News

 

01.08.2015 - Dr. Joshua Williams accepts Assistant Professor position at University of Nevada Reno

Joshua Williams, postdoc in the Jahnke group, accepts an offer for an Assistant Professor position at the University of Nevada Reno. He will start his own research group and continue to collaborate with the Research Unit on ICD.

 

01.08.2015 - Dr. Uwe Hergenhahn joins the Leibniz-Institute for Surface Modification (IOM)

The chemical department of the IOM (Prof. Bernd Abel) and the former IPP group (Dr. Uwe Hergenhahn) agreed to jointly investigate ICD in liquids and on surfaces.

Link

Uwe Hergenhahn

21.10.2014 - ICD Summer School in 2014

All talks and posters are now available for download on summer school page.

 

27.05.2014 - new paper from Heidelberggroup on ETMD

Enhanced One-Photon Double Ionization of Atoms and Molecules in an Enviroment of Different Species

Link

 

07.05.2014 - DAMOP 2014 FOCUS Session on ICD

APS 45th Annual Meeting of the APS Division of Atomic, Molecular and Optical Physics

 

Link

30.04.2014 - ICD Summer School in 2014

In 2014 the ICD Research Group will organize a Summer School which will take place at the "Physik-Zentrum Bad Honnef" during September. More information can be found here.

Place: Physik-Zentrum Bad Honnef

Time: Monday 01/09/2014 to Friday 05/09/2014

16.04.2014 - Dr. Annika Bande rewarded with Freigeist-Fellowship

Dr. Annika Bande, University Heidelberg, Physikalisch-Chemisches Institut, gets Freigeist-Fellowship.

The fellowship is granted to Dr. Bande for her work on ultrafast Energy Transfer Processes in Clusters of Real and Artificial Atoms Induced by Long-Range Electron Correlation. The Freigeist-fellowship is funded by the Volkswagenstiftung to support excellent postdocs. Press release

 

12.01.2014 - New ICD Papers in Nature

Resonant Auger decay driving intermolecular Coulombic decay in molecular dimers

      F. Trinter, M. S. Schöffler, H.-K. Kim, F. P. Sturm, K. Cole, N. Neumann, A. Vredenborg, J. Williams, I. Bocharova, R. Guillemin, M. Simon, A. Belkacem, A. L. Landers, Th. Weber, H. Schmidt-Böcking, R. Dörner and T. Jahnke
      Nature (2013)
    DOI: 10.1038/nature12927

Link

    Site- and energy-selective slow-electron production through intermolecular Coulombic decay

    Kirill Gokhberg, Přemysl Kolorenč, Alexander I. Kuleff and Lorenz S. Cederbaum

      Nature (2013)
        DOI: 10.1038/nature12936

    Link

     

    14.11.2013 - Gustav-Hertz-Preis 2014 is awarded to PD Dr. Till Jahnke

    The Gustav-Hertz-Preis 2013 of the German Physical Society is awarded to PD Dr. Till Jahnke, who is one of the project leaders in the DFG ICD Research Unit.

    "Für seine bahnbrechenden experimentellen Untersuchungen zur langreichweitigen van-der-Waals-Wechselwirkung in Molekülen, insbesondere für seine Arbeiten zum interatomaren Coulomb-Zerfall.“

     

    Link: http://www.dpg-physik.de/preise/preistraeger2014.html

    02.10.2013 - Evolution of Interatomic Coulombic Decay in the Time Domain – Jahnke Group publishes in PRL

    Evolution of Interatomic Coulombic Decay in the Time Domain

    F. Trinter, J. B. Williams, M. Weller, M. Waitz, M. Pitzer, J. Voigtsberger, C. Schober, G. Kastirke, C. Müller, C. Goihl, P. Burzynski, F. Wiegandt, T. Bauer, R. Wallauer, H. Sann, A. Kalinin, L. Ph. H. Schmidt, M. Schöffler, N. Sisourat and T. Jahnke

