Table 2 Comparison of measured silicon dose-rates (mGy/day) to model calculations in the ISS Cupola and US Lab as a function of vertical cutoff rigidity (GV) during the Artemis-I mission

From: Validated space radiation exposure predictions from earth to mars during Artemis-I

Rigidity bin (GV)

Silicon dose-rate (mGy/day)

Cupola

US Lab

REM

Model

Model (G4)

RAD

Model

Model (G4)

0-1

0.248

0.238 (-4)

0.241 (-3)

0.269

0.239 (-11)

0.243 (-10)

1-2

0.219

0.211 (-4)

0.213 (-3)

0.244

0.210 (-14)

0.213 (-13)

2-3

0.180

0.168 (-7)

0.170 (-6)

0.201

0.166 (-18)

0.168 (-17)

3-4

0.151

0.137 (-9)

0.139 (-8)

0.171

0.134 (-21)

0.137 (-20)

4-5

0.125

0.113 (-10)

0.116 (-8)

0.145

0.110 (-24)

0.113 (-22)

5-6

0.109

0.095 (-13)

0.098 (-10)

0.125

0.092 (-27)

0.095 (-24)

6-7

0.097

0.081 (-17)

0.085 (-12)

0.112

0.078 (-31)

0.082 (-27)

7-8

0.087

0.070 (-20)

0.075 (-14)

0.101

0.067 (-34)

0.072 (-29)

8-9

0.078

0.061 (-22)

0.066 (-15)

0.092

0.058 (-37)

0.063 (-31)

9-10

0.070

0.054 (-23)

0.059 (-15)

0.082

0.051 (-38)

0.057 (-31)

10-12

0.059

0.045 (-23)

0.051 (-14)

0.069

0.043 (-39)

0.048 (-31)

12-14

0.052

0.038 (-27)

0.043 (-16)

0.061

0.036 (-41)

0.041 (-32)

>14

0.045

0.032 (-28)

0.038 (-16)

0.054

0.030 (-44)

0.035 (-34)

  1. Values in parentheses are the relative difference (%) between model and measurement. Two sets of model calculations are provided. One set utilizes the native cross sections models developed for HZETRN2020, and the other set utilizes HZETRN2020 but with a coupled nucleon and pion interaction database generated from the Geant4 toolkit as described in the Methods section.