Citation: Zhang Gui-Qiu, Sha Guo-He, Xu Ji-Jun, Knott W.Proch D. Abnormal Pressure Effects of H2 Three-photon Resonant Enhanced Ionization Spectroscopy[J]. Acta Physico-Chimica Sinica, 1997, 13(07): 617-620. doi: 10.3866/PKU.WHXB19970708
H2三光子共振增强电离光谱中的反常压力效应
English
Abnormal Pressure Effects of H2 Three-photon Resonant Enhanced Ionization Spectroscopy
The three-photon resonant ionization spectroscopy of H2 B1∑u+-X1∑g+ (12,0) and C1Ⅱu-X1∑g+ (2,0) exhibits abnormal pressure effects. Some of them are observed for the first time. Pressure-induced abnormal line shift, line broadening, line splitting and spectral intensity variations can be well explained by a mechanism of reabsorption of the third harmonic generation in the medium. Approximate expressions considering the phase matching requirement yield lineshifts, -splitting and -intensities at different pressures in od agreement with the experimental results. Two similar spectra are detected by two tandem electrode pairs in a gas celll which give experimental evidence for THG reabsorption mechanism. The failure to obtain ion signal from circularly polarized light also supports the above mechanism.
扫一扫看文章
计量
- PDF下载量: 2085
- 文章访问数: 3524
- HTML全文浏览量: 58
下载:
