Multi-particle momentum correlations extracted using covariance methods on multiple-ionization of diiodomethane molecules by soft-X-ray free-electron laser pulses

Daehyun You; Hironobu Fukuzawa; Yu Luo; Shu Saito; Marta Berholts; Thomas Gaumnitz; Marko Huttula; Per Johnsson; Naoki Kishimoto; Hanna Myllynen; Ahmad Nemer; Akinobu Niozu; Minna Patanen; Eetu Pelimanni; Tsukasa Takanashi; Shin-ichi Wada; Naomichi Yokono; Shigeki Owada; Kensuke Tono; Makina Yabashi; Kiyonobu Nagaya; Edwin Kukk; Kiyoshi Ueda

doi:10.1039/C9CP03638E

Multi-particle momentum correlations extracted using covariance methods on multiple-ionization of diiodomethane molecules by soft-X-ray free-electron laser pulses

Daehyun You,

^a Hironobu Fukuzawa,

*^ab Yu Luo,^a Shu Saito,^a Marta Berholts,^c Thomas Gaumnitz,^d Marko Huttula,^e Per Johnsson,^f Naoki Kishimoto,^g Hanna Myllynen,^c Ahmad Nemer,^ah Akinobu Niozu,^bi Minna Patanen,

^e Eetu Pelimanni,^e Tsukasa Takanashi,^a Shin-ichi Wada,^j Naomichi Yokono,ⁱ Shigeki Owada,^b Kensuke Tono,^k Makina Yabashi,^b Kiyonobu Nagaya,^bi Edwin Kukk^ac and Kiyoshi Ueda

^ab

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* Corresponding authors

^a Institute of Multidisciplinary Research for Advanced Materials, Tohoku University, Sendai 980-8577, Japan
E-mail: fukuzawa@tohoku.ac.jp
Fax: +81-22-217-5380
Tel: +81-22-217-5383

^b RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan

^c Department of Physics and Astronomy, University of Turku, Turku FI-20014, Finland

^d Laboratorium für Physikalische Chemie, ETH Zürich, Zürich, Switzerland

^e Nano and Molecular Systems Research Unit, Faculty of Science, University of Oulu, P. O. Box 3000, 90014 Oulu, Finland

^f Department of Physics, Lund University, Lund SE-22100, Sweden

^g Department of Chemistry, Graduate School of Science, Tohoku University, Sendai 980-8578, Japan

^h Department of Physics, Auburn University, Alabama 36849, Auburn, USA

ⁱ Department of Physics, Kyoto University, Kyoto 606-8502, Japan

^j Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526, Japan

^k Japan Synchrotron Radiation Research Institute (JASRI), Sayo, Hyogo 679-5198, Japan

Abstract

Momenta of ions from diiodomethane molecules after multiple ionization by soft-X-ray free-electron-laser pulses are measured. Correlations between the ion momenta are extracted by covariance methods formulated for the use in multiparticle momentum-resolved ion time-of-flight spectroscopy. Femtosecond dynamics of the dissociating multiply charged diiodomethane cations is discussed and interpreted by using simulations based on a classical Coulomb explosion model including charge evolution.

This article is part of the themed collection: XFELs: cutting edge X-ray light for chemical and material sciences

Physical Chemistry Chemical Physics

Multi-particle momentum correlations extracted using covariance methods on multiple-ionization of diiodomethane molecules by soft-X-ray free-electron laser pulses

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Multi-particle momentum correlations extracted using covariance methods on multiple-ionization of diiodomethane molecules by soft-X-ray free-electron laser pulses

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