Johan Söderström
Senior Lecturer/Associate Professor at Department of Physics and Astronomy; X-ray Photon Science
- Telephone:
- +46 18 471 36 05
- Mobile phone:
- +46 70 480 04 47
- E-mail:
- johan.soderstrom@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
752 37 Uppsala - Postal address:
- Box 516
751 20 UPPSALA
Senior Lecturer/Associate Professor at Department of Physics and Astronomy; X-ray Photon Science; Chemical and Bio-Molecular Physics
- Telephone:
- +46 18 471 36 05
- Mobile phone:
- +46 70 480 04 47
- E-mail:
- johan.soderstrom@physics.uu.se
- Visiting address:
- Ångströmlaboratoriet, Regementsvägen 10
752 37 Uppsala - Postal address:
- Box 516
751 20 UPPSALA
- CV:
- Download CV
- ORCID:
- 0000-0002-9647-0394
Short presentation
My main research interest is the fundamental interaction between X-rays and small molecular systems, which I use to probe the electronic structure of atoms ans molecules - the building blocks of out universe.
I am also interested in developing instrumentation for science, primarily for soft X-ray spectroscopy.
Biography
Ever since I started my Ph. D. studies I have been interested in isolated atoms and molecules, that is matter in the gaseous phase as well as developing instruments for performing new science.
As a Ph. D. student I developed a new type of spectroscopy called XETECO, for the studies of gaseuos species. This is all well described in my thesis here.
Then, as a Post Doc I worked together with Catalin Miron in the finalisation of the PLEIADES beamline at the synchrotron SOLEIL in Paris. This beamline is also ment for studies of gaseous species.
When I had finished my Post Doc I continued my interest in advancing science through building new equipment - this time at Uppsala University where I have been building the HELIOS laboratory which is an HHG laboratory for studies of dynamics in matter.
At the moment I keep driving my main interest in studying fundamental interactions between X-rays and atoms and small molecules using soft X-ray spectroscopy. In order to do this I make use of national and international large scale facilities such as MAX-IV and the European XFEL.

Publications
Selection of publications
A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Part of Journal of Synchrotron Radiation, p. 1264-1275, 2024
- DOI for A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
- Download full text (pdf) of A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Part of Science Advances, 2024
- DOI for Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
- Download full text (pdf) of Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Quantum watch and its intrinsic proof of accuracy
Part of Physical Review Research, 2022
- DOI for Quantum watch and its intrinsic proof of accuracy
- Download full text (pdf) of Quantum watch and its intrinsic proof of accuracy
Photon-recoil imaging: Expanding the view of nonlinear x-ray physics
Part of Science, p. 1630-1633, 2020
Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2020
- DOI for Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
- Download full text (pdf) of Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Rydberg-Resolved Resonant Inelastic Soft X-Ray Scattering: Dynamics at Core Ionization Thresholds
Part of Physical Review Letters, 2015
The ESCA molecule-Historical remarks and new results
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 191-197, 2012
Nonstoichiometric Intensities in Core Photoelectron Spectroscopy
Part of Physical Review Letters, p. 193005, 2012
Recent publications
The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Part of Journal of Synchrotron Radiation, p. 1328-1345, 2025
- DOI for The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
- Download full text (pdf) of The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
Part of Physical Review Letters, 2025
- DOI for Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
- Download full text (pdf) of Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
X-ray-absorption spectrum of O+2
Part of Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2025
The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
Part of Space Science Reviews, 2025
- DOI for The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
- Download full text (pdf) of The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Part of Journal of Synchrotron Radiation, p. 1264-1275, 2024
- DOI for A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
- Download full text (pdf) of A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
All publications
Articles in journal
The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Part of Journal of Synchrotron Radiation, p. 1328-1345, 2025
- DOI for The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
- Download full text (pdf) of The 10 m collimated Rowland spectrometer at the MAX IV Veritas beamline
Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
Part of Physical Review Letters, 2025
- DOI for Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
- Download full text (pdf) of Neutral Sulfur Atom Formation in Decay of Deep Core Holes in SF6
X-ray-absorption spectrum of O+2
Part of Physical Review A: covering atomic, molecular, and optical physics and quantum information, 2025
