Helium Difluoride: Possible Preparative Techniques Based on Nuclear Transmutations.
It might be possible to prepare difluoride by beta decay of tritium, lithium-6 transmutation, or alpha-particle bombardment. In the first method, which may be the most feasible, tritiated potassium bifluoride could be used as a host lattice. The beta-decay recoil energy would not dislodge the daughter helium atom from the host site, thus helium difluoride could perhaps be formed in an ideally shaped lattice site.
Pimentel
G C
GC
Spratley
R D
RD
Miller
A R
AR