Experimental observation of dissociative electron attachment to S2O and S2O2 with a new spectrometer for unstable molecules
Abstract
A new spectrometer, electron radical interaction chamber, has been developed to study dissociative electron attachment to unstable molecules such as free radicals. It includes a trochoidal electron monochromator and a time-of-flight mass spectrometer. Radicals are generated with a microwave discharge at 2.45 GHz. Preliminary data are presented for radicals formed when a mixture of helium and sulphur dioxide was passed through the microwave discharge. Several new resonances are observed with the discharge on. Resonances at 0 eV (S-), 0.8, 1.2, 3.0 eV (SO-) and 3.7 eV (SO- and S2O-) are assigned to the radical S2O2 and a resonance at 1.6 eV (S-) is assigned to S2O. No new resonances have been assigned to SO, which was also generated in the microwave discharge.
- Publication:
-
Journal of Physics B Atomic Molecular Physics
- Pub Date:
- February 2005
- DOI:
- 10.1088/0953-4075/38/3/009
- Bibcode:
- 2005JPhB...38..255F