60 MeV gammas interact in a Ca target. The invariant double-differential proton cross section is measured vs. angle and kinetic energy. - Reference: D. Ryckbosch et al., Phys. Rev. C 42, 444 (1990).
Simulation Conditions - Geant4 version: 6.1
- Models: CHIPS
Comments - The variable k on the horizontal axis is the average of the proton momentum and kinetic energy
- at 60 degrees the CHIPS model under-estimates the data by about 20%
- at 90 degrees the model agrees fairly well with the data up to about 170 MeV, where it begins to over-estimate the data by up to a factor of 2
- at 150 degrees the model over-estimates by an average of perhaps 10% or less
Summary - The CHIPS model agrees fairly well with data and does better at backward angles than at at forward angles.
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