Weak-field asymptotic theory of tunneling ionization: benchmark analytical results for two-electron atoms

The recently developed many-electron weak-field asymptotic theory of tunneling ionization of atoms and molecules in an external static electric field (Tolstikhin et al 2014, Phys. Rev. A 89, 013421) is extended to the first-order terms in the asymptotic expansion in field. To highlight the results,...

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Published inJournal of physics. B, Atomic, molecular, and optical physics Vol. 48; no. 6; pp. 61003 - 5
Main Authors Trinh, Vinh H, Tolstikhin, Oleg I, Morishita, Toru
Format Journal Article
LanguageEnglish
Published IOP Publishing 28.03.2015
Subjects
Asymptotic expansions
Asymptotic properties
Benchmarking
Electric fields
Ionization
many-electron effects
Mathematical analysis
Nuclear power generation
Tunneling
tunneling ionization
weak field asymptotic theory
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Summary:The recently developed many-electron weak-field asymptotic theory of tunneling ionization of atoms and molecules in an external static electric field (Tolstikhin et al 2014, Phys. Rev. A 89, 013421) is extended to the first-order terms in the asymptotic expansion in field. To highlight the results, here we present a simple analytical formula giving the rate of tunneling ionization of two-electron atoms H− and He. Comparison with fully-correlated ab initio calculations available for these systems shows that the first-order theory works quantitatively in a wide range of fields up to the onset of over-the-barrier ionization and hence is expected to find numerous applications in strong-field physics.
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ISSN:0953-4075
1361-6455
DOI:10.1088/0953-4075/48/6/061003