Ionization and fragmentation of metallic clusters (Nan) induced by ion impact

Autor:	E. Monnand, J. C. Rocco, D. Jalabert, Frédéric Chandezon, C. Guet, C. Ristori, M. Maurel, Bernd A. Huber
Rok vydání:	1995
Předmět:	Nuclear and High Energy Physics Chemical ionization Fragmentation (mass spectrometry) Projectile Chemistry Ionization Physics::Atomic and Molecular Clusters Electron Atomic physics Instrumentation Ion source Excitation Ion
Zdroj:	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms. 98:482-487
ISSN:	0168-583X
Popis:	Neutral sodium clusters (Nan, n ≤ 800) have been ionized in collisions with different ion beams (H+, O5+, Ar8+) at collision energies between 1 and 19 keV per charge. From an analysis of the measured mass / charge spectrum critical sizes for multiply charged clusters are deduced and compared with those obtained by laser-ionization. The dominant ionization mechanism depends on the charge state of the projectile. For highly charged ions the multi-electron capture process leads to the formation of relatively “cold” multiply charged clusters; in the proton case multiple ionization is discussed in terms of electronic excitation followed by electron evaporation on a sub-nanosecond time scale.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::30166fd8a244b753559a6d630ccce664 https://doi.org/10.1016/0168-583x(95)00172-7 Zobrazit plný text záznamu Full Text from ScienceDirect