3. Pocket chambers work on the principle of electrostatic discharge, similar to a gold-leaf electroscope. 4. The dosimeter consists of a small air-filled One side is fixed and the chamber in which a split quartz fiber is side is free to suspended. move. 5. The movable is displaced electrostatically by charging it. a. As both fibers are connected, they have the same charge and repel. b. Exposure to ionizing radiation will This movement is read neutralize some of the charge, allowing the on the scale. movable fiber to move towards its normal position. 6. Characteristics of Pocket Chambers a. Measure only X-rays or gammas. b. They are very sensitive to shock and will often go offscale if dropped. c. They are affected by humidity and geotropism d. They are subject to drift, a gradual loss of charge without the presence of radiation.
3. Pocket chambers work on the principle of electrostatic discharge, similar to a gold-leaf electroscope. 4. The dosimeter consists of a small air-filled chamber in which a split quartz fiber is suspended. One side is fixed and the side is free to move. 5. The movable is displaced electrostatically by charging it. a. As both fibers are connected, they have the same charge and repel. b. Exposure to ionizing radiation will neutralize some of the charge, allowing the movable fiber to move towards its normal position. This movement is read on the scale. 6. Characteristics of Pocket Chambers a. Measure only X-rays or gammas. b. They are very sensitive to shock and will often go offscale if dropped. c. They are affected by humidity and geotropism d. They are subject to drift, a gradual loss of charge without the presence of radiation.
RadiationDetectionPrinciples.docx