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I 2 fs REMPI 1) Energetics / excitation calculations....slide 2 2) Absorption spectrum slides 3-6 3)REMPI spectrum slide 7 4)(2B+2R)fs-REMPI scheme slide 8 5)Effect of laser pulse bandwidth slides https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I ak.pxp https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-fs-REMPI ak.ppthttps://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-fs-REMPI ak.ppt

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https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls B = Blue R = red I2I2 IE=9.3074eV exc.B(2) R(2) IE-exc cm-1 nm cm photonsE/cm Dalby (v´,0) lines: BB 1hv/cm-12hv 0, , ,

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Slide 5 Slide 6 In Slide 9

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https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I ak.pxp 1hv absorption cross section / nm cm -1

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2hv = …………………………………… cm -1 https://notendur.hi.is/agust/rannsoknir/papers/jms pdf One- color I 2 REMPI 1hv The Dalby system

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I 2 Rel. Absorption 1980 & See next Slide : Visible absorption I e cm -1 Dalby System: I 2 ** <-<- I 2 +2hv for (v´,v´´=0) transitions (v´=0 – 6): cm-1 https://notendur.hi.is/agust/rannsoknir/papers/jms pdf (v´=1,v´´=0) E/cm -1 2B 2 x nm 2R / 2 x nm https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I ak.pxp (2B + 2R) fs- REMPI of I 2

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I2 Abs. shown in slide 8:

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2hv = …………………………………… cm -1 https://notendur.hi.is/agust/rannsoknir/papers/jms pdf One- color I 2 REMPI 1hv The Dalby system 7 nm Bandwidth For 1hv(?) https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls

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NB!: Assuming about 7 nm bandwidth for the fs pulse (Is that correct???) The Dalby system could be split into two – three regions (see slide above) to see effect of changing vibrational energies on lifetimes. Moving to other electronic systems (higher in energy; possibly lower in energy(?)) will allow comparison of electronic states (and vibrational energies) in terms of lifetimes. https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls

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