Ionization of ethane, butane, and octane in strong laser fields

被引:9
作者
Palaniyappan, Sasi [1 ]
Mitchell, Rob [1 ]
Ekanayake, N. [1 ]
Watts, A. M. [1 ]
White, S. L. [1 ]
Sauer, Rob [1 ]
Howard, L. E. [1 ]
Videtto, M. [1 ]
Mancuso, C. [1 ]
Wells, S. J. [1 ]
Stanev, T. [1 ]
Wen, B. L. [1 ]
Decamp, M. F. [1 ]
Walker, B. C. [1 ]
机构
[1] Univ Delaware, Dept Phys & Astron, Newark, DE 19716 USA
来源
PHYSICAL REVIEW A | 2010年 / 82卷 / 04期
基金
美国国家科学基金会;
关键词
COULOMB EXPLOSION; DISSOCIATIVE IONIZATION; NUCLEAR-FUSION; MOLECULES; ALIGNMENT; DYNAMICS; METHANE; DRIVEN; PICOSECOND; ALCOHOLS;
D O I
10.1103/PhysRevA.82.043433
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Strong-field photoionization of ethane, butane, and octane are reported at intensities from 10(14) to 10(17) W/cm(2). The molecular fragment ions, C+ and C2+, are created in an intensity window from 10(14) to 10(15) W/cm(2) and have intensity-dependent yields similar to the molecular fragments CmHn+ and CmHn2+. In the case of C+, the yield is independent of the molecular parent chain length. The ionization of more tightly bound valence electrons in carbon (C3+ and C4+) has at least two contributing mechanisms, one influenced by the parent molecule size and one resulting from the tunneling ionization of the carbon ion.
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页数:8
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