Which is sensitive to extremes in environment?

Which is sensitive to extremes in environment?

• A. TLD
• B. Film badge
• C. Pocket ionization chamber
• D. Handheld ionization chamber

Answer: (A)

Thermoluminescent dosimeters are highly sensitive to environmental conditions because the signal they store relies on trapped energy in a crystal lattice. The amount of light released when the crystal is later heated depends on how many traps were filled by radiation, but those traps can be affected by storage and environmental factors. High temperatures can cause partial fading or rearrangement of traps, and moisture or humidity can alter the crystal’s properties or cause changes in the trapped charge. This makes the recorded dose vulnerable to extremes in temperature and humidity, so TLDs require strict environmental control during storage and before reading. Film badges also react to environmental factors like light and processing conditions, but their sensitivity to environmental extremes isn’t as pronounced as that of TLDs in terms of the stored signal. Pocket ionization and handheld ionization chambers provide direct readings and are less affected by pre-readout environmental conditions, though they have their own operating ranges.

Thermoluminescent dosimeters are highly sensitive to environmental conditions because the signal they store relies on trapped energy in a crystal lattice. The amount of light released when the crystal is later heated depends on how many traps were filled by radiation, but those traps can be affected by storage and environmental factors. High temperatures can cause partial fading or rearrangement of traps, and moisture or humidity can alter the crystal’s properties or cause changes in the trapped charge. This makes the recorded dose vulnerable to extremes in temperature and humidity, so TLDs require strict environmental control during storage and before reading.

Film badges also react to environmental factors like light and processing conditions, but their sensitivity to environmental extremes isn’t as pronounced as that of TLDs in terms of the stored signal. Pocket ionization and handheld ionization chambers provide direct readings and are less affected by pre-readout environmental conditions, though they have their own operating ranges.