Femtosecond Multiphoton Ionization of Pyrrole
文献类型：期刊论文
| 作者 | Liu, Benkang1,2; Wang, Yanqiu1; Wang, Li1 |
| 刊名 | journal of physical chemistry a
 |
| 出版日期 | 2012-01-12 |
| 卷号 | 116期号:1页码:111-118 |
| 产权排序 | 1,1 |
| 通讯作者 | 王利 |
| 英文摘要 | the 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. |
| WOS标题词 | science & technology ; physical sciences |
| 学科主题 | 物理化学 |
| 类目[WOS] | chemistry, physical ; physics, atomic, molecular & chemical |
| 研究领域[WOS] | chemistry ; physics |
| 关键词[WOS] | photofragment translational spectroscopy ; near-ultraviolet photolysis ; pi-photoelectron bands ; electronic-spectrum ; furan ; thiophene ; absorption ; transitions ; molecules ; states |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000298978000013 |
| 公开日期 | 2013-10-11 |
| 源URL | [http://159.226.238.44/handle/321008/118401]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.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 |
| 推荐引用方式 GB/T 7714 | Liu, Benkang,Wang, Yanqiu,Wang, Li. Femtosecond Multiphoton Ionization of Pyrrole[J]. journal of physical chemistry a,2012,116(1):111-118. |
| APA | Liu, Benkang,Wang, Yanqiu,&Wang, Li.(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. |
入库方式： OAI收割
来源：大连化学物理研究所
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