AMBIENTUM BIOETHICA BIOLOGIA CHEMIA DIGITALIA DRAMATICA EDUCATIO ARTIS GYMNAST. ENGINEERING EPHEMERIDES EUROPAEA GEOGRAPHIA GEOLOGIA HISTORIA HISTORIA ARTIUM INFORMATICA IURISPRUDENTIA MATHEMATICA MUSICA NEGOTIA OECONOMICA PHILOLOGIA PHILOSOPHIA PHYSICA POLITICA PSYCHOLOGIA-PAEDAGOGIA SOCIOLOGIA THEOLOGIA CATHOLICA THEOLOGIA CATHOLICA LATIN THEOLOGIA GR.-CATH. VARAD THEOLOGIA ORTHODOXA THEOLOGIA REF. TRANSYLVAN
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STUDIA PHYSICA - Ediţia nr.1-2 din 2020 | |||||||
Articol: |
TUNNELING IONIZATION STUDY OF LINEAR MOLECULES IN STRONG-FIELD LASER PULSES. Autori: V. PETROVIĆ, H. DELIBAŠIĆ, I. PETROVIĆ. |
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Rezumat: DOI: 10.24193/subbphys.2020.07 Published Online: 2020-12-30 Published Print: 2020-12-30 pp. 57-68 VIEW PDF FULL PDF ABSTRACT: We theoretically studied photoionization of atoms and molecules in the frame of Perelomov-Popov-Terent’ev (PPT) and Ammosov-Delone-Krainov (ADK) theories. Strong-field single ionization of two diatomic molecules, N and O2, are studied and compared to Ar and Xe atoms, using an 800 nm Ti:sapphire laser in the 3x1013 to 1x1015 Wcm-2 intensity range. To eliminate disagreement between theoretical and experimental findings in a low intensity fields (~6x1013 Wcm-2 we considered the influence of shifted ionization potential. Including these effects in the ionization rates, we numerically solved rate equations in order to determine an expression for the ionization yields. The use of modified ionization potential showed that the ionization yields will actually decrease below values predicted by original (uncorrected) formulas. This paper will discuss the causes of this discrepancy. Key words: tunneling ionization, ionization rate, ionization yield, molecules. |
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