Chapter 2- Radiation Physics

Question 0

Alpha particles

Answer 0

A type of particulate radiation emitted from the nuclei and heavy metals; alpha particles contain 2 protons and 2 neutrons and are positively charged

Question 1

Absorption

Answer 1

The total transfer of energy from the x-ray photon to the atoms of matter through which the x-ray beam passes. Adsorption depends on the energy of the x-ray beam and the composition of the absorbing matter or tissues.

Question 2

Aluminum discs

Answer 2

Discs or sheets of aluminum usually 0.5 mm thick. That are placed in the path of the x-ray beam filter out the nonpenetrating longer wavelength x-rays

Question 3

Amperage

Answer 3

The number of electrons have passed through a conductor the strength of an electrical current

Question 4

Ampere (A)

Answer 4

The unit of measure used to describe the number of electrons passing through a conductor; The intensity of an electric current produce by one volt acting through a resistance of 1 ohm

Question 5

Anode

Answer 5

The + electrode in the X-ray tube; consists of a wafer thin tungsten plate embedded in a solid copper rod; converts electrons into electrons

Question 6

Atom

Answer 6

A tiny invisible particle that is the fundamental unit of matter the smallest part of an element has properties of that element

Question 7

Ionization

Answer 7

Is the production of ions or the process of converting an atom into ions

Question 8

Ion pair

Answer 8

Occurs when an electron is removed from an atom During ionization