Radiation & Shielding Flashcards
1
Q
tenth-value thickness
A
the distance the uncollided radiation must travel to be reduced to 10% of the initial value
2
Q
half-value thickness
A
the distance required to reduce the uncollided radiation to one-half of its initial value
3
Q
mean-free-path length
A
the average distance that a particle streams from the point of its birth to the point at which it makes its first interaction
4
Q
geometric attenuation
A
decreasing dose with increasing distance
5
Q
material attenuation
A
decreasing dose as a function of shielding material
6
Q
Somatic Effects
A
Effects of radiation limited to the exposed individual, as distinguished from genetic effects, that may also affect subsequent unexposed generations.
7
Q
collimated
A
make (rays of light or particles) accurately parallel.
