1. HCl, V, v´=5: Effect of “Mass spectra integration” AK,PV-labt/C...HCl V(5,0)-130106vhwkm.pxp AK,PV-labt/C...HCl V(5,0)-130106vhwkm.ppt AK,PV-labt/C...HCl V(5,0)-130106vhwkm.xls

2. Mw0 (36.74 amu)

3. Mw1 (36.89 amu)

4. Mw2 (37.04 amu) / REMPI spectrum:

5. Mw3 (37.19 amu)

6. Mw0-3, i.e. average mass spectrum for Mw0 – Mw3:

7. Mw1-3

8. Mw=36.74 Mw=36.89 Mw=37.04 Mw=37.19 Average Mw (Mw03) i.e.: (I(36.74)+I(36.89)+I(37.04)+I(37.19))/4

9. => It is clearly an improvement to integrate, i.e. sum up mass spectra, (about 4 neighbour mass spectra in this case) Comparison of “averaged 37Cl+” and single 1H+ REMPI spectra:

10. Average REMPI For Mw -> 37Cl+ REMPI For Mw -> 1.007 / 37H+ J´=5

11. => It looks as if the relatively large intensity of the J´=5 peak is reproducable and consistent, thus for example, it appears for H+ as well as Cl+ Why is this?

12. Mw408-433, i.e. pnt = 408-433 i.e. Masses: 34.37-38.41 amu, i.e. Cl+ and HCl+ both isotopomers

13. All masses added together: i.e.pnts = 0 -500, corresponding to Mw =0.73- 49.78 amu ! Clearley USELESS!