Electron dynamics and molecular Coulomb explosion: critical radius vs dynamic screening - PowerPoint PPT Presentation

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Electron dynamics and molecular Coulomb explosion: critical radius vs dynamic screening PowerPoint Presentation
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Electron dynamics and molecular Coulomb explosion: critical radius vs dynamic screening
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Electron dynamics and molecular Coulomb explosion: critical radius vs dynamic screening

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  1. Electron dynamics and molecular Coulomb explosion: critical radius vs dynamic screening Kun Zhao, III Hill (University of Maryland) Session H4. Intense-Field Atomic Dynamics. Thursday afternoon, 13:30, Auditorium, JILA

  2. 3-Atom Coulomb Explosion TOF Analysis Inadequate

  3. Momentum Image Momentum 0 0 Momentum POLARIZATION AXIS Scale: 5 – 8 amu/div

  4. Momentum & Time-of-Flight Spectra • Time-Resolved Images • 128 x 128 Pixels • 730 Hz Digital Acquisition • 500,000 – 1,000,000 Frames • Mass-Resolved • Energies & Angular Distributions Time-Resolved Waveforms Digital Scope Acquisition Mass-Resolved Energies Distributions

  5. Ar+ Pump Mode Locked Ti:Sapphire Beam Diagnostics Nd:YLF Pump Timing Electronics Ti:Sapphire Regen 1 mJ, 800 nm, 100 fs @ 1 KHz Image Spectrometer Digital Scope Computer W/ Frame Grabber

  6. 0 1 (a) H+ 110 – 210 ns (b) H2+ 210 – 310 ns (c) N3+ 320 – 420 ns (d) N3+ , O3+ 370 – 470 ns (e) N2+ 420 – 520 ns (f) N2+ , O2+ 470 – 570 ns (g) O2+ 520 – 620 ns (h) 570 – 670 ns (i) N+ 620 – 720 ns (j) N+ 670 – 770 ns (k) O+ 720 – 820 ns (l) O+ 770 – 870 ns (m) OH+ 820 – 920 ns (n) N2+,3+ , O2+,3+ 320 – 620 ns (o) All Ions All Time

  7. REAL SPACE CORRELATION IMAGES AVERAGE IMAGE CORRELATION IMAGE 0 1 POLARIZATION AXIS SELECTIVE AVERAGE

  8. SELECTIVE AVERAGE 0 1 POLARIZATION AXIS AVERAGE IMAGE Correlation Imaging