| Autor: |
Alistair Clark, A. Marshall, Ravi P. Singhal, K.W.D. Ledingham, C. Kosmidis, Robert M. Deas |
| Rok vydání: |
1995 |
| Předmět: |
|
| Zdroj: |
AIP Conference Proceedings. |
| ISSN: |
0094-243X |
| DOI: |
10.1063/1.47622 |
| Popis: |
Laser induced multiphoton ionization (MPI) has been used to produce positive and negative ions at atmospheric pressure in an ion mobility spectrometer. This paper deals particularly with the application of this technique to the ultra‐trace detection of a number of energetic materials such as RDX and PETN.In conventional ion mobility spectrometry (IMS), a radioactive 63Ni β‐foil is used as the ionization source. The laser IMS spectra will be compared with the 63Ni spectra and it will be shown that the analyte ions produced by laser ionization have a wavelength dependent fingerprint which provides an additional degree of selectivity. It is felt that this new approach to IMS will develop considerably the scope and applicability of this powerful technique. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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