Radiation
Page
5

Genetic Effects: Genetic effects to off-spring of exposed persons are irreversible and nearly always harmful. Doubling dose for mutation rate is approximately 50-80 rems. (Spontaneous mutation rate is approx. 10-100 mutations per million population per generation.)

Slide 47

Critical Organs: Organs generally most susceptible to radiation damage include: Lymphocytes, bone marrow, gastro-intestinal, gonads, and other fast-growing cells. The central nervous system is relatively resistant. Many nuclides concentrate in certain organs rather than being uniformly distributed over the body, and the organs may be particularly sensitive to radiation damage, e.g., isotopes of iodine concentrate in the thyroid gland. These organs are considered "critical" for the specific nuclide.

Slide 48

Non-ionizing Radiation

Definition:

“ They are electromagnetic waves incapable of producing ions while passing through matter, due to their lower energy.”

Slide 49

All earth surface system components emit radiation---the sun and the earth are the components we are most interested in

The sun emits radiation composed of high energy infrared radiation, visible light, and ultraviolet radiation collectively known as shortwave radiation (SW)

The earth emits radiation composed of lower energy infrared radiation collectively known as long-wave radiation (LW)

Slide 50