This work measures the absolute photoionization cross-section of the vinyl radical (σvinyl(E)) between 8.1 and 11.0 eV. Two different methods were used to obtain absolute cross-section measurements: 193 nm photodissociation of methyl vinyl ketone (MVK) and 248 nm photodissociation of vinyl iodide (VI). The values of the photoionization cross-section for the vinyl radical using MVK, σvinyl(10.224 eV) = (6.1 ± 1.4) Mb and σvinyl(10.424 eV) = (8.3 ± 1.9) Mb, and using VI, σvinyl(10.013 eV) = (4.7 ± 1.1) Mb, σvinyl(10.513 eV) = (9.0 ± 2.1) Mb, and σvinyl(10.813 eV) = (12.1 ± 2.9) Mb, define a photoionization cross-section that is ∼1.7 times smaller than a previous determination of this value.
REFERENCES
1.
C. A.
Taatjes
et al., Phys. Chem. Chem. Phys.
10
, 20
(2008
).2.
R.
Flesch
et al., Phys. Chem. Chem. Phys.
1
, 5423
(1999
).3.
J. C.
Robinson
et al., J. Chem. Phys.
119
, 5311
(2003
).4.
J. D.
Savee
et al., J. Chem. Phys.
136
, 134307
(2012
).5.
H.
Xu
and S. T.
Pratt
, “Photoionization cross section of the propargyl radical and some general ideas for estimating radical cross sections
,” J. Phys. Chem. A
(published online).6.
A.
Fahr
et al., J. Phys. Chem.
97
, 1502
(1993
).7.
C. A.
Taatjes
et al., J. Phys. Chem. A
112
, 9336
(2008
).8.
J. C.
Loison
, J. Phys. Chem. A
114
, 6515
(2010
).9.
B.
Gans
et al., J. Phys. Chem. A
114
, 3237
(2010
).10.
P.
Zou
et al., Phys. Chem. Chem. Phys.
10
, 713
(2008
).11.
O.
Welz
et al., Phys. Chem. Chem. Phys.
14
, 3112
(2012
).12.
D. L.
Osborn
et al., Rev. Sci. Instrum.
79
, 104103
(2008
).13.
See supplementary material at http://dx.doi.org/10.1063/1.4817320 for tables of absolute photoionization spectra determined in the present study.
14.
J.
Berkowitz
et al., J. Chem. Phys.
88
, 7396
(1988
).15.
J. D.
Savee
et al., Phys. Chem. Chem. Phys.
14
, 10410
(2012
).16.
B. L.
FitzPatrick
et al., J. Chem. Phys.
133
, 094306
(2010
).© 2013 AIP Publishing LLC.
2013
AIP Publishing LLC
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