If the exposure time is cut in half, the dose will be reduced by the same fraction. Distance - Distance is one of the most effective means to reduce dose thanks to basic principles of geometry. When the working distance from a point radiation source is increased by a factor of two, the dose received from that source will be reduced by a factor of four. This is referred to as the inverse square law, i.e., the radiation intensity from a point source decreases with the square of the distance from the source. Shielding - Shielding is any material used to reduce the intensity of radiation by absorbing or attenuating the radiation coming from the source.
Nuclear gauges have a significant amount of shielding already built in to protect the operator.
Further Information Further information about radiation and radiation safety can be found at a number of sites on the world wide web. Troxler Recommended Links Troxler also offers two training classes on radiation safety for gauge operations and radiation safety officers. All rights reserved.