Alignment dependent enhancement of the photoelectron cutoff for multiphoton ionization of molecules

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DOIResolve DOI: http://doi.org/10.1103/PhysRevLett.112.253001
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TypeArticle
Journal titlePhysical Review Letters
ISSN0031-9007
Volume112
Issue25
Article number253001
SubjectAlignment; Molecules; Photoelectrons; Photons; Angle-dependent; Cutoff energies; Ionization rates; Laser polarization; Multiphoton ionization; Photoelectron angular distributions; Photoelectron spectrum; Tunneling models; Photoionization
AbstractThe multiphoton ionization rate of molecules depends on the alignment of the molecular axis with respect to the ionizing laser polarization. By studying molecular frame photoelectron angular distributions from N2, O2, and benzene, we illustrate how the angle-dependent ionization rate affects the photoelectron cutoff energy. We find alignment can enhance the high energy cutoff of the photoelectron spectrum when probing along a nodal plane or when ionization is otherwise suppressed. This is supported by calculations using a tunneling model with a single ion state. © 2014 American Physical Society.
Publication date
LanguageEnglish
AffiliationSecurity and Disruptive Technologies; National Research Council Canada
Peer reviewedYes
NPARC number21276246
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Record identifierd91aae88-2da3-4113-9d85-0724d0db3b34
Record created2015-09-28
Record modified2016-05-09
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