Particle parameters
Artist's concept of InSight Lander on Mars. Credit: NASA/JPL-Caltech
| Particle | Mimimum Energy MeV | Max Energy MeV | Max Current in uA | Max Flux protons/(cm2-sec) |
|---|---|---|---|---|
| Protons | 5.45*# | 66.6**# | 0.100 | 1.6 X 1010 |
| Deuterons | 40 | 0.100 | 1.6 X 1010 | |
| Alphas | 60 | 0.100 | 8X 109 | |
|
Helions Neutrons |
90 65 |
0.100 N/A |
8 X 109 1 X 105 |
* This energy is achieved by degrading the 10.7 MeV cyclotron energy by 72.6um( 3 mils) Ta foil.
** This energy is achieved by degrading the 67.5 MeV cyclotron energy by 6.35um( 0.25 mils) Ta foil.
#Energy after Ta dispersion foil + SEEM(Al 101.6um) + Exit foil (127um Kapton) + air gap
By changing the Cyclotron Energy and the Ta foil thickness other energies can be obtained.
Neutrons are generated on a thick Beryllium target and have a broad spectrum from zero to max proton energy.