Energy and angular distributions of electrons from sodium atoms photo-ionized with femtosecond laser pulses

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dc.authorid0000-0001-9461-7623en_US
dc.authorscopusid15839693900en_US
dc.authorwosidA-4334-2018en_US
dc.contributor.authorBoran, Y.
dc.contributor.authorHart, N.
dc.contributor.authorKaya, Necati
dc.contributor.authorZhou, J.
dc.contributor.authorKolomenskii, A. A.
dc.contributor.authorSchuessler, H. A.
dc.date.accessioned2023-05-16T06:14:17Z
dc.date.available2023-05-16T06:14:17Z
dc.date.issued2021en_US
dc.departmentFakülteler, Mühendislik Fakültesi, Malzeme Bilimi ve Mühendisliği Bölümü
dc.description.abstractWe studied photoelectron angular distributions (PADs) and energy spectra of sodium atoms photo-ionized with intense short laser pulses in the near-infrared region. Energy spectra of photoelectrons due to multistep ionization of sodium atoms through intermediate levels 5p, 6p, 7p, and 4f were observed in above threshold ionization (ATI) at laser intensities of 2 × 1013 W cm−2 and 1 × 1013 W cm−2. The PADs from the 5p(4f) state for zero, first, second and third order ATI peaks were measured. We observed that for the two selected laser intensities the angular distribution of photoelectrons showed only slight variations. The PADs exhibit main lobes within ∼60◦ degrees from the laser polarization and additional lobes that become more pronounced with the increasing ATI peak number. Besides a general analytical representation of the observed angular dependences, the experimental PADs for each ATI peak were fitted with Legendre polynomials accounting for different ionization channels. The good agreement between the experimental data and fitting functions allowed to evaluate the contributions of the ionization channels to the observed ATI orders. The calculations of the photoelectron spectra by numerically solving the time-dependent Schrödinger equation in a single active electron approximation produced agreement with the experiment in the main features of the spectra, while differences in more subtle details were observed.en_US
dc.identifier.citationBoran, Y., Hart, N., Kaya, N., Zhou, J., Kolomenskii, A. A., & Schuessler, H. A. (2021). Energy and angular distributions of electrons from sodium atoms photo-ionized with femtosecond laser pulses. Journal of Physics B: Atomic, Molecular and Optical Physics, 54(14) doi:10.1088/1361-6455/ac0c29en_US
dc.identifier.doi10.1088/1361-6455/ac0c29
dc.identifier.issn0953-4075
dc.identifier.issn1361-6455
dc.identifier.issue14en_US
dc.identifier.scopus2-s2.0-85113711386
dc.identifier.urihttps://doi.org/10.1088/1361-6455/ac0c29
dc.identifier.urihttps://hdl.handle.net/20.500.12428/4153
dc.identifier.volume54en_US
dc.identifier.wosWOS:000681459800001
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorKaya, Necati
dc.language.isoen
dc.publisherIOP Publishing Ltden_US
dc.relation.ispartofJournal of Physics B: Atomic, Molecular and Optical Physicsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectAbove threshold ionizationen_US
dc.subjectAngular distributionsen_US
dc.subjectPhotoelectronen_US
dc.titleEnergy and angular distributions of electrons from sodium atoms photo-ionized with femtosecond laser pulses
dc.typeArticle

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