Radiologic Physics Study
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Rationales
Included
, Ionization Change in the number of electrons
Electron capacity formula 2n^2 (n=shell number)
Electron binding energy Energy needed to eject electrons out of orbit.
Electron binding energy ______ as atomic number Increases
increases
Octet rule The outer shell of the atom can not have more than 8 electrons.
Velocity formula V= freq X wavelength
Frequency and wavelength, direct or indirect? Indirect (freq increases, wavelength decreases).
Discovery of x-rays (date, person, location) Wilhelm Conrad Rontgen, Nov 8, 1895.
Name the 12 x-ray properties 1. Made with electromagnetic energy
2.Electrically neutral
3. Poly-energetic/heterogeneous energies
4.Releases heat when passing through matter
5. Travels in straight lines
6. Travels at the speed of light (3X10^-8)
7.Ionize matter
8. Fluoroscience in certain crystals
9. Cannot be focused by lenses
10. Affects photographic film
11. Produces chemical and biological changes in matter
12. Produces secondary radiation.
X-ray frequency 10^18-10^20 Hz.
Natural source of radiation Gamma rays.
Alpha Particles Heavy, slow, positive.