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题名: Multiple ionization of diethyl ether cluster by nanosecond laser: generation of multiply charged ions and the electron energy distribution
作者: Zhang Na-Zhen1, 2;  Cang Huai-Wen1;  Wang Wei-Guo1;  Miao Shu-Yi1;  Jin Feng1, 2;  Wu Qing-Hao1, 2;  Hua Lei1, 2;  Li Hai-Yang1
关键词: multiply charged ions ;  electron energy ;  nanosecond laser ;  diethyl ether cluster
刊名: ACTA PHYSICA SINICA
发表日期: 2009-07-01
卷: 58, 期:7, 页:4556-4562
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Physics, Multidisciplinary
研究领域[WOS]: Physics
英文摘要: The interaction of diethyl ether clusters and laser was studied at laser intensity of 10(11) W/cm(2) using 5 its, 1064 nm laser pulses. Multiply charged ions O(6+) and C(4+) were observed and the ratio of O(6+)/C(4+) nearly kept constant in the range of laser intensity studied. The energy distribution of electrons ejected was measured via retarding potential method. At the laser intensity of 4.0 x 10(11) W/cm(2), the mean electron energy of 56 eV and the maximum electron energy of 102 eV were observed. It indicates that the multiply charged ions are mainly produced from energetic electron impact ionization. In addition, our calculated results show that the screening effect inside cluster can significantly decrease the ionization potentials of multiply charged ions, thus facilitating the ionization especially at low laser intensity. The above results further support our three stage model of "multiphoton ionization ignition-inverse bremsstrahlung heating-electron impact ionization".
关键词[WOS]: COULOMB EXPLOSION ;  WAVELENGTH DEPENDENCE ;  MULTICHARGED IONS ;  METHYL-IODIDE ;  INTENSE ;  METHANOL ;  FIELD ;  BEAM ;  DISSOCIATION ;  BENZENE
语种: 英语
WOS记录号: WOS:000268263700028
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141383
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, Grad Sch, Beijing 100049, Peoples R China

Recommended Citation:
Zhang Na-Zhen,Cang Huai-Wen,Wang Wei-Guo,et al. Multiple ionization of diethyl ether cluster by nanosecond laser: generation of multiply charged ions and the electron energy distribution[J]. ACTA PHYSICA SINICA,2009,58(7):4556-4562.
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