ORNL-2106 - the Molten Salt Energy Technologies Web Site

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Fig. 5.1.1. Geometry of Fuel-Inconel-Sodium-
lnconel Slab.
centimeters and in mean free paths. The fuel is
NaF-&F4-u~, (52.5-42.5-5 mole %). The per-
centages of energy absorption throughout the slab
for various angles of incidence of gomma rays are
given in Fig. 5.1.2. The percentage of the total
energy incident on the slab that is reflected, ab
sorbed, or transmitted for each angle of incidence
is shown in Table 5.1.1, and the percentage of the
energy that is absorbed in each of the four regions
of the slab is shown in Table 5.1.2.
A plot of the dose buildup factor as a function
of the distance through the slab, in mean free
paths (mfp), is presented in Fig. 5.1.3. The sharp
break in the curves at 2.75 mfp is due to the rapid
attenuation of low-energy gamma rays (degraded
principally in the sodium) by the final lnconel slab.
PERiOD ENDING JUNE 10, 1956
Fig. 5.1.2. Percentage of Total Energy from
Incident I-Mev Gamma Rays That Is Absorbed in
a Fuel-Inconel~Sodium-lnconel Slab as a Function
of Normal Distance into the Slab.
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