CF3Br

agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-011210ak.pxpagust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-021210ak.pxpagust,www,....cf3br/PPT-011210ak.pptagust,www,....cf3br/PPT-021210ak.pptagust,heima,....CF3Br/Sept10/PXP-291110ks/Leiðrétt-291110ks-011210ak.pxpagust,heima,....CF3Br/Sept10/PXP-291110ks/Leiðrétt-291110ks-021210ak.pxp

1hv spectrum corrected/shifted

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8684828078767472x10

3

agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-011210ak.pxp

Br atomic lines(2+1)REMPIFrom “short scans”For spectra corrected for powerAs Icorr = Imeasured / P5

NB: “mW-power correction”

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)

Irel

2hv

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84828078767472x10

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agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-021210ak.pxp

Br atomic lines(2+1)REMPIFrom “short scans”For spectra corrected for powerAs Icorr = Imeasured / P5

NB: “mW-power correction”

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)

Irel

2hv

1hv spectrum corrected/shifted

NB: We assume that the relative intensities of the Br atomic lines for the “short scans” and low step size (0.1 cm-1) are more reliable than those orthe “long scans” and larger step size (0.2 cm-1)

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8684828078767472x10

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Br atomic lines“short scans”“mW-power corrected”0.1 cm-1 step size

Br atomic lines“mJ-power corrected”0.2 cm-1 step size

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)Irel

2hv

agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-011210ak.pxp

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84828078767472x10

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Br atomic lines“short scans”“mW-power corrected”0.1 cm-1 step size

Br atomic lines“mJ-power corrected”0.2 cm-1 step size

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)Irel

2hv

agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-021210ak.pxp

1hv spectrum corrected/shifted

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8079787776x10

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Br atomic lines“mW-power corrected”0.1 cm-1 step size

Br atomic lines“mJ-power corrected”0.2 cm-1 step size

It is not clear from the spectra comparison belowhow to correct relative intensities of Br atomic lines recorded by “long scans”Band step size 0.2 cm-1, since there does not seem to be any systematicrelationship in relative intensities when compared with the “short scan” spectra

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2hv

agust,heima,....CF3Br/Sept10/PXP-291110ks/Br 1D-REMPImW-291110ks-011210ak.pxp

• The conclusion is that Br atomic lines in the high wavenumber range (> 80000cm-1) need to be rescanned by short scans and small step sizes(0.1 cm-1) in order to obtain more relyable picture of the relative intensities of The bands in that region.

• Based on the data presented in slide 2, abowe, for Br atomic lines recorded in the range 71000 – 80000 cm-1 (“short scans”, small step sizes) the largest signalsare observed for the region of excitation to the [CF3Br+,2E]c ;5p Rydberg state whereas atomic lines corresponding to excitations to the region to the [CF3Br+,2E]c ; 5s Rydberg state are very weak. This suggests that the major channelFor formation of Br is via excitation to the [CF3Br+,2E]c ;5p Rydberg state.This fits nicely with the results of the CF3

+ formation analaysis:See: http://www3.hi.is/~agust/rannsoknir/rempi/cf3br/PPT-201110ak.pptand below

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tens

ity

86x103

84828078767472Energy (cm-1)

C-503 C-540A C-480 I1

agust,heima,....CF3Br/Sept10/PXP-291110ks/Leiðrétt-291110ks-011210ak.pxp

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)

Irel

2hv

CF3+

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828078767472Energy (cm-1)

C-503 C-540A C-480 I1

agust,heima,....CF3Br/Sept10/PXP-291110ks/Leiðrétt-291110ks-021210ak.pxp

Digitized 1hv spectrum fromS. Eden et al., CP, 322, 313 (2006)

Irel

2hv

CF3+

1hv spectrum corrected/shifted