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Earth, Planets and Space
Fig. 1 | Earth, Planets and Space

Fig. 1

From: Neutron production in the lunar subsurface from alpha particles in galactic cosmic rays

Fig. 1

Comparison of calculated neutron density profiles with the experimental results reported by Woolum et al. (1975). The calculations were performed using seven different kinds of proton interaction models; (a) Cugnon Free, Cugnon Old, Cugnon New, (b) Isobar, JAM, JQMD, JAMQMD. In both figures, neutron production from alpha particles in the GCR was estimated using a scale factor of 3.5; this factor was based on that for protons in the GCR.

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