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10"

O All Energies o

Thermal to 20 MeV

1 to 10 MeV

10"

Figure 2.42: Calculated depth dependence of neutron intensity for different energy ranges compared with measurements during solar minimum at A = 42° (Armstrong et al., 1973). (Multiply readings on ordinate with appropriate scale factor to get true neutron flux.)

Atmospheric Depth [ g cm" ]

Figure 2.42: Calculated depth dependence of neutron intensity for different energy ranges compared with measurements during solar minimum at A = 42° (Armstrong et al., 1973). (Multiply readings on ordinate with appropriate scale factor to get true neutron flux.)

• Armstrong et al. (1973) calculation o Boella et al. (1963) measurement - Holt et al. (1966) measurement

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