X-Ray Interaction with Matter Flashcards
1
Q
classic/coherent/Thompson
A
- approx 10 keV
- low energy
2
Q
compton effect
A
incident photon interacts with outer shell electron (ejection of Compton e-)
- back scatter radiation
3
Q
Compton-scatter probability is decreased with..
A
increase in x-ray energy
4
Q
photoelectric effect/absorption
A
- low E photon interacts boots another electron
- increases if atomic number (Z) of medium increases
5
Q
vital for PE interaction
A
incident photon E is equal to or greater than electron binding E of K-shell electron
6
Q
increase compton scatter
A
increase in total mass density (not increase in atomic number)
7
Q
X-ray transmission + compton scatter + PE =
A
differential absorption
8
Q
compton scatter contributes
A
no useful info to info to image
9
Q
radiographic grids are used to
A
remove comton scatter (clean)
