抄録
Collisional dynamics of size- and translational-energy-selected protonated water clusters H+(H2O)n (n = 2-11) in single collisions with D2O were investigated using guided-ion beam tandem mass spectrometry. The dominant reaction channel for the collision involves the incorporation of D2O into H+(H2O)n at low collision energy, whereas at high collision energy, the dissociation of H+(H2O)n is predominant. The measured total reaction cross section of H+(H2O)n with D 2O is found to depend strongly on the cluster size; the cross section drastically increases as the cluster size increases from n = 4 to 5, 6 to 7, and 8 to 9 and has local minima at n = 6 and 8 at collision energies of 0.05 and 0.10 eV, respectively. The size dependence of the total cross section is discussed herein in terms of a comparison with the collision cross section obtained from ab initio calculations.
本文言語 | English |
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ページ(範囲) | 10904-10910 |
ページ数 | 7 |
ジャーナル | Journal of Physical Chemistry A |
巻 | 107 |
号 | 50 |
DOI | |
出版ステータス | Published - 2003 12 18 |
ASJC Scopus subject areas
- Physical and Theoretical Chemistry