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arXiv · 2406.09306

Single-photon and multi-photon Fano lines for helium and neon using tRecX-haCC

Hareesh Chundayil·Armin Scrinzi·Vinay Pramod Majety
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Abstract

Single-photon and multi-photon ionization of helium and neon atoms by ultrashort extreme ultraviolet radiation is studied. The wavelength of radiation is chosen to excite a set of doubly excited states. We analyse the lineshapes arising from the presence of doubly excited states and numerically demonstrate the sensitivity of the Fano $q$ parameter to the order of multi-photon process. The computations were performed using the tRecX-haCC package developed by the authors. The tRecX-haCC package solves the time-dependent Schr\"odinger equation in the presence of a laser pulse and computes the photoelectron spectra including the narrow resonance peaks using the tSurff and iSurf techniques.

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Hareesh Chundayil, Armin Scrinzi, Vinay Pramod Majety. 2024-06-13. Single-photon and multi-photon Fano lines for helium and neon using tRecX-haCC. https://doi.org/10.1088/1361-6455/ad839a

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