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|  DOE-HDBK-1131-98
General Employee Radiological Training
Student's Guide
C.
Introduce Objectives
1. Terminal Goal
2. Enabling Objectives
II.
LESSON
A. Non-ionizing and Ionizing Radiation (EO1)
Radiation is energy emitted through space and matter. This energy release is
in the form of rays or particles and is emitted from unstable atoms or various
radiation-producing devices, such as televisions and X -ray machines.
1. Atoms
The elements that make up all matter are composed of atoms. Atoms
have three basic particles: protons, neutrons and electrons.
a. Stable atoms
Most atoms are stable and do not emit excess energy
b. Unstable atoms
Unstable atoms emit excess energy. This energy is called radiation.
2. Ionizing radiation
Ionizing radiation has enough energy to remove electrons from electrically
neutral atoms.
4
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