FLUKA: 16.4} Atmospheric model: density
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16.4} Atmospheric model: density
The atmosphere can be roughly characterized as the region from sea level to
about 1000 km altitude around the globe, where neutral gases can be detected.
Below 50 km the atmosphere can be assumed to be homogeneously mixed and can
be treated as a perfect gas. Above 80 km the hydrostatic equilibrium gradually
breaks down as diffusion and vertical transport become important.
The following Table shows the U.S. Standard Atmosphere depth vs altitude and
vs FLUKA atmospheric layer.
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km US St. km US St. km US St.
FLUKA from Atm. FLUKA from Atm. FLUKA from Atm.
region s.l. Depth region s.l. Depth region s.l. Depth
(g/cm2) (g/cm2) (g/cm2)
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1.0 70.0 0.092 35.0 31.6 9.367 69.0 10.7 242.777
2.0 68.5 0.108 36.0 30.8 10.540 70.0 10.2 260.107
3.0 67.1 0.126 37.0 30.0 11.849 71.0 9.8 278.093
4.0 65.6 0.146 38.0 29.2 13.309 72.0 9.4 296.729
5.0 64.2 0.170 39.0 28.4 14.937 73.0 8.9 316.007
6.0 62.8 0.198 40.0 27.7 16.748 74.0 8.5 335.921
7.0 61.5 0.230 41.0 26.9 18.763 75.0 8.1 356.460
8.0 60.1 0.266 42.0 26.2 21.004 76.0 7.7 377.615
9.0 58.8 0.308 43.0 25.5 23.492 77.0 7.3 399.374
10.0 57.5 0.356 44.0 24.8 26.255 78.0 6.9 421.727
11.0 56.2 0.411 45.0 24.1 29.290 79.0 6.6 444.661
12.0 55.0 0.474 46.0 23.4 32.613 80.0 6.2 468.163
13.0 53.8 0.546 47.0 22.7 36.244 81.0 5.8 492.219
14.0 52.5 0.628 48.0 22.1 40.205 82.0 5.5 516.815
15.0 51.4 0.722 49.0 21.4 44.516 83.0 5.1 541.936
16.0 50.2 0.828 50.0 20.8 49.201 84.0 4.8 567.566
17.0 49.1 0.950 51.0 20.2 54.283 85.0 4.4 593.691
18.0 47.9 1.088 52.0 19.6 59.785 86.0 4.1 620.295
19.0 46.8 1.245 53.0 19.0 65.733 87.0 3.8 647.359
20.0 45.7 1.423 54.0 18.4 72.152 88.0 3.4 674.869
21.0 44.7 1.625 55.0 17.8 79.068 89.0 3.1 702.807
22.0 43.6 1.854 56.0 17.2 86.506 90.0 2.8 731.155
23.0 42.6 2.112 57.0 16.7 94.493 91.0 2.5 759.898
24.0 41.6 2.404 58.0 16.1 103.057 92.0 2.2 789.016
25.0 40.6 2.734 59.0 15.6 112.224 93.0 1.9 818.493
26.0 39.6 3.106 60.0 15.0 122.023 94.0 1.6 848.311
27.0 38.7 3.525 61.0 14.5 132.482 95.0 1.3 878.453
28.0 37.7 3.996 62.0 14.0 143.628 96.0 1.1 908.900
29.0 36.8 4.526 63.0 13.5 155.489 97.0 0.8 939.636
30.0 35.9 5.121 64.0 13.0 168.094 98.0 0.5 970.643
31.0 35.0 5.789 65.0 12.5 181.471 99.0 0.3 1001.903
32.0 34.1 6.538 66.0 12.0 195.646 100.0 0.0 1033.400
33.0 33.3 7.378 67.0 11.6 210.649
34.0 32.4 8.317 68.0 11.1 226.507
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