Question

The transition metal used in X – ray tube is:
A. Mo
B. Ta
C. Tc
D. Pm

Answer 1

Hint: X – ray tubes are used as a source of X -rays which have many applications. The use of a transition metal is done in a rotating tube anode. Rotating tube anode is a type of X – ray tube.

Complete Step-by-Step answer:
The diagrammatic representation of this X – ray tube can be represented as follows:

The most common types of anodes that are used in such an X – ray tube is a tungsten – rhenium target on a molybdenum core. This anode is backed by graphite. The rhenium used is essential for making the tungsten more ductile and it also increases the resistance of the anode from wear and tear due to the impact of the electron beams. The molybdenum that is used, is required to conduct the heat from the target. The function of the graphite is to provide thermal storage for the anode, and to minimise the rotating mass of the anode.
From the description above, we can infer that the transition metal used in X – ray tube is Molybdenum or Mo.

Hence, Option A is the correct option.

Note: An X-ray tube is a vacuum tube that converts electrical input power into X-rays. The availability of this controllable source of X-rays created the field of radiography, the imaging of partly opaque objects with penetrating radiation.