Blackbody infrared radiative dissociation at low temperature:: hydration of X2+(H2O)n, for X = Mg, Ca

被引：113
|
作者：
Wong, RL [1 ]
Paech, K [1 ]
Williams, ER [1 ]
机构：
[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA
来源：
INTERNATIONAL JOURNAL OF MASS SPECTROMETRY | 2004年 / 232卷 / 01期
基金：
美国国家科学基金会;
关键词：
hydration; BIRD; binding energies; metal ions; dissociation;
D O I：
10.1016/j.ijms.2003.11.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
A new apparatus for making blackbody infrared radiative dissociation (BIRD) measurements at below ambient temperature is described, and its use for measuring threshold dissociation energies of weakly bound clusters is demonstrated. Hydration energies are determined for alkaline-earth metal water clusters, X2+(H2O)(n), X = Mg, Ca and n = 8-10. For n = 8 and 9, the energies obtained from BIRD measurements are in excellent agreement with values reported previously, but for n = 10, the energies are slightly lower than those determined previously using the high-pressure ion source mass spectrometry (HPMS) equilibrium method. (C) 2003 Elsevier B.V. All rights reserved.
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页码：59 / 66
页数：8
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