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arXiv · 1811.05341

Fano's propensity rule in angle-resolved attosecond pump-probe photoionization

David Busto·Jimmy Vinbladh·Shiyang Zhong·Marcus Isinger·Saikat Nandi·Sylvain Maclot·Per Johnsson·Mathieu Gisselbrecht·Anne L'Huillier·Eva Lindroth·Jan Marcus Dahlström
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Abstract

In a seminal article, Fano predicts that absorption of light occurs preferably with increase of angular momentum. Here we generalize Fano's propensity rule to laser-assisted photoionization, consisting of absorption of an extreme-ultraviolet photon followed by absorption or emission of an infrared photon. The predicted asymmetry between absorption and emission leads to incomplete quantum interference in attosecond photoelectron interferometry. It explains both the angular-dependence of the photoionization time delays and the delay-dependence of the photoelectron angular distributions. Our theory is verified by experimental results in Ar in the 20-40 eV range.

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David Busto, Jimmy Vinbladh, Shiyang Zhong, Marcus Isinger, Saikat Nandi, Sylvain Maclot, Per Johnsson, Mathieu Gisselbrecht, Anne L'Huillier, Eva Lindroth, Jan Marcus Dahlström. 2018-11-13. Fano's propensity rule in angle-resolved attosecond pump-probe photoionization. https://doi.org/10.1103/physrevlett.123.133201

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