CH3Br, 201009 (2+n)REMPI spectra assignments for region 66000 – 70000 cm-1 agust, heima,...Sept09/CH3Br-Overall-021009km-201009ak.pxp agust,www,...Sept09/PPT-201009ak.ppt

Causley and Russel, JCP, 62(3), p:848, (1975): See next slide

Causley and Russel, JCP, 62(3), p:848, (1975): cm-1

67273 66502 68877.6 66020 68661 nm agust, heima,...Sept09/CH3Br-Overall-021009km-201009ak.pxp

nm

http://webbook.nist.gov/cgi/cbook.cgi?ID=C74839&Units=SI&Mask=800:

[3/2]5p;0, ni <-<- Ground state; i = 3,2,1 – transitions, Causley & Russel / cm-1 Ours / cm-1 Ours-Causley´s / cm-1 transition Vibr. Wave- numbers [3/2]5p;0 numbers ground state 66004 66020 16 Y(origin) 66482 66502 20 Y + n3´ n3´= 482 n3´´= 611 67246 67273 27 Y + n2´ n2´= 1253 n2´´= 1306 68846 68877.6 31.6 Y + n1´ n1´= 2857.6 n1´´= 2935 68659 68661 2 Y’ (origin) i.e. The bands 66502,67273 and 68877.6 cm-1 are [3/2]5p;0, ni <-<- Ground state; i = 3,2,1 – transitions, i.e. Correspond to transition to vibrationally excited states

1/2 : 3/2 : 68877.6 (1,0,0,...) 68661 (0,0,0,...) (1/2)5p;0 67273 (0,1,0,...) CH3Br* 66502 (0,0,1,...) 66020 (0,0,0,...) (3/2)5p;0 Y´ (v1´,v2´,v3´,...) Y (v1´´,v2´´,v3´´,...)= (0,0,0,...) CH3Br

Prediktions for Y´+ ni´; i = 1,2,3 spectra: Causley & Russel / cm-1 Ours / cm-1 Ours-Causley´s / cm-1 transition Vibr. Wave- numbers [3/2]5p;0 numbers [1/2]5p;0 66004 66020 16 Y(origin) 66482 66502 20 Y + n3´ n3´= 482 Y’ + n3´´= 69143 67246 67273 27 Y + n2´ n2´= 1253 Y’ + n2´´= 69914 68846 68877.6 31.6 Y + n1´ n1´= 2857.6 Y’ + n1´´= 71518.6 68659 68661 2 Y’ (origin)