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Table 1-4 Gamma Rays/X-Rays - hdbk-1130-98_ch10061


DOE-HDBK-1130-98
Module 1: Radiological Fundamentals
Instructor's Notes
Table 1-3
Beta Particles
Physical
Small mass.
Characteristics
-1 charge or + 1 charge.
Short distance (one inch to 20 feet).
Range
Plastic.
Shielding
Glass.
Safety glasses.
Internal hazard (this is due to short range).
Externally, may be hazardous to skin and eyes.
Hazard
Insert facility-specific information.
Sources
3. Gamma rays/X rays
a. Physical characteristics
1) Gamma/X-ray radiation is an electromagnetic wave
(electromagnetic radiation) or photon and has no mass and no
electrical charge.
2) Gamma rays are very similar to X rays. The difference
between gamma rays and X rays is that gamma rays originate
inside the nucleus and X rays originate in the electron orbits
outside the nucleus.
3) Gamma/X-ray radiation can ionize as a result of direct
interactions with orbital electrons.
EO6 Identify the four basic
types of ionizing radiation
and the following for each
type:
a. Physical characteristics
b. Range
c. Shielding
d. Biological hazards
e. Sources
b. Range
1) Because gamma/X-ray radiation has no charge and no mass, it
has very high penetrating ability.
12


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