Characteristic Interaction Flashcards
When does the characteristic interaction occur
when the incident electron interacts with an inner shell electron
the outer incident electron must have…
enough energy to knock an inner shell electron from its orbit (ionization)
The electron energy is slightly higher than the
binding energy
After knocking out the inner shell electron from its shell…
the incident electron will usually continue but in a different direction
How was the electron hole created?
its been created from the loss of an inner shell electron that makes the atom unstable
How do you stabilize the interaction?
by an electron from another shell that will drop down filing the hole
The energy of the characteristic xray photons emitted from the xray tube is…
equal to the difference between the binding energies of the outer and inner shell between where the electrons move
What happens when the outer shell electron has dropped to fill a hole?
Another electron will drop to fill that hole and so on (only the outer most shell is missing an electron)
Unlike Berms photons, characteristics photons are…
predictable and measurable and depend on the type of target material
