| 纳秒强激光电离苯产生高价碳离子的波长效应 |
| |
| 作者单位： | 中国科学院安徽光学精密机械研究所,合肥,230031;中国科学院研究生院,北京,100039;中国科学院安徽光学精密机械研究所,合肥,230031;中国科学院大连化学物理研究所,大连,116023 |
| |
| 基金项目： | 国家高技术研究发展计划（863计划） |
| |
| 摘 要： |
|
| 关 键 词： | 苯 库仑爆炸 高价原子离子 飞行时间质谱 |
Wavelength Dependence of Production of Multicharged Carbon Ions in Nanosecond Intense Laser Ionization of Seeded Benzene Beam |
| |
| Niu Dongmei,Liang Feng,Luo Xiaolin,Wen Lihua,Zhang Xixian,Li Haiyang. Wavelength Dependence of Production of Multicharged Carbon Ions in Nanosecond Intense Laser Ionization of Seeded Benzene Beam[J]. Chinese Journal of Chemical Physics, 2004, 17(4): 375-377. DOI: 10.1088/1674-0068/17/4/375-377 |
| |
| Authors: | Niu Dongmei Liang Feng Luo Xiaolin Wen Lihua Zhang Xixian Li Haiyang |
| |
| Affiliation: | {{each article.affiliations aff i}} {{if aff.addressEn && aff.addressEn != ""}} {{if aff.label && aff.label != "" && article.affiliations.length != 1}}{{@ aff.label}}.{{/if}}{{@ aff.addressEn}}{{/if}} {{/each}} |
| |
| Abstract: | The photoionization of seeded benzene beam by 25 ns laser pulse at wavelengths of 266，355 and 1064 nm has been studied by the time-of-flight mass spectrometry. The observed mass spectra at 266 nm and 355 nm at intensities of 1010-1011 W/cm2 indicate a multiphoton ionization and dissociation（MPID）process，in which C+，C2Hx+，C3Hx+，C4Hx+ and C6H6+ are main products. While at 1064 nm laser of similar intensities，the domain ion is C4+ which is produced from Coulomb explosion. The longer wavelength facilities the energy absorption rate during inverse bremsstrahlung，which leads to the resulting wavelength dependence of the multicharged atomic ions. |
| |
| Keywords: | Benzene，Coulomb explosion，Multicharged atomic ions，Time of flight mass spectrometry |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《化学物理学报(中文版)》浏览原始摘要信息 |
|
点击此处可从《化学物理学报(中文版)》下载全文 |
