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Vacuum-UV negative photoion spectroscopy of
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10.1063/1.2894869
/content/aip/journal/jcp/128/12/10.1063/1.2894869
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/12/10.1063/1.2894869

Figures

Image of FIG. 1.
FIG. 1.

Cross sections for anion production following photoexcitation of . Note that the and spectra are not on an absolute scale. Ion yields were recorded as a function of photon energy between 12 and with a step size of and a wavelength resolution of . These resolutions are equivalent to at and at . The ion yields are compared with the threshold photoelectron spectrum of (Ref. 33).

Image of FIG. 2.
FIG. 2.

Pressure dependence of and anion signals from .

Image of FIG. 3.
FIG. 3.

Cross sections for anion production following photoexcitation of . [(a) and (b)] and ion yields recorded as a function of photon energy between 12 and with a step size of and a wavelength resolution of (this work). These resolutions are equivalent to at and at . The cross sections are on an absolute scale. [(c) and (d)] and ion yields from Scully (Ref. 31) recorded over a narrower energy range at higher resolutions of 0.5 and , respectively. The cross sections are now on a relative scale. (e) Threshold photoelectron spectrum of for comparison (Ref. 33).

Image of FIG. 4.
FIG. 4.

Cross sections for anion production following photoexcitation of . Ion yields were recorded as a function of photon energy between 10.5 and with a step size of and a wavelength resolution of . These resolutions are equivalent to at and at . Note that the spectrum below was recorded with the lower-energy grating, and the data spliced into the higher-energy spectrum. Solid arrows in the through yields show energies of the thermochemical thresholds calculated for reactions (9)–(14), respectively.

Image of FIG. 5.
FIG. 5.

Cross sections for anion production following photoexcitation of . Note that the spectrum is not on an absolute scale. Ion yields were recorded as a function of photon energy between 10.5 and with a step size of and a wavelength resolution of . These resolutions are equivalent to at and at . The ion yields are compared with the threshold photoelectron spectrum of (Ref. 13).

Tables

Generic image for table
Table I.

Appearance energies, cross sections, and quantum yields for anions observed from photoexcitation of , , and in the range of .

Generic image for table
Table II.

ion pair quantum yields at energies below and above the onsets of ionization for , , and . Cross sections from this work are normalized to photoabsorption cross sections for (Ref. 35), (Ref. 2), and (Ref. 20) to give values for .

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/content/aip/journal/jcp/128/12/10.1063/1.2894869
2008-03-31
2014-04-18
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Vacuum-UV negative photoion spectroscopy of SF5CF3
http://aip.metastore.ingenta.com/content/aip/journal/jcp/128/12/10.1063/1.2894869
10.1063/1.2894869
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