Disalignment of excited neon atoms due to helium atom collisions in low
T.Shimamura, T.Hanaoka, M.Hasuo and T.Fujimoto
Department of Engineering Physics and Mechanics, Kyoto University
Disalignment rate coefficient of excited neon atoms in the 2p^{5}3p
configuration level due to helium atom collisions has been measured
in low temperature range of 15-77K.It is found that the rate
coefficient of 2p_{2} and 2p_{7} (Pachen notation) states show more
rapid decrease than the theoretical predictions with adecrease in
temperature below 40K.