1
Q
Then sections of the most metals, moderate thicknesses of graphite and beryllium, small electronic components, wood, plastic, etc.
A
50 kV
2
Q
5 inch aluminum or equivalent
A
150 kV none or lead foil
3
Q
1 1/2 inch steel or equivalent
A
150 kV fluorescent
4
Q
3 inch steel or equivalent
A
300 kV lead foil
5
Q
4 inch steel or equivalent
A
300 kV fluorescent
6
Q
3 1/2 inch steel or equivalent
A
400 kV lead foil
7
Q
4 1/2 inch steel or equivalent
A
400 kV florescent
8
Q
5 inch steel or equivalent
A
1000 kV lead foil
9
Q
8 inch steel or equivalent
A
2000 kV lead foil or 1000 kV fluorescent
10
Q
16 inch steel or equivalent
A
8 to 25 MeV lead foil
11
Q
20 inch steel or equivalent
A
8 to 25 MeV fluorescent
