1. 1hv spectrum corrected/shifted
CF3Br
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp
agust,www,....cf3br/PPT ak.ppt
agust,heima,....CF3Br/Sept10/PXP ks/Leiðrétt ks ak.pxp agust,heima,....CF3Br/Sept10/PXP ks/Leiðrétt ks ak.pxp

2. Irel 2hv Br atomic lines (2+1)REMPI From “short scans”
For spectra corrected for power
As Icorr = Imeasured / P5
NB: “mW-power correction”
Irel
Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp

3. 1hv spectrum corrected/shifted
Br atomic lines
(2+1)REMPI
From “short scans”
For spectra corrected for power
As Icorr = Imeasured / P5
NB: “mW-power correction”
Irel
Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp

4. 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 or
the “long scans” and larger step size (0.2 cm-1)

5. Irel 2hv Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
Irel
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
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp

6. 1hv spectrum corrected/shifted
Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
1hv spectrum corrected/shifted
Irel
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
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp

7. Irel 2hv It is not clear from the spectra comparison below
how 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 systematic
relationship in relative intensities when compared with the “short scan” spectra
Irel
Br atomic lines
“mW-power corrected”
0.1 cm-1 step size
Br atomic lines
“mJ-power corrected”
0.2 cm-1 step size
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Br 1D-REMPImW ks ak.pxp

8. 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 – cm-1 (“short scans”, small step sizes) the largest signals
are 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 channel
For 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:
and below

9. Irel CF3+ 2hv Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
CF3+
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Leiðrétt ks ak.pxp

10. 1hv spectrum corrected/shifted
Irel
Digitized 1hv spectrum from
S. Eden et al., CP, 322, 313 (2006)
CF3+
2hv
agust,heima,....CF3Br/Sept10/PXP ks/Leiðrétt ks ak.pxp