Table 1-4 Gamma Rays/X-Rays

DOE-HDBK-1130-98

Module 1: Radiological Fundamentals

Instructor's Notes

2) The range in air is very far. It will easily go several hundred

feet.

c. Shielding

Gamma/X-ray radiation is best shielded by very dense materials,

such as lead. Water or concrete, although not as effective as the

same thickness as lead, are also commonly used, especially if the

thickness of shielding is not limiting.

d. Biological hazards

Gamma/X-ray radiation can result in radiation exposure to the

whole body.

e. Sources

(Insert facility-specific information.)

Table 1 -4

Gamma Rays/X-Rays

Physical

Characteristics

No mass.

No charge.

Electromagnetic wave or photon.

Similar (difference is the place of origin).

Range in air is very far.

Range

It will easily go several hundred feet.

Very high penetrating power since it has no

mass and no charge.

Concrete.

Shielding

Water.

Lead.

Whole body exposure.

Biological

The hazard may be external and/or internal.

Hazard

This depends on whether the source is inside

or outside the body.

Insert facility-specific information.

Sources