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290708 HCl, f 3 D 2 <-<- X Agust, heima,..July08/II for f3D2-290708vhw.pxp Agust, heima,..July08/II for f3D2-290708vhwak.ppt Agust, heima,..July08/II for f3D2-290708vhwak.xls. 230708 / e-mail from ÁK:
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290708 HCl, f3D2 <-<- X Agust, heima,..July08/II for f3D2-290708vhw.pxp Agust, heima,..July08/II for f3D2-290708vhwak.ppt Agust, heima,..July08/II for f3D2-290708vhwak.xls
230708 / e-mail from ÁK: The ”Thorey´s-system” needs to be remeasured and checked in terms of reproducibility. Furthermore, it is very important to make sure that the measurements used to derive I(35Cl+)/I(H35Cl+) for that system are not saturated with respect to the I(H35Cl+) signal, which is much stronger than I(35Cl+). Below (slide 3) you see relevant figure and Thorey´s analysis. It could be that all the ratios which she derived from the experiments are too high because of saturation effects. Hence I suggest that you do new measurements and make sure that neither the 35Cl+ or H37Cl+ signals are saturated and derive I(35Cl+)/I(H37Cl+) to compare with the theory (instead of I(35Cl+)/I(H35Cl+)).
I(35Cl+)/I(H35Cl+) Thorey´s thesis p: 6 VHW(250708) J´ => It looks as if there is some saturation effect in Thorey´s data compared to the data by VHW
I(35Cl+)/I(H35Cl+) I(35Cl+)/I(H37Cl+) VHW 250708 J´
I(35Cl+)/I(H35Cl+) Thorey Thesis p: 6 Increasing Saturation(?) VHW(250708) VHW(280708) J´ => looks like some saturation effect in the 250708 data compared to the 280708 data for J´= 3-6 (?)
I(35Cl+)/I(H35Cl+) I(35Cl+)/I(H37Cl+) VHW J´ • Probably no saturation in J’ = 2-5; Possibly some saturation effect in 35Cl+/H35Cl+ for J´= 6-7 (judging from comparison of the two data)
Above data: NB!: expectation value is: 100 * I(H37Cl)/I(H35Cl) = 100*25/75 = 33.3 The data in column H37Cl+/H35Cl+ could mean that there are still some saturation effects in J´= 3-6 (??) since The ratio is found to be significantly less than 33.3 (i.e. 19.2-24.2). However there is slight relative shift of mass peaks for H35Cl+ and H37Cl+, hence the ratios might deviate from the expectation value. VHW will try to Evaluate relative intensity values by integration over excitation wavelengths as well as mass
VHW remeasured peak intensities: NB: since the Cl+ peak is very weak one needs to take great care in the integration procedure. After remeasuring the data from 280708, the following curve was obtained: I(35Cl+)/ I(H37Cl+) I(35Cl+)/ I(H35Cl+) J´
Above data: J´ 35Cl+ H35Cl+ H37Cl+ 35Cl+/H35Cl+ 35Cl+/H37Cl+ • 126 22915 7599 0.00549858 0.0165811 • 240 25096 5518 0.00956328 0.043494 • 233 15868 3014 0.0146836 0.0773059 • 177.5 61416 12662 0.00289013 0.0140183 • 36 108110 26201 0.000332994 0.00137399 • 157400 48839 0.000254129 0.000819017