Electron correlations and pre-collision in the re-collision picture of high harmonic generation. (11th June 2018)

• Record Type: Journal Article
• Authors: Mašín, Zdeněk; Harvey, Alex G; Spanner, Michael; Patchkovskii, Serguei; Ivanov, Misha; Smirnova, Olga
• Is Part Of: Journal of physics. Volume 51:Number 13(2018:Jul. 01)
• Publication Date: 2018-06-11
• Subjects: high harmonic generation -- R-matrix -- photoionization -- electron correlation; Atoms -- Periodicals; Molecules -- Periodicals; Optics -- Periodicals; Nuclear physics -- Periodicals; 539.6
• DOI: 10.1088/1361-6455/aac598
• Languages: English
• ISSNs: 0953-4075

Abstract

Abstract: We discuss the seminal three-step model and the re-collision picture in the context of high harmonic generation in molecules. In particular, we stress the importance of multi-electron correlation during the first and the third of the three steps of the process: (1) the strong-field ionization and (3) the recombination. We point out how an accurate account of multi-electron correlations during the third recombination step allows one to gauge the importance of pre-collision: the term coined by Eberly (17 private communication) to describe unusual pathways during the first, ionization, step.