화학공학소재연구정보센터
Journal of Chemical Physics, Vol.107, No.7, 2386-2394, 1997
Deexcitation of Ne(P-3(1)) and Ne(P-3(2)) in Collisions with Ar, Kr, and Xe
The cross sections for the deexcitation of Ne(P-3(1)) and Ne(P-3(2)) by Ar, Kr, and Xe have been measured as a function of the mean collisional energy in the range of 17-38 meV or in the temperature range from 133 K to 295 K using a pulse radiolysis method combined with time-resolved optical absorption spectroscopy. The deexcitation cross sections are in the range of 18-26 Angstrom(2) and 11-20 Angstrom(2) for Ne(P-3(1)) and Ne(P-3(2)). respectively, and increase slightly with increasing the collisional energy. The absolute experimental cross sections for the Ne(P-3(1)) deexcitation are in relatively good agreement with the total Penning ionization cross sections obtained by an optical model calculation, which shows the importance of an electron-exchange interaction in the deexcitation of Ne(P-3(1)) in collisions with Ar, Kr, and Xe. The absolute cross section values for the deexcitation of resonant Ne(P-3(1)), which are only slightly larger than those for the deexcitation of metastable Ne(P-3(2)), have also supported the discussion on the deexcitation mechanism of Ne(P-3(1)) by Ar, Kr, and Xe.