    Phys. Rev. Lett. 111, 093401 (2013)

    DOI: 10.1103/PhysRevLett.111.093401

    Link: http://link.aps.org/doi/10.1103/PhysRevLett.111.093401

    During the past 15 years a novel decay mechanism of excited atoms has been discovered and investigated. This so-called interatomic Coulombic decay (ICD) involves the chemical environment of the electronically excited atom: the excitation energy is transferred (in many cases over long distances) to a neighbor of the initially excited particle usually ionizing that neighbor. It turned out that ICD is a very common decay route in nature as it occurs across van der Waals and hydrogen bonds. The time evolution of ICD is predicted to be highly complex, as its efficiency strongly depends on the distance of the atoms involved and this distance typically changes during the decay. Here we present the first direct measurement of the temporal evolution of ICD using a novel experimental approach.

    23.09.2013 - Research Group Meeting 2013

    The next ICD research group meeting is scheduled for the 23 of October. This time it is hosted by the Heidelberg group.

    For more information please come back later or check our Meetings Page.

    26.09.2013 - Update:

    The final place for the meeting is Room 520, Im Neuenheimer Feld 368 (IWR), 69120 Heidelberg

    16.07.2013 - International IUPAP Young-Scientist prize for Dr. Till Jahnke

    “The International Union of Pure and Applied Physics (IUPAP) through Commission C15 decided that the 2013 Young Scientist Prize in Atomic, Molecular and Optical (AMO) Physics will be awarded to Till Jahnke for his original and outstanding contributions to the field of AMO physics.”

    The ICD Research Group congratulates Dr. Till Jahnke for this achievement. Dr. Till Janke is one of the project leaders of this research unit. He will receive the prize, including a medal and 1000 EUR, during the ICPEAC 2013 in Lanzhou China (24 - 30 July). For more information see the press release of the Goethe University Frankfurt.

    02.10.2013 - Evolution of Interatomic Coulombic Decay in the Time Domain – Jahnke Group publishes in PRL

    Evolution of Interatomic Coulombic Decay in the Time Domain

    F. Trinter, J. B. Williams, M. Weller, M. Waitz, M. Pitzer, J. Voigtsberger, C. Schober, G. Kastirke, C. Müller, C. Goihl, P. Burzynski, F. Wiegandt, T. Bauer, R. Wallauer, H. Sann, A. Kalinin, L. Ph. H. Schmidt, M. Schöffler, N. Sisourat and T. Jahnke

    Phys. Rev. Lett. 111, 093401 (2013)

    DOI: 10.1103/PhysRevLett.111.093401

    Link: http://link.aps.org/doi/10.1103/PhysRevLett.111.093401

    During the past 15 years a novel decay mechanism of excited atoms has been discovered and investigated. This so-called interatomic Coulombic decay (ICD) involves the chemical environment of the electronically excited atom: the excitation energy is transferred (in many cases over long distances) to a neighbor of the initially excited particle usually ionizing that neighbor. It turned out that ICD is a very common decay route in nature as it occurs across van der Waals and hydrogen bonds. The time evolution of ICD is predicted to be highly complex, as its efficiency strongly depends on the distance of the atoms involved and this distance typically changes during the decay. Here we present the first direct measurement of the temporal evolution of ICD using a novel experimental approach.

    23.09.2013 - Research Group Meeting 2013

    The next ICD research group meeting is scheduled for the 23 of October. This time it is hosted by the Heidelberg group.

    For more information please come back later or check our Meetings Page.

    26.09.2013 - Update:

    The final place for the meeting is Room 520, Im Neuenheimer Feld 368 (IWR), 69120 Heidelberg

    16.07.2013 - International IUPAP Young-Scientist prize for Dr. Till Jahnke

    “The International Union of Pure and Applied Physics (IUPAP) through Commission C15 decided that the 2013 Young Scientist Prize in Atomic, Molecular and Optical (AMO) Physics will be awarded to Till Jahnke for his original and outstanding contributions to the field of AMO physics.”