A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Part of Journal of Synchrotron Radiation, p. 1264-1275, 2024
- DOI for A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
- Download full text (pdf) of A 1D imaging soft X-ray spectrometer for the small quantum systems instrument at the European XFEL
Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Part of Science Advances, 2024
- DOI for Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
- Download full text (pdf) of Parity violation in resonant inelastic soft x-ray scattering at entangled core holes
Atom-specific magnon driven ultrafast spin dynamics in Fe1-xNix alloys
Part of Physical Review B, 2023
Part of Physical Review B, 2023
- DOI for Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process
- Download full text (pdf) of Element-resolved evidence of superdiffusive spin current arising from ultrafast demagnetization process
Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
Part of Physical Review B, 2023
- DOI for Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
- Download full text (pdf) of Atom-specific magnon-driven ultrafast spin dynamics in Fe1-xNix alloys
Ultrafast modification of the electronic structure of a correlated insulator
Part of Physical Review Research, 2022
- DOI for Ultrafast modification of the electronic structure of a correlated insulator
- Download full text (pdf) of Ultrafast modification of the electronic structure of a correlated insulator
Quantum watch and its intrinsic proof of accuracy
Part of Physical Review Research, 2022
- DOI for Quantum watch and its intrinsic proof of accuracy
- Download full text (pdf) of Quantum watch and its intrinsic proof of accuracy
Part of Physical Chemistry, Chemical Physics - PCCP, p. 17166-17176, 2021
- DOI for Breaking inversion symmetry by protonation: experimental and theoretical NEXAFS study of the diazynium ion, N2H+
- Download full text (pdf) of Breaking inversion symmetry by protonation: experimental and theoretical NEXAFS study of the diazynium ion, N2H+
Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
Part of The Journal of Physical Chemistry C, p. 11714-11721, 2021
- DOI for Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
- Download full text (pdf) of Element-Specific Magnetization Dynamics in Co-Pt Alloys Induced by Strong Optical Excitation
Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
Part of Journal of Applied Physics, 2021
- DOI for Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
- Download full text (pdf) of Optical and extreme UV studies of spin dynamics in metallic and insulating ferrimagnets
Ultrafast magnetization dynamics in the half-metallic Heusler alloy Co2FeAl
Part of Physical Review B, 2021
The carbon and oxygen K-edge NEXAFS spectra of CO+
Part of Physical Chemistry, Chemical Physics - PCCP, p. 16215-16223, 2020
- DOI for The carbon and oxygen K-edge NEXAFS spectra of CO+
- Download full text (pdf) of The carbon and oxygen K-edge NEXAFS spectra of CO+
Part of Physical Review Research, 2020
- DOI for Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 3d transition metals
- Download full text (pdf) of Analysis of the linear relationship between asymmetry and magnetic moment at the M edge of 3d transition metals
Photon-recoil imaging: Expanding the view of nonlinear x-ray physics
Part of Science, p. 1630-1633, 2020
Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2020
- DOI for Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
- Download full text (pdf) of Resonant inelastic x-ray scattering on CO2: Parity conservation in inversion-symmetric polyatomics
Angular emission distribution of O 1s photoelectrons of uniaxially oriented methanol
Part of Journal of Physics B, 2020
Part of Journal of Physical Chemistry A, p. 7619-7635, 2019
Developments and enhancements to the HELIOS pump probe system
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 33-37, 2018
Part of Review of Scientific Instruments, 2017
Part of Physical Chemistry, Chemical Physics - PCCP, p. 21921-21929, 2016
Part of Review of Scientific Instruments, 2015
Rydberg-Resolved Resonant Inelastic Soft X-Ray Scattering: Dynamics at Core Ionization Thresholds
Part of Physical Review Letters, 2015
Part of ScienceAsia, p. 290-294, 2014
Deeper Insight into Depth-Profiling of Aqueous Solutions Using Photoelectron Spectroscopy
Part of The Journal of Physical Chemistry C, p. 29333-29339, 2014
High resolution multiphoton spectroscopy by a tunable free-electron-laser light
Part of Physical Review Letters, p. 193201, 2014
- DOI for High resolution multiphoton spectroscopy by a tunable free-electron-laser light
- Download full text (pdf) of High resolution multiphoton spectroscopy by a tunable free-electron-laser light
Part of Journal of Physical Chemistry B, p. 7119-7127, 2014
- DOI for Surface Behavior of Hydrated Guanidinium and Ammonium Ions: A Comparative Study by Photoelectron Spectroscopy and Molecular Dynamics
- Download full text (pdf) of Surface Behavior of Hydrated Guanidinium and Ammonium Ions: A Comparative Study by Photoelectron Spectroscopy and Molecular Dynamics
Part of Nuclear Instruments and Methods in Physics Research Section A, p. 84-88, 2014
