Fig. 2From: Neutron production in the lunar subsurface from alpha particles in galactic cosmic raysComparison of calculated neutron density profiles with the experimental results resported by Woolum et al. (1975). The calculations were performed using the JAM interaction model for the three different solar modulation parameters. 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.Back to article page