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The relative contribution to absorbed dose rate of different GCR nuclei has been calculated as a function of the solar modulation parameter ϕ, that is shown on the x-axis. The different GCR nuclei are indicated using different line markers and colors (see legend). For the ICRU phantom, the most contributing GCR species are protons, followed by helium, oxygen and carbon nuclei. The contribution of Z > 1 GCR species increases with ϕ at the cost of the proton contribution. The CRaTER-μ detector experiences a significantly higher contribution due to Z > 2 GCR nuclei, however, with shielding, this effect is somewhat suppressed.
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