1. HCl, E(v´=2) agust,www,…..hcl/June11/PPT-281211ak.ppt agust,heima,…HCl/June11/HCl E2 spectra-271211jl.pxp agust,heima,…HCl/June11/HCl E2 spectra-271211jlaka.pxp agust,heima,….HCl/June11/XLS-281211ak.xls From Long: https://notendur.hi.is/jil3/work/HCl/E2%20assignment.pdf

2. E or g system: 9 peaks due to H 35 Cl; 5 peaks due to H 37 Cl From Long: https://notendur.hi.is/jil3/work/HCl/E2%20assignment.pdf Is this a peak due to the E state?

3. NB: The clear isotope shift for E or g) suggest that the state is very perturbed, most propably a 1  + state (E (or V(?))). Based on slide 2 it looks as if the isotope splitting is independent of peaks (see more details below). Comparison of the isotope splitting with that observed for other states (E,v´= 0 and 1) is shown below. The predictions 0 = 88166.7 cm -1 and 88176.9 cm -1 are abnormally high: That would require energy spacing between v´= 1 and 2 to be bigger (ca 2250 cm -1 ) than the spacing between v´= 0 and 1 ! (2140 cm -1 ). If the spacing between v´=1 and 2 is analogous to that between v´= 0 and 1 0 would be about 88060 cm-1 (agust,heima,….HCl/June11/XLS-281211ak.xls) => We need to see the spectral structure at lower wavenumbers.

4. E or g system: 9 peaks due to H35Cl; agust,heima,…HCl/June11/HCl E2 spectra-271211jlaka.pxp; Lay:0; Gr:0

5. E or g system: 9 peaks due to H35Cl; agust,heima,…HCl/June11/HCl E2 spectra-271211jlaka.pxp; Lay:0; Gr:0

6. E or g system: 9 peaks due to H35Cl; 5 peaks show high Cl+/HCl+ ratios (>1); 4 peaks show low(er) Cl+/HCl+ ratios (<1) 35Cl+/H35Cl+: >1 >1(?) 1 1 >1 agust,heima,…HCl/June11/HCl E2 spectra-271211jlaka.pxp; Lay:0; Gr:0

7. No significant Cl + signals seem to appear for the “i 3  1 -state” as to be expected since it is a “pure” (nonmixed) Rydberg state whereas for the other(s) state(s) significant Cl + signals are seen. The “other(s) state(s) (E or g) could be just one state. Differing Cl + /HCl + ratios could a)-Indicate different ratios for different J´ (NB!: E(v´=2) is closer to V,v´=18 than V,v´=19 (http://www.raunvis.hi.is/~agust/rempisvaedidir/JCP10811.pdf )http://www.raunvis.hi.is/~agust/rempisvaedidir/JCP10811.pdf suggesting that “IR” will lower with J´ analogous to that found for E,v´=1, b) -different series (O.Q,S) and /or c) -J´ dependent mixing with the V state. It is difficult to perform sensible assignments but it is worth trying to evaluate intensity ratios (“IR” = Cl + /HCl + ) to compare with those for E, v´=0 and 1 (https://notendur.hi.is/jil3/work/HCl/E%20and%20V%20states%20for%20HCl.pdf )https://notendur.hi.is/jil3/work/HCl/E%20and%20V%20states%20for%20HCl.pdf Which show “IR” : 0.4 < IR < 0.7 for v´=0 0.3 < IR < 1.3 for v´=1

8. According to our data (see below) Cl isotope shifts range between 4 and 5.2 cm -1. NB!: isotope shifts are J´ dependent. This strongly suggests that this spectrum is due to the E(v´=2) state http://www.hi.is/~agust/rannsoknir/papers/green1.pdfhttp://www.hi.is/~agust/rannsoknir/papers/green1.pdf:

9. E or g system: 9 peaks due to H 35 Cl; 5 peaks due to H 37 Cl 5.2 cm -1 4.4 cm -1 5.2 cm -1 4 cm -1

10. Can we learn something from the E(v´=0 an 1) specta shapes and assignments Which could assist us with assigning the E(v´=2) spectrum?