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131) GENERATORS
0 50100
200
Fig. 8—Diagram of initial deposition of 4!I on grass and deposition
velocities in second test,
Table 1— SUMMARY OF DEPOSITION DATA
Deposition velocity, cm/sec
Deposition medium
Test 1
Test 2
Grass
Soil
Carbon
Sticky paper
0.61
0.68
0.57
0.14
0.98
0.38
0.73
0.41
.
during both tests. This indicates the strong influence of grass density
on the amount of radioiodine deposited per unit area. The soil contamination indicates the same influence, which manifests itself in an
inverse relation with grass density. The deposition velocities oncarbon
plates and sticky paper, which are standard deposition mediums, were