Which instrument is used for personal dosimetry according to the source material?

Which instrument is used for personal dosimetry according to the source material?

• A. Geiger-Mueller detector
• B. Film badge
• C. Thermoluminescent dosimeter
• D. Pocket ionization chamber

Answer: (D)

Personal dosimetry is about measuring the dose received by an individual during work. The pocket ionization chamber fits this purpose because it is a small, self-contained device you can carry with you, and it gives an immediate readout of radiation exposure by measuring the ionization in a small air chamber. This direct, on-the-spot indication makes it a practical personal dosimeter for monitoring how much dose the wearer has received during a procedure. The other instruments serve related roles but not the same immediate, wearer-centered reading. A Geiger–Mueller detector helps detect whether radiation is present and at what rate in an area, not the accumulated dose for a person. A film badge records exposure on film but requires processing to read the result, so it isn’t read in real time. A thermoluminescent dosimeter stores energy in crystals and requires a special reader to extract the dose later. Thus, for immediate personal monitoring as described in the source material, the pocket ionization chamber is the best fit.

Personal dosimetry is about measuring the dose received by an individual during work. The pocket ionization chamber fits this purpose because it is a small, self-contained device you can carry with you, and it gives an immediate readout of radiation exposure by measuring the ionization in a small air chamber. This direct, on-the-spot indication makes it a practical personal dosimeter for monitoring how much dose the wearer has received during a procedure.

The other instruments serve related roles but not the same immediate, wearer-centered reading. A Geiger–Mueller detector helps detect whether radiation is present and at what rate in an area, not the accumulated dose for a person. A film badge records exposure on film but requires processing to read the result, so it isn’t read in real time. A thermoluminescent dosimeter stores energy in crystals and requires a special reader to extract the dose later. Thus, for immediate personal monitoring as described in the source material, the pocket ionization chamber is the best fit.