Retrieving transient conformational molecular structure information from inner-shell photoionization of laser-aligned molecules.

Abstract:

:We discuss a scheme to retrieve transient conformational molecular structure information using photoelectron angular distributions (PADs) that have averaged over partial alignments of isolated molecules. The photoelectron is pulled out from a localized inner-shell molecular orbital by an X-ray photon. We show that a transient change in the atomic positions from their equilibrium will lead to a sensitive change in the alignment-averaged PADs, which can be measured and used to retrieve the former. Exploiting the experimental convenience of changing the photon polarization direction, we show that it is advantageous to use PADs obtained from multiple photon polarization directions. A simple single-scattering model is proposed and benchmarked to describe the photoionization process and to do the retrieval using a multiple-parameter fitting method.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Wang X,Le AT,Yu C,Lucchese RR,Lin CD

doi

10.1038/srep23655

subject

Has Abstract

pub_date

2016-03-30 00:00:00

pages

23655

issn

2045-2322

pii

srep23655

journal_volume

6

pub_type

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