    The ICD Research Group congratulates Dr. Till Jahnke for this achievement. Dr. Till Janke is one of the project leaders of this research unit. He will receive the prize, including a medal and 1000 EUR, during the ICPEAC 2013 in Lanzhou China (24 - 30 July). For more information see the press release of the Goethe University Frankfurt.

    28.06.2013 - ICD in liquid Water – Paper from the Hergenhahn and Winter group

    Stephan Thürmer, Milan Ončák, Niklas Ottosson, Robert Seidel, Uwe Hergenhahn, Stephen E. Bradforth, Petr Slavíček and Bernd Winter

    On the nature and origin of dicationic, charge-separated species formed in liquid water on X-ray irradiation

    Nature Chemistry 5, 590–596 (2013)

    DOI:10.1038/nchem.1680

    Link: http://www.nature.com/nchem/journal/v5/n7/full/nchem.1680.html

     

    To understand the yield and patterns of damage in aqueous condensed matter, including biological systems, it is essential to identify the initial products subsequent to the interaction of high-energy radiation with liquid water. Until now, the observation of several fast reactions induced by energetic particles in water was not possible on their characteristic timescales. Therefore, some of the reaction intermediates involved, particularly those that require nuclear motion, were not considered when describing radiation chemistry. Here, through a combined experimental and theoretical study, we elucidate the ultrafast proton dynamics in the first few femtoseconds after X-ray core-level ionization of liquid water. We show through isotope analysis of the Auger spectra that proton-transfer dynamics occur on the same timescale as electron autoionization. Proton transfer leads to the formation of a Zundel-type intermediate [HO*···H···H2O]+, which further ionizes to form a so-far unnoticed type of dicationic charge-separated species with high internal energy. We call the process proton-transfer mediated charge separation.

    09.05.2013 - ICD in Biology – New paper from the Dreuw group

      • Ph.H.P. Harbach, M. Schneider, S. Faraji & A. Dreuw
    Intermolecular Coulombic Decay in Biology: The Initial Electron Detachment from FADH- in DNA Photolyases
              J. Phys. Chem. Lett.
      4
              , 943 (2013)
                DOI:
      http://dx.doi.org/10.1021/jz400104h

         

             

               

                      Intermolecular coulombic decay (ICD) is an efficient mechanism of low-energy electron generation in condensed phases and is discussed as their potential source in living cells, tissues, and materials. The first example of ICD as an operating mechanism in real biological systems, that is, in the DNA repair enzymes photolyases, is presented. Photolyase function involves light-induced electron detachment from a reduced flavin adenine dinucleotide (FADH–), followed by its transfer to the DNA-lesion triggering repair of covalently bound nucleobase dimers. Modern quantum chemical methods are employed to demonstrate that the transferred electron is efficiently generated via a resonant ICD process between the antenna pigment and the FADH– cofactors.

              22.11.2012 - ICD Symposium during the DPG Spring Meeting

                We would like to invite you to a symposium on ICD and related processes. The symposium will take place during the DPG Spring meeting of the AMOP section in march 2013. Besides talks of invited international speakers, several talks from national speakers will be given.

                   

                    Vitali Averbukh (Imperial College London)

                      Till Jahnke (University of Frankfurt)

                        Gunnar Öhrwall (MAX-Lab)

                          Kirsten Schnorr (MPI für Kernphysik)

                             

                              Update 28.02.2013:

                                In addition we would like to point out that this contributed session is also part of the ICD Symposion.

                                   

                                    For more general information please go here.

                                      03.09.2012 - Announcement of the "Kick-Off" Meeting

                                      The Kick-Off Meeting is scheduled for January 2012 and will take place at the Sparkassenakademie Schloss Waldthausen in Budenheim. As an important organizational part of this research unit all individual groups will be present. In addition some international speakers have been invited. Confirmed externally speakers are Kiyoshi Ueda (