| Autor: |
S. V. K. Kumar, K. C. Rao, V. S. Prabhudesai |
| Rok vydání: |
2011 |
| Předmět: |
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| Zdroj: |
The Review of scientific instruments. 82(11) |
| ISSN: |
1089-7623 |
| Popis: |
A new design of a linear time of flight mass spectrometer (ToFMS) is implemented that gives nearly field-free interaction region without compromising on the mass resolution. The design addresses problems that would arise in a conventional Wiley-McLaren type of ToFMS: (i) field leakages into the charged particle-molecule interaction region from various components of the mass spectrometer, including that through the high transparency mesh used to obtain evenly distributed electric fields; (ii) complete collection and transportation of the ions produced in the interaction region to the detector, which is essential for high sensitivity and cross section measurements. This ToFMS works over a wide range of masses from H(+) to a few hundred Daltons and would be the most suitable for low energy charged particle-molecule interaction studies. Performance of the ToFMS has been tested by measuring the partial ionization cross sections for electron impact on CF(4). |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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