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Figure 4 shows the cross-section of a diffusion cloud chamber used to detect radiation from radioctive sources.

      

Figure 4 shows the cross-section of a diffusion cloud chamber used to detect radiation from radioctive sources.
physics6620171142.jpg
(i) State one function of each of the following:
Alcohol
Solid CO2
(ii) When radiation from the source enters the chamber, some white traces are observed. Explain how these traces are formed and state how the radiation is identified.
(iii) A leaf electroscope can also be used as a detector of radiation. State two advantages of the diffusion cloud chamber over the leaf electroscope as a detector.

  

Answers


John
(i) Alcohol: To produce alcohol vapour

Solid CO2: To cool alcohol vapour

(ii) The radiation from source ionizes air along its path. Alcohol condenses around these ions forming droplets or traces. The nature of these traces identifies the radiation.

(iii) -The diffusion cloud chamber is more sensitive than the leaf electroscope.

- The diffusion cloud chamber can identify the nature of radiations, unlike the electroscope.
johnmulu answered the question on June 6, 2017 at 08:49


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