X-Ray Production Flashcards
X rays are produced when electrons are
accelerated from the cathode to the anode
tube voltage (mA)
potential difference between the cathode and the anode
filament current
the current applied to the filament
no. of xrays produced
∝mA ∝(kV)^2
electron volt eV
KE gained by one electron when accelerated through a potential of 1 volt is 1 eV
intensity
energy flowing through unit area in unit time j/m^2/s
inverse square law
the intensity of the radiation from a source varies inversely as the square of the distance from the source
small focal spot
good image quality
large focal spot
spreads the heat energy out
anode face angle is between
15-20 degrees
area of the real focus
3x that of the apparent focus
K alpha X-Ray
electron comes from LIII or LII subshell
K beta X-Ray
vacancy is filled from electron from M shell