Radiation technology #05

X ray Tube :- An X-ray tube is a vacuum tube that converts electrical  energy input  into x rays photons. 

X ray tube

 X-ray tubes are also used in CT scaners ,airport luggage scanners, material and structure analysis, in  industries.
There are two type x ray tubes are used:-
1. Conventional or old type tubes
2. Modern x ray tubes
1. Conventional type - there are two tubes which are used in the early.
(a) crooks tube
 (b) Coolidge tube

(A) crooks tube -

X ray tube or crooks tube

Firstly the tube used by wilhelm conard Roentgen ( in 8 November 1895) for x ray production is a crooks tube .
→these are also called cold cathode tube.
→These tube has very low vacuum 0.1 Pa because there are electron produce by ionisation of moliqule of gas present in tube.
These first generation Crookes X-ray tubes were used until the 1920s.

(B) coolidge tube-
These tubes are replaced by William Coolidge in 1913.
Coolidge tubes are basic of modern tubes.

Because these tube high capacity of x ray production comparison to crooks tube.
→These tube has very high vacuum 0.0001 Pa.
→There are electron produced by filament used in tube at cathode side.
→These tube are also called hot cathode tube.

After these tubes modern tubes are invented.

Modern tubes are discussed in the next..... 

Kushagra Sharma