Introduction to Health Physics: Fourth Edition - Ruang Baca FMIPA UB

Dose buildup factor, B
Dose buildup factor, B
100
10
10.1
1
0 2 4 6 8 10 12 14 16 18 20
Relaxation lengths, μx
10
10.1
1
0 2 4 6 8 10 12 14 16
Relaxation lengths, μx
Eo = 10 MeV
6
4
3
1
Eo = 10 MeV
10
3
2
1
0.5
0.5
EXTERNAL RADIATION SAFETY 525
Figure 10-9. Dose buildup factor in lead for a
point isotropic gamma-ray source of energy E 0.
The 10 in 10.1 on the ordinate applies to the
lower curves, while the 1 in 10.1 on the ordinate
applies to the upper curves. (Reproduced from
Radiological Health Handbook. Rev ed. Washington,
DC: US Government Printing Office; 1970.)
Figure 10-10. Dose buildup factor in lead for a plane
monodirectional gamma-ray source of quantum energy
E 0. The 10 in 10.1 on the ordinate applies to the lower
curves, while the 1 in 10.1 on the ordinate applies to
the upper curves. (Reproduced from Radiological Health
Handbook. Rev ed. Washington, DC: US Government
Printing Office; 1970.)