First Benchmark of Relativistic Photoionization Theories against 3D ab initio Simulation

Photoelectron spectra and ionization rates encompassing relativistic intensities and hydrogenlike ions with relativistic binding energies are obtained using a quasiclassical S-matrix approach. These results, along with those based on the imaginary time method, are compared with three-dimensional, ½-...

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Bibliographic Details
Published in:Physical review letters 2017-03, Vol.118 (13), p.133201-133201, Article 133201
Main Authors: Hafizi, B, Gordon, D F, Palastro, J P
Format: Article
Language:English
Subjects:
Amplitudes
Benchmarking
Electric fields
Ionization
Ionization potentials
Simulation
Spectra
Time dependence
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Summary:Photoelectron spectra and ionization rates encompassing relativistic intensities and hydrogenlike ions with relativistic binding energies are obtained using a quasiclassical S-matrix approach. These results, along with those based on the imaginary time method, are compared with three-dimensional, ½-period ab initio simulations for a wide range of ionization potentials and electric field amplitudes. Significant differences between the three results are demonstrated. Time-dependent simulations indicate that the peak ionization current can occur before the peak of the electric field.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.118.133201