce x-…
Filament electrons
e- with outer shell
e- with inner shell (k)
Separation of (electrons thermionic emmission)... electron ener…
Energy from cathode to anode kVp... KE = 1/2mv^2... F=ma... Project…
Heat... Outer shell e- to higher energy fall back down = heat e…
Target is ionized ... Characteristic X-ray production
For conditions necessary to produce x-…
Separation of (electrons thermionic emmission)... electron ener…
Filament electrons
Energy from cathode to anode kVp... KE = 1/2mv^2... F=ma... Project…
44 terms
Physics Ch. 7 X-ray production
Inside the nucleus
Outside the nucleus
1000+
Incident electrons
Gamma rays originate from
X-rays originate from
Electrons undergo _______ interactions to dissipate excess en…
Incoming electrons (projectile electrons traveling from catho…
Inside the nucleus
Gamma rays originate from
Outside the nucleus
X-rays originate from
Radiation Physics X-ray production, emission, and interactions.
What happens to filament electrons aft…
True or False, Only L shell electrons…
If filling a K shell vacancy, which sh…
True or False, Characteristic photons…
1 and 2
false
O shell
true
What happens to filament electrons aft…
1 and 2
True or False, Only L shell electrons…
false
134 terms
Radiation Physics X-ray production, emission, and interactions.
What happens to filament electrons aft…
True or False, Only L shell electrons…
If filling a K shell vacancy, which sh…
True or False, Characteristic photons…
1 and 2
false
O shell
true
What happens to filament electrons aft…
1 and 2
True or False, Only L shell electrons…
false
34 terms
Physics Ch. 8 - X-ray Production (Bushong)
Projectile electrons
kinetic energy
orbital electrons; nuclear field
kinetic; thermal; electromagnetic; inf…
The electrons raveling from cathode to anode. These constitut…
When projectile electrons hit the heavy metal atoms of the x-…
The projectile electron interacts with either the _______ ___…
When projectile atoms interract with the anode, this results…
Projectile electrons
The electrons raveling from cathode to anode. These constitut…
kinetic energy
When projectile electrons hit the heavy metal atoms of the x-…
Physics: X-ray Production, Fluoroscopy, X-ray Interactions
Almost all of the kinetic energy of th…
The transfer of the incident electrons…
The energy of a bremsstrahlung photon is
Characteristic interactions may occur…
heat
infrared radiation
the difference between the entering and exiting kinetic energ…
an inner-shell electron
Almost all of the kinetic energy of th…
heat
The transfer of the incident electrons…
infrared radiation
46 terms
Physics 101-3 X-Ray Production
Incandescent
Thermionic Emissions
Filament Current
Thermions
white, glowing, intense heat
Emission of Electrons from heated surface
low voltage current supplied to cathode causing thermionic em…
Electrically charged particles
Incandescent
white, glowing, intense heat
Thermionic Emissions
Emission of Electrons from heated surface
3 - X-ray Physics III - General Concepts of Image Production
What are the three image quality metri…
Define Contrast... What influences contr…
Hows does kVp influence contrast?
How does kVp influence dose?
1) Contrast... 2) Resolution... 3) Noise
Contrast: the degree to which light and dark areas of an imag…
High kVp decreases contrast. ... As kVp increases, penetration…
Increasing kVp decreases dose (absorption) because the photon…
What are the three image quality metri…
1) Contrast... 2) Resolution... 3) Noise
Define Contrast... What influences contr…
Contrast: the degree to which light and dark areas of an imag…
X-ray Physics Fordree Final (xray production and on)
projectile electron interacts with an…
radiation resulting from the braking o…
Give the diagnostic range for Bremsstr…
chart that measures relative number of…
Characteristic radiation
Bremsstrahlung Radiation
50-150 kVp
Emission spectrum
projectile electron interacts with an…
Characteristic radiation
radiation resulting from the braking o…
Bremsstrahlung Radiation
34 terms
Physics 2 unit 3 Ch. 7 X-Ray Production
What is ionization
What are orbital electron shells
What electron shell has the highest bi…
What formula is used to determine the…
Adding or removing an electron from or to an atom
The outer shells of an atom (K then L then M........)
K shell
2n^2
What is ionization
Adding or removing an electron from or to an atom
What are orbital electron shells
The outer shells of an atom (K then L then M........)
Radiology L1: Radiation Physics and X-Ray Production
Electromagnetic Radiation
Electromagnetic spectrum
Electromagnetic energy characteristics
Radiation
oscillating electric and magnetic fields... transmits energy thr…
frequency, wavelength, photon energy
transfer of energy through space
Electromagnetic Radiation
oscillating electric and magnetic fields... transmits energy thr…
Electromagnetic spectrum
93 terms
RT Physics Module 5: X-ray Production and Interaction
Who discovered x-rays and when?
What are the (6) basic properties ox-r…
What are the 2 classes of electron int…
Collision interactions can be either...
- Wilhelm K. Roentgen... - November 8, 1985
- Unaffected by gravity (no mass)... - Unaffected by electric fi…
- Collision interactions... - Radiative interactions
...elastic or inelastic interactions.
Who discovered x-rays and when?
- Wilhelm K. Roentgen... - November 8, 1985
What are the (6) basic properties ox-r…
- Unaffected by gravity (no mass)... - Unaffected by electric fi…
1 of 10