The simultaneous isotopic analysis of lithium and boron by the Li 2 BO 2 ion beam method involves measurements of two different molecular abundance ratios (say, R j AEd j and R k AEd k ), and subsequently extensive calculations to arrive at the analyte isotopic ratios (say, L and Y). It is not prese
Microwave electronic spectra of the Ar2+ and Ne2+ ions: a combined neutral/ion molecular beam technique
โ Scribed by Alan Carrington; Andrew M. Shaw; Susie M. Taylor
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 522 KB
- Volume
- 241
- Category
- Article
- ISSN
- 0009-2614
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โฆ Synopsis
We describe a new ion source in which a nozzle beam of neutral molecules is ionised by an electron beam and the resulting molecular ion beam is studied by microwave spectroscopic methods. This ionisation technique results in significant population of the near-dissociation levels of the molecular ion, so that a sensitive state-selective electric field dissociation method can be used to detect the spectra. We have observed the first state-to-state resonant electronic spectra of the Ar~-and Ne~-ions.
๐ SIMILAR VOLUMES
Ab initio quantum chemical calculations (MPt/4-31G\*\*) were performed for the dihydrogen elimination reaction from protonated formaldehyde. The energy difference between reactants and products and the activation energies were found to be in good agreement with the corresponding experimental quantit