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I 2 fs REMPI 1) Energetics / excitation calculations....slide 2

I 2 fs REMPI 1) Energetics / excitation calculations....slide 2 2) Absorption spectrum.........................slides 3-6 REMPI spectrum................................slide 7 (2B+2R)fs-REMPI scheme...................slide 8 Effect of laser pulse bandwidth..........slides 10-11

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I 2 fs REMPI 1) Energetics / excitation calculations....slide 2

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  1. I2 fs REMPI • 1) Energetics / excitation calculations....slide 2 • 2) Absorption spectrum.........................slides 3-6 • REMPI spectrum................................slide 7 • (2B+2R)fs-REMPI scheme...................slide 8 • Effect of laser pulse bandwidth..........slides 10-11 • https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-100312ak.pxp • https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xlshttps://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-fs-REMPI-100312ak.ppt

  2. B = Blue R = red https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls

  3. Slide 5 In Slide 9 Slide 6

  4. 1hv absorption cross section l / nm 50000 cm-1 https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-100312ak.pxp

  5. One- color I2 REMPI 2hv = 53570.74 …………………………………… 54995.38 cm-1 The Dalby system 1hv https://notendur.hi.is/agust/rannsoknir/papers/jms163-541-94.pdf

  6. E/cm-1 80718.48 (2B + 2R) fs- REMPI of I2 I2+ + e- 75069.21cm-1 2R / 2 x 743.3 nm 67265.4 53812.32 (v´=1,v´´=0) I2 Rel. Absorption 1980 & See next Slide : : Visible absorption s Dalby System: I2** <-<- I2 +2hv for (v´,v´´=0) transitions (v´=0 – 6): 53570.74 - 54995.38 cm-1 https://notendur.hi.is/agust/rannsoknir/papers/jms163-541-94.pdf 2B 2 x 371.7 nm 26906.16 https://notendur.hi.is/agust/rannsoknir/Bergen/2012/I2-100312ak.pxp

  7. I2 Abs. shown in slide 8:

  8. One- color I2 REMPI 2hv = 53570.74 …………………………………… 54995.38 cm-1 The Dalby system 1hv 7 nm Bandwidth For 1hv(?) https://notendur.hi.is/agust/rannsoknir/Bergen/2012/CH3I&I2-limits.xls https://notendur.hi.is/agust/rannsoknir/papers/jms163-541-94.pdf

  9. 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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