DANB Radiation Health and Safety (RHS) Practice Exam

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Where is the tungsten target inset located in a Coolidge tube?

Dollimator
Anode
Cathode
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The correct answer is: Anode

The tungsten target inset in a Coolidge tube is situated in the anode. This location is critical for the functioning of the tube because the anode is where the high-speed electrons, generated by the cathode, collide with the tungsten target to produce X-rays. The tungsten material is specifically chosen due to its high atomic number and melting point, which enable efficient X-ray production and durability under the intense heat generated during operation. Understanding this placement is essential for comprehending how X-ray machines convert electrical energy into useful radiation for diagnostic imaging in a safe and effective manner.