Table 6‑1: Summary table of relevant primary and secondary radiations to be quantified by shielding model as a function of radiation effect and mission type

(Part 2 of 2)

Radiation effect	Mission type	Important primary radiations	Important secondary radiations
Single event effects	LEO	trapped protons solar energetic particles cosmic rays	secondary neutrons (special susceptibilities or heavily shielded situations; not typically a concern for commercial missions)
	MEO	trapped protons (low –MEO) solar energetic particles cosmic rays
	GEO	solar energetic particles cosmic rays
	Interplanetary space	cosmic rays solar energetic particles other planetary trapped-belts (e.g. Jovian)
	Planetary lander	cosmic rays solar energetic particles	secondary protons and heavier ions, secondary neutrons
	Missions involving RTGs or strong radioactive sources	neutrons
Radiation-induced backgrounds	(See tables in Clause 10)
Radiobiological effects	LEO	trapped protons trapped electrons solar protons cosmic rays	X-rays from electrons Secondary protons and neutrons
	Interplanetary space	cosmic rays solar energetic particles other planetary trapped-belts (e.g. Jovian) solar X-rays	secondary protons and heavier ions, secondary neutrons
	Planetary lander	cosmic rays solar energetic particles	secondary protons and heavier ions, secondary neutrons
	Missions involving RTGs or strong radioactive sources	g-rays and neutrons	neutrons