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HBr, F1D2, v´=1 <-<- X spectrum agust,www,....June11/PPT-081211ak

HBr, F1D2, v´=1 <-<- X spectrum agust,www,....June11/PPT-081211ak.ppt agust, heima, ...June11/HBr 79040_80120-081211.pxp. Item no (5) –n e-mail from 071211 tackled, i.e.:. 5) HBr: Judging from our REMPI meeting the F(1 Delta) data all needs to be reanalysed: a) the shift curve is strange

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HBr, F1D2, v´=1 <-<- X spectrum agust,www,....June11/PPT-081211ak

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  1. HBr, F1D2, v´=1 <-<- X spectrum agust,www,....June11/PPT-081211ak.ppt agust, heima, ...June11/HBr 79040_80120-081211.pxp Item no (5) –n e-mail from 071211 tackled, i.e.: 5) HBr: Judging from our REMPI meeting the F(1 Delta) data all needs to be reanalysed: a) the shift curve is strange b) there is discrepancy between IR and BW data for the F state c) the V(v´=m+7), IR and BW are very strange, showing dip for J´=6 d) The BW vs J´ for H+ for V(v´=m+7) looks very different from that for Br+e) The absolute intensity shows irregulareties and seem to vilate the Boltzmann distribution All these points raise the question wheteher the J´ assignment for the F state is correct or not.

  2. Clear enhancements in Br+ and H+ signals

  3. Comments • As has been shown before (http://www.raunvis.hi.is/~agust/rempisvaedidir/JCP10811.pdf ) • observed shifts of peaks and shrinking of spacing between peaks for J´=5 and 6 fits with a • major interactions for J´= 6 and 5 (see also Helgi´s thesis fig 3-1, p: 13, https://notendur.hi.is/agust/rannsoknir/rempi/hbr/Jan11/Thesis-Helgi-jun11.pdf ; see next slide (page 4)). • The clear enhancement, both in Br+ and H+ signals observed for J´=6 fits with analogous observation for HCl (https://notendur.hi.is/agust/rannsoknir/papers/jcp129-164313-08.pdf ; • See fig. 2, p: 164313-4 ; see slide no. 5 below), suggesting, indeed that that peak is J´=6. • Irregularities in absolute signal intensities is understandable because of altering interaction • between the F and the V states. An enhanced HBr+ signal intensity for J´=6 (and J´=7) compared to that for J´=5 could be due to enhancement in HBr+ formation from the V state excitation side, which is believed to be different from that for HCl* (see: https://notendur.hi.is/agust/rannsoknir/papers/HBr/pccp8-2940-06.pdf ) • There is no reason to believe that the assignment above and in earlier work (http://www.raunvis.hi.is/~agust/rempisv) is incorrect. • On the other hand the DE vs J´plot must be WRONG! • * NB: This difference needs to be taken account of in the IR simulation assumption

  4. https://notendur.hi.is/agust/rannsoknir/papers/jcp129-164313-08.pdf:https://notendur.hi.is/agust/rannsoknir/papers/jcp129-164313-08.pdf: Analogous enhancements in Cl+ signals shown for HCl: Clear enhancements in Cl+ and H+ signals

  5. Comments • Based on slide 2 above the uncertainty in evaluating IR and BW vs. J´ must be very large and • BW in particular. I therefore do not think that the following plot is very relyable! Thi is consistant • With Longs argument in • https://notendur.hi.is/jil3/work/HBr/Analysis%20of%20F1%20delta2%20state%20for%20HBr.pdf

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