Chapter 25.4, Problem 29LC

Interpretation Introduction

Interpretation: To explain why film badges are used instead of Geiger counters to monitor radiation exposure.

Concept Introduction: Some devices are used to detect radiation. The radiations that are emitted by the radioisotopes are called ionizing radiations.

Answer to Problem 29LC

Film badges are preferred over the Geiger counter to monitor exposure to radiation because it is sensitive to exposure to radiation. Film badges are not used in protecting a person from radiation but they monitor the degree of exposure.

Explanation of Solution

The radiations that are emitted by radioisotopes have large energy that they can even knock off electrons from atoms, producing ions. Thus, the radiations that are emitted by the radioisotopes are called ionizing radiations.

These radiations cannot be detected easily with the eyes, ears, or nose. Thus, to detect these radiations some devices are used that are as follows:

• Geiger counter
• Scintillation counters
• Film badges

Film badges are preferred over the Geiger counter to monitor exposure to radiation because it is sensitive to exposure to radiation. Film badges are not used in protecting a person from radiation but they monitor the degree of exposure.

They are not expensive and also help in making a permanent record.

Conclusion

Thus, film badges are preferred over Geiger counter to monitor radiation exposure.