DICP OpenIR
Subject Area物理化学
Femtosecond Multiphoton Ionization of Pyrrole
Liu, Benkang1,2; Wang, Yanqiu1; Wang, Li1; Wang L(王利)
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY A
2012-01-12
DOI10.1021/jp209211s
Volume116Issue:1Pages:111-118
Indexed BySCI
SubtypeArticle
Department11
Funding Project1101
Contribution Rank1,1
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Physical ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Physics
WOS KeywordPHOTOFRAGMENT TRANSLATIONAL SPECTROSCOPY ; NEAR-ULTRAVIOLET PHOTOLYSIS ; PI-PHOTOELECTRON BANDS ; ELECTRONIC-SPECTRUM ; FURAN ; THIOPHENE ; ABSORPTION ; TRANSITIONS ; MOLECULES ; STATES
AbstractThe photoionization dynamics of pyrrole are investigated by using a photoelectron imaging method and a tunable femtosecond laser. Two photon nonresonant ionization experiments in the wavelength range from 261 to 298 nm indicate that the cation and neutral ground states have similar structures. The main vibrational excitation in the cation ground state is the nu(8) mode. Two-photon absorption at 406 rim projects neutral pyrrole into a mixed state comprising the 1B(2) valence and 3p Rydberg states. Ionization from this mixed state mainly results in the overtone excitation of vibrational mode nu(8) and nu(9) of the cation state. In the wavelength range from 336 to 364 rim, a mixed state comprising the 3d/4s Rydberg and the 4A(1) Valence, states are populated by the absorption of two photons through vibronic coupling. The partition ratio among these states varies with the excitation wavelength, resulting in dramatic changes in both kinetic energy distributions and angular distributions. AS the laser. wavelength becomes shorter, from 336 to 314 nm, higher excited states, 3B(2), 5A(1), 6A(1), 7B(1) and 4B(2), can be populated. Photoelectron angular distributions provide supplementary verification of assignments. Our experiments indicate that femtosecond multiphoton. ionization and photoelectron imaging methods are powerful tools for investigating short-lived intermediated excited states, which cannot be detected in nanosecond experiments.
Language英语
WOS IDWOS:000298978000013
Citation statistics
Cited Times:8[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/118401
Collection中国科学院大连化学物理研究所
Corresponding AuthorWang L(王利)
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Liu, Benkang,Wang, Yanqiu,Wang, Li,et al. Femtosecond Multiphoton Ionization of Pyrrole[J]. JOURNAL OF PHYSICAL CHEMISTRY A,2012,116(1):111-118.
APA Liu, Benkang,Wang, Yanqiu,Wang, Li,&王利.(2012).Femtosecond Multiphoton Ionization of Pyrrole.JOURNAL OF PHYSICAL CHEMISTRY A,116(1),111-118.
MLA Liu, Benkang,et al."Femtosecond Multiphoton Ionization of Pyrrole".JOURNAL OF PHYSICAL CHEMISTRY A 116.1(2012):111-118.
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