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Rotational-state-resolved collisional attenuation of hexapole focused hydroxyl radical beams by gas-phase target molecules
Hydroxyl radicals from a supersonic discharge source were rotationally state-selected by a hexapole. Two |J Ω M〉 states were resolved, the | 3 2 3 2 3 2 〉 and | 3 2 3 2 1 2 〉 states. Scattering gases (He, Ar, H 2O, CO 2 NH 3, and CH 3F) were admitted to the hexapole chamber attenuating the hydroxyl...
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| Published in: | Chemical physics letters 1999-05, Vol.305 (5), p.348-352 |
|---|---|
| Main Authors: | , , |
| Format: | Article |
| Language: | English |
| Citations: | Items that this one cites Items that cite this one |
| Online Access: | Get full text |
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| Summary: | Hydroxyl radicals from a supersonic discharge source were rotationally state-selected by a hexapole. Two
|J
Ω
M〉
states were resolved, the
|
3
2
3
2
3
2
〉
and
|
3
2
3
2
1
2
〉
states. Scattering gases (He, Ar, H
2O, CO
2 NH
3, and CH
3F) were admitted to the hexapole chamber attenuating the hydroxyl radical beam. Analysis of the attenuation as a function of gas pressure yielded the relative scattering cross-sections. Simulations of the focusing spectra suggest that elastic scattering rather than
M changing collisions dominate the scattering. No differences in the scattering cross-sections for the
|
3
2
3
2
3
2
〉
and
|
3
2
3
2
1
2
〉
states were observable. |
|---|---|
| ISSN: | 0009-2614 1873-4448 |
| DOI: | 10.1016/S0009-2614(99)00394-2 |