He, Ne, Ar, Kr and Xe are trapped in solid carbon nanotube as well as C-60
and (NaH)(4)C-60 under the conditions of ambient temperature and pressure.
The mass analyzed thermal desorption spectra are observed even above room t
emperature. Ar2p X-my photoelectron spectra show different chemical shift T
hese facts suggest that rare gases have charge and are in valence state.