- DOI for Measuring the temporal coherence of a high harmonic generation setup employing a Fourier transform spectrometer for the VUV/XUV
- Download full text (pdf) of Measuring the temporal coherence of a high harmonic generation setup employing a Fourier transform spectrometer for the VUV/XUV
Part of Physical Review X, 2013
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2013
- DOI for Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering
- Download full text (pdf) of Laboratory-frame electron angular distributions: Probing the chemical environment through intramolecular electron scattering
Part of Review of Scientific Instruments, 2013
Vibrational scattering anisotropy in O 2 - dynamics beyond the Born-Oppenheimer approximation
Part of New Journal of Physics, p. 113018, 2012
Vibrational scattering anisotropy in O-2-dynamics beyond the Born-Oppenheimer approximation
Part of New Journal of Physics, p. 113018, 2012
Part of Journal of Physical Chemistry B, p. 13017-13023, 2012
The ESCA molecule-Historical remarks and new results
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 191-197, 2012
Nonstoichiometric Intensities in Core Photoelectron Spectroscopy
Part of Physical Review Letters, p. 193005, 2012
Part of Atmospheric Chemistry And Physics, p. 12227-12242, 2012
Part of The Journal of Physical Chemistry Letters, p. 972-976, 2011
Part of The Journal of Physical Chemistry Letters, p. 972-976, 2011
Angle-resolved electron spectroscopy of the resonant Auger decay in xenon with meV energy resolution
Part of New Journal of Physics, 2011
Functionalized nanoparticles in aqueous surroundings probed by X-ray photoelectron spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 375-378, 2011
The Protonation State of Small Carboxylic Acids at the Water Surface from Photoelectron Spectroscopy
Part of Physical Chemistry, Chemical Physics - PCCP, p. 12261-12267, 2011
Functionalized nanoparticles in aqueous surroundings probed by X-ray photoelectron spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 375-378, 2011
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 197-201, 2010
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 197-201, 2010
Circularly Polarized X Rays: Another Probe of Ultrafast Molecular Decay Dynamics
Part of Phys. Rev. Lett., 2010
Angular effects in autoionization of 3 P doubly excited states in He
Part of Journal of Physics: Conference Series, 2009
Excitation of 1S and 3S Metastable Helium Atoms to Doubly Excited States
Part of Physical Review Letters, p. 153001, 2009
Angular effects in autoionization of 3 P doubly excited states in He
Part of Journal of Physics: Conference Series, 2009
Radiative decay spectra of selected doubly excited states in helium
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2008
Part of Chemical Physics Letters, p. 14-19, 2007
Photoinduced Formation of N2 Molecules in Ammonium Compounds
Part of Journal of Physical Chemistry A, p. 9662-9669, 2007
Oxygen K Edge X-ray-Emission-Threshold-Electron Coincidence Spectrum of CO2
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2007
Part of Physical Review A. Atomic, Molecular, and Optical Physics, 2007
Part of Chemical Physics Letters, p. 14-19, 2007
Part of Physical Review Letters, p. 253002, 2006
Resonant inelastic soft x-ray scattering at double core excitations in solid LiCl
Part of Physical Review B. Condensed Matter and Materials Physics, 2006
Double excitations of helium in weak static electric fields
Part of Physical Review Letters, 2006
X-ray yield and selectively excited X-ray emission spectra of atenolol and nadolol.
Part of J Electr Spectr, p. 283-285, 2005
Part of Physical Review A, 2005
X-ray-emission-threshold-electron coincidence spectroscopy
Part of Journal of Electron Spectroscopy and Related Phenomena, p. 161-170, 2004
Resonant inelastic soft X-ray scattering at hollow lithium states in solid LiCl
Part of Physical Review Letters, 2004
Articles, review/survey
The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
Part of Space Science Reviews, 2025
- DOI for The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
- Download full text (pdf) of The Radio & Plasma Wave Investigation (RPWI) for the JUpiter ICy moons Explorer (JUICE)
Comprehensive doctoral thesis
Conference papers
Energy dependent relative cross sections in carbon 1s photoionization
Part of 31ST INTERNATIONAL CONFERENCE ON PHOTONIC, ELECTRONIC AND ATOMIC COLLISIONS (ICPEAC XXXI), 2020
On the relation between X-ray Photoelectron Spectroscopy and XAFS
Part of 15th International Conference On X-Ray Absorption Fine Structure (XAFS15), 2013
High Resolution Photon Counting Detection System for Advanced Inelastic X-Ray Scattering Studies
Part of 2006 IEEE Nuclear Science Symposium Conference Record, p. 735-739, 2006
Manuscripts (preprints)
Magnetic asymmetry around the 3p absorption edge in Fe and Ni
Ultrafast magnetization dynamics in magnetically frustrated NiFe2O4 ferrimagnet
Ultrafast dynamics in Fe65Co35 alloys: Effect of Re doping
Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy
- Download full text 1 (pdf) of Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy
- Download full text 2 (pdf) of Ultrafast magnetization dynamics in half-metallic Co2FeAl Heusler alloy