Which statement correctly identifies the three types of personal radiation monitors listed?

Which statement correctly identifies the three types of personal radiation monitors listed?

• A. OSL dosimeter; Thermoluminescent dosimeter; Personal Digital Ionization Chamber
• B. OSL dosimeter only
• C. Thermoluminescent dosimeter and G-M counter
• D. All three: OSL dosimeter; Thermoluminescent dosimeter; Personal Digital Ionization Chamber

Answer: (D)

The point being tested is recognizing the different kinds of personal radiation monitors that can be used for occupational dose assessment. Among the listed options, three types appear: OSL dosimeter, thermoluminescent dosimeter (TLD), and a Personal Digital Ionization Chamber. OSL dosimeters use optically stimulated luminescence to read dose after exposure; they are a passive, reusable option. TLDs store energy in crystal lattices and emit light when heated, with the emitted light proportional to the dose, and they are also reusable after readout. A Personal Digital Ionization Chamber provides a real-time or quickly read digital indication of dose (and sometimes dose rate), giving immediate monitoring. Since all three are recognized as personal radiation monitors, the correct choice includes all of them. The other options either omit one of these types or include instruments like a Geiger-Müller counter, which is typically a survey instrument, not a personal dosimeter.

The point being tested is recognizing the different kinds of personal radiation monitors that can be used for occupational dose assessment. Among the listed options, three types appear: OSL dosimeter, thermoluminescent dosimeter (TLD), and a Personal Digital Ionization Chamber. OSL dosimeters use optically stimulated luminescence to read dose after exposure; they are a passive, reusable option. TLDs store energy in crystal lattices and emit light when heated, with the emitted light proportional to the dose, and they are also reusable after readout. A Personal Digital Ionization Chamber provides a real-time or quickly read digital indication of dose (and sometimes dose rate), giving immediate monitoring. Since all three are recognized as personal radiation monitors, the correct choice includes all of them. The other options either omit one of these types or include instruments like a Geiger-Müller counter, which is typically a survey instrument, not a personal dosimeter.