Columbia subject headings:
Harvard subject headings:
Beryllium.
Boron.
Collisions (Nuclear Physics)
Cross sections (Nuclear Physics)
Fusion reactors.
Ion bombardment.
Plasma (Ionized gases)
Plasma-wall interactions.
Princeton subject headings:
Beryllium.
Boron.
Ion-atom collisions.
Nuclear fusion.
Plasma (Ionized gases)