Optically Timed Submillimeter Time-of-Flight Mass Spectrometry
| Autor: | Bhardwaj Vr, P. W. Dooley, Rayner Dm, Paul B. Corkum |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
Electric fields
Analytical chemistry Physics::Optics Mass spectrometry Analytical Chemistry Atmospheric-pressure laser ionization Ion law.invention Optics Isotopes Physics::Plasma Physics law Ionization Physics::Atomic and Molecular Clusters Physics::Atomic Physics Laser pulses isotope Explosion detection polarimetry optical rotation business.industry Chemistry time of flight mass spectrometry Laser Ion source Femtosecond laser pulses Femtosecond Laser ionization Time-of-flight mass spectrometry business |
| Zdroj: | Analytical Chemistry. 76:262-266 |
| ISSN: | 1520-6882 0003-2700 |
| Popis: | We demonstrate that using intense femtosecond laser pulses to optically time ion flight can lead to a miniature time-of-flight mass spectrometer. After laser ionization, the molecular ion is accelerated by a static electric field and detected using a second, delayed laser pulse. The relative positions of the two laser foci determine the ion flight distance while the time separation of the laser pulses fixes the ion flight time. We mass-resolve CS(2) or C(6)H(6) isotopes after a flight distance of 360 microm using either double ionization or Coulomb explosion detection. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|