Surface Induced Ionization of Water Clusters
作者： D. Yu. Dubov , A. A. Vostrikov
DOI: 10.1007/978-94-017-2645-0_121
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摘要: The paper presents the results of molecular bean studies collisional ionisation water clusters. Both positive and negativfe ions were observed in scattered flow when clusters (H 2 O)n>300 collided with various solid surfaces at velocity about 1.3 km/s. In measurements cf total ion currents probability charge removal from surface was determined dependence on incident angle, mean cluster size (up to 3 000 molecules), target material. proposed model includes 1) formation an pair during ionic dissociation a vibrationally excited molecule colliding surface; 2) asymmetric neutralization by 3) inertial (recoil) surface. However some suprising features measured angular energetic distributions emitted charged particles, viz. rainbow spatial pattern emission correlation between energy angle reversed usual scattering, show that particles may be only partially removal.
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