Flashcards
X Ray
Cards in this deck (10)
- 1X Ray'sKey Words
-Electrons
-Cathode
-Anode
-Overheating
-Vacuum
Decelerated - 2Structure of X Ray Tube (Coolidge Tube)Cathode: Heated to cause a release of electrons (THERMIONIC EMISSION)
Anode: Made of tungsten (Constantly rotated to prevent overheating)
All enclosed in a VACUUM - 3The Process1) Cathode: Heated to cause a release of electrons (THERMIONIC EMISSION)
2) Electrons are accelerated towards anode by a high voltage
3) When Electron hits anode, it is decelerated so it loses energy.
4) This lost energy is emitted as an X RAY - 4Why Do the Electrons Lose Energy? (In Detail)Intro:
=Anode made of tungsten
=Cathode releases electrons
=Tungsten has 74 electrons arranged in cells
=YOU HAVE A COLLISION - 5Step 1Cathode releases electrons because it is heated and these electrons accelerate towards the ANODE because of high voltage
- 6Step 2The released electrons from Cathode then HIT electrons of inner orbit of Tungsten
- 7Step 3There is now a gap in the inner electron shell of Tungsten
- 8Step 4So this gap must BE FILLED so an electron from the outer shell drops down INTO the INNER SHELL
- 9Step 5This causes a loss of energy, this loss of energy is the emitting of an X Ray
- 10Jazz PointsWilhelm Conrad Roentgen discovered in 1895
He used the mathematical symbol x to represent something unknown
Oudin and Barthelemy right afterwards discovered X ray bones of hand
X rays also used for CRYSTALLOGRAPHY which is info about structure of biologically important molecules.
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- Description
- University Graduate Biophysics Flashcards on X Ray , created by Soumya Bhadra on 26/01/2016.
- Created by
- Soumya Bhadra
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