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RISS 인기검색어
- 검색키워드
- 저자 : Xingqiang Lu (검색결과 2 건)
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Femtosecond Photoelectron Imaging of N<sub>2</sub> at 410 nm
Guo, Wei,Wei, Shanshan,Lu, Xingqiang,Wang, Li Korean Chemical Society 2010 Bulletin of the Korean Chemical Society Vol.31 No.12
We experimentally measure the kinetic energy and angular distributions of photoelectrons of $N_2$ as a function of 410 nm femtosecond laser intensity by using velocity map imaging technique. The strong-field multiphoton ionization of molecules shares many of the characteristics with those of atoms. Electron kinetic energies are nearly independent of laser intensities. The independence suggests that the electron peaks in the photoelectron spectrum actually result from a two-step process, indicative of the occurrence of real population in the intermediate states. The relative amplitudes of electron peaks indicate that in the two-step process, nonresonant population transfer dominates for low intensities, while resonant population transfer dominates for higher intensities.
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Femtosecond Photoelectron Imaging of N2 at 410 nm
Wei Guo,Shanshan Wei,Xingqiang Lu,Li Wang 대한화학회 2010 Bulletin of the Korean Chemical Society Vol.31 No.12
We experimentally measure the kinetic energy and angular distributions of photoelectrons of N2 as a function of 410 nm femtosecond laser intensity by using velocity map imaging technique. The strong-field multiphoton ionization of molecules shares many of the characteristics with those of atoms. Electron kinetic energies are nearly independent of laser intensities. The independence suggests that the electron peaks in the photoelectron spectrum actually result from a twostep process, indicative of the occurrence of real population in the intermediate states. The relative amplitudes of electron peaks indicate that in the two-step process, nonresonant population transfer dominates for low intensities, while resonant population transfer dominates for higher intensities.
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