In:
Chinese Journal of Chemical Physics, AIP Publishing, Vol. 22, No. 6 ( 2009-12-01), p. 655-662
Kurzfassung:
We introduce a modification of reflectron time-of-flight mass spectrometer for laser photodissociation of mass-selected ions. In our apparatus, the ions of interests were selected by a mass gate near the first space focus point and decelerated right after the mass gate, were then crossed by a laser beam for dissociation. The daughter ions and surviving parent ions were re-accelerated and analyzed by the reflectron time-of-flight mass spectrometer. Compared to the designs reported by other research groups, our selection-deceleration-dissociation-reacceleration approach has better daughter-parent-ions-separation, easier laser timing, and better overlapping between the ion beam and laser beam. We also conducted detailed calculations on the parent ion and daughter ion flight times, and provided a simplified formula for the calibration of daughter ion mass.
Materialart:
Online-Ressource
ISSN:
1674-0068
,
2327-2244
DOI:
10.1088/1674-0068/22/06/655-662
Sprache:
Englisch
Verlag:
AIP Publishing
Publikationsdatum:
2009
ZDB Id:
2381472-X
SSG:
6,25
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