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题名: CS2 decay dynamics investigated by two-color femtosecond laser pulses
作者: Liu, HP;  Zhang, JY;  Yin, SH;  Wang, L;  Lou, NQ
刊名: PHYSICAL REVIEW A
发表日期: 2004-10-01
DOI: 10.1103/PhysRevA.70.042501
卷: 70, 期:4
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Optics ;  Physics, Atomic, Molecular & Chemical
研究领域[WOS]: Optics ;  Physics
英文摘要: The Rydberg-state decay dynamics of carbon disulfide (CS2) has been investigated by (2+1') resonance-enhanced multiphoton ionization with the pump-probe technique (pump wavelength 266 nm and probe wavelength 400 nm) on our homebuilt femtosecond laser system. The CS2 is pumped into Rydberg state 6ssigma(g) by two 266-nm photons, corresponding to the excitation energy 9.4 eV, and then ionized by temporally delayed 400-nm pulse. The CS2 ion yield dependence on the time delay determines the excited-state lifetime to be 409 +/- 6 fS for (CSS)-S-32-S-32 and 441 +/- 7 fs for (CSS)-S-32-S-34, respectively, at 265 nm pump and the isotopically averaged lifetime 1034 +/- 31 fs at 267.5 nm pump. The wavelength dependence of the lifetime may be due to the effect of electron spin on the potential energy surface-namely, separately subjected to two different mechanisms: internal conversion and intersystem crossing interaction.
关键词[WOS]: MULTIPHOTON IONIZATION SPECTROSCOPY ;  PHOTOFRAGMENT TRANSLATIONAL SPECTROSCOPY ;  ROTATIONALLY RESOLVED SPECTRA ;  JET-COOLED CS2 ;  CARBON-DISULFIDE ;  210 NM ;  STATE ;  PHOTODISSOCIATION ;  PREDISSOCIATION ;  CM(-1)
语种: 英语
WOS记录号: WOS:000225322500037
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/139296
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Wuhan Inst Phys & Math, State Key Lab Magnet Resonance & Atom & Mol Phys, Wuhan 430071, Peoples R China

Recommended Citation:
Liu, HP,Zhang, JY,Yin, SH,et al. CS2 decay dynamics investigated by two-color femtosecond laser pulses[J]. PHYSICAL REVIEW A,2004,70(4).
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