Principles Of Radiation Physics Flashcards
1 inch is how many centimeters?
2.54 centimeters
If a neutral atom has an atomic number of 10, how many electrons will it have?
10
(For an atom to be neutral, it had to have the same number of protons and electrons)
What type of radiation is produced when a high speed electron is slowed down or stopped?
Bremsstrahlung
(Brems=brakes)
What describes a proton ?
Mass and positive charge
What are by products if photoelectric absorption?
- Photoelectron
- Characteristic radiation
- Ionized atom
What is the unit of force?
Newton
In the normal diagnostic range, what is the wavelength range of the x-rays?
0.1 - 0.5 angstroms
How many electrons occupy the M she’ll of an atom?
18
F= 2(n squared)
Ex: KLMNOP 2(3^2) = 18 M=18
The mass number of an atom is equal to what?
The number of protons plus the number of neutrons 
Radiation that changes direction as it passes through a material is called what?
Scatter
What is the push or pull on an object called?
Force
Which of the following describes an atom that has lost one or more of its electrons?
Ion
How many pounds are in a kilogram?
2.2
Which of the following would be found in the nucleus of an atom?
Proton and Neutron
Ionization can result from which of the following interactions of radiation with tissue?
Photoelectric absorption
What are charged atoms called?
Ions
The ability of a moving body to do work is called what?
Kinetic energy
What is the formula for converting Fahrenheit to Celsius?
5/9 (F-32)
Which of the following types of primary radiation cannot be produced at two potential is less than 70 keV
Characteristic
What describes the radiation that makes up the x-ray beam after it has traversed the patient?
Remnant exit radiation
What describes an electron?
Mass and negative charge
What is the definition of power?
The rate at which work is done
The atomic number of an atom is equal to which of the following
Number of protons
Which of the following x-ray interactions occurs most often with extra energy is over 100 keV
Compton effect
What type of primary radiation is produced when the x-ray tube voltage is below 70 lvl
Bremsstrahlung
How many angstroms are in a meter?
10,000,000,000
The probability a photo electric absorption occurring, increases with an increase in what?
Atomic number of material
What is not a property of x-rays?
Constant energy
