Investigation of photon emission spectra of hydrogen using intense subpicosecond Ti:sapphire/Nd:glass laser pulses
| Autor: | See Leang Chin, Y. Beaudoin, André D. Bandrauk, H Yu, S. Augst, Y Liang, Mohamed Chaker |
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| Rok vydání: | 1995 |
| Předmět: |
Physics
Hydrogen chemistry.chemical_element Condensed Matter Physics Atomic and Molecular Physics and Optics Spectral line Dissociation (chemistry) Glass laser chemistry Ionization Harmonics Physics::Atomic and Molecular Clusters Sapphire Physics::Atomic Physics Physics::Chemical Physics Atomic physics Excitation |
| Zdroj: | Journal of Physics B: Atomic, Molecular and Optical Physics. 28:3661-3674 |
| ISSN: | 1361-6455 0953-4075 |
| DOI: | 10.1088/0953-4075/28/16/017 |
| Popis: | High-harmonic generation processes have been experimentally investigated in molecular hydrogen gas as both molecular dissociation and ionization occur in the gas. The high harmonics observed in our experiment can be mainly attributed to neutral hydrogen molecules. Besides the harmonic spectra, two strong Lyman lines from the dissociated hydrogen atoms and the emission from the neutral hydrogen molecules are observed. Several possible excitation and dissociation channels of hydrogen molecules are proposed. It is found that resonance effects are important for both high-harmonic generation and molecular dissociation. Theoretical calculations using the time-dependent Hartree-Fock (TDHF) method for H2 reproduce some of the resonance effects. |
| Databáze: | OpenAIRE |
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