week ten Flashcards
(14 cards)
what is the nucleus composed of
protons and neutrons
what is an atom composed of
central nucleus and orbiting electrons
what determines an atom’s mass number or atomic weight
the number of protons and neutrons
what determines the atomic number of an atom
the number of protons inside the nucleus equals the number of electrons
what shell has the highest energy level
k
what is the heart of the x ray machine
tubehead
what are the components of an x ray machine (9)
tubehead, pid, metal housing, insulating oil, tubehead seal, aluminum disk, lead collimator, cathode, anode
tubehead seal
aluminum or leaded glass covering of the tubehead, seals oil in, acts as a filter for x ray beam
aluminum disk
filters out nonpenetrating longer wavelength x rays
lead collimator
lead plate, restricts the size of the x ray beam
cathode
supplies the necessary electrons to produce x rays, negative, consist of a tungsten wire filament
parts of a cathode
tungsten filament, molybdenum cup
anode
positive, thin tungsten plate embedded in cooper, purpose is to convert electrons into x ray photons
parts of anode
tungsten target, cooper stem
