Safety Flashcards
4 requirements necessary for xray production
- source of free electrons
- acceleration of electrons
- focusing of electrons
- deceleration of electrons
define thermionic emission
heating of the filament to the point that electrons boil off its surface (free electrons)
what is the focusing cup typically made of
molybdenum
what are the electrons doing when they slam into the anode
the electrons are decelerating
what is produced at the end of x-ray production (specific)
99% heat, 1% xray.
brem photons and characteristic photons are produced
smallest subdivision of an element that maintains all physical and chemical properties of the element
atom
how to find atomic number
number of protons in the nucleus
how to find atomic mass
sum of protons and neutrons in the nucleus
electrons are held in their orbital shells by what
electron binding energy
if the electron is closer to the nucleus its electron binding energy is what
EBE is stronger
if the electron is farther from the nucleus its electron bind energy is
EBE is weaker
the electron binding energy of an atom with a higher atomic number will be..
EBE will be stronger the higher the atomic number is
what is the max amount of electrons the valence shell can have
8 electrons
energy levels of K shell, L shell, and M shell (in KEV)
K= 69.5 kev
L= 12.1 kev
M= 2.7 kev