| Title | Mass spectra of ethylene in intense laser fields |
| Authors | Liang, Qingqing Wu, Chengyin Wu, Zhifeng Liu, Min Deng, Yongkai Gong, Qihuang |
| Affiliation | Peking Univ, State Key Lab Mesoscop Phys, Beijing 100871, Peoples R China. Peking Univ, Dept Phys, Beijing 100871, Peoples R China. |
| Keywords | Ionization Dissociation Ethylene Femtosecond laser FEMTOSECOND LASER MULTIPHOTON IONIZATION MOLECULAR IONIZATION POLYATOMIC-MOLECULES PULSES FRAGMENTATION ALIGNMENT NITROGEN OXYGEN C2H4 |
| Issue Date | 2009 |
| Publisher | 化学物理学杂志 |
| Citation | CHEMICAL PHYSICS.2009,360,(1-3),13-17. |
| Abstract | We experimentally studied the pulse duration effects on the mass spectra of ethylene in intense laser fields. At an intensity of 1.3 x 10(14) W/cm(2), parent ions C(2)H(4)(+) are dominant for both 6.4 fs and 110 fs laser pulses. However, strong H(+) ion signal is observed only in the 110 fs laser pulse. It is absent in the 6.4 fs laser pulse. When the laser intensity is 6.2 x 10(14) W/cm(2), singly and doubly charged parent ions are observed for both 6.4 fs and 110 fs laser pulses. In addition. some highly charged carbon ions are present for 110 fs laser pulses. However, these highly charged carbon ions are replaced by some other singly and doubly charged fragmental ions for 6.4 fs laser pulses. The above different mass spectra for ethylene are explained by the nuclear motion assisted by the strong laser fields with different pulse durations. (C) 2009 Elsevier B.V. All rights reserved. |
| URI | http://hdl.handle.net/20.500.11897/247152 |
| ISSN | 0301-0104 |
| DOI | 10.1016/j.chemphys.2009.04.002 |
| Indexed | SCI(E) |
| Appears in Collections: | 人工微结构和介观物理国家重点实验室 |
