Characteristics of Several Types of Ionizing Radiation
APPROXIMATE RANGE |
||||
---|---|---|---|---|
Type of Radiation |
Approximate Energy |
In Air |
In Soft Tissue |
Origin |
PARTICULATE
|
||||
Alpha particles |
4-7 MeV |
1-10 cm |
Up to 0.1 mm |
Heavy radioactive nuclei |
Beta particles |
0-7 MeV |
0-10 m |
0-2 cm |
Radioactive nuclei |
ELECTROMAGNETIC
|
||||
X-rays |
0-25 MeV |
0-100 m |
0-30 cm |
Electron cloud |
Gamma rays |
0-5 MeV |
0-100 m |
0-30 cm |
Radioactive nuclei |
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