On ionisation induced unimolecular dissociation of sodium clusters |
| |
Authors: | M M Kappes M Schär E Schumacher A Vayloyan |
| |
Institution: | 1. Institute of Inorganic and Physical Chemistry, University of Bern, Bern, Switzerland
|
| |
Abstract: | Fragmentation of sodium cluster ions (Na x + ,x<42) was studied via photoionisation of neutral precursors. Expansions of metal vapor out of cylindrical and conical nozzles yielded supersonic beams with differing cluster compositions. Measurements of photoionisation efficiency curves in the 3–6 eV range for both types of expansion allow quantitative separation of direct ionisation and unimolecular dissociation contributions to specific ion signals. Data for Na 8 + and Na 7 + are analysed to yield lower limits on bond energies. Results obtained for larger clusters are also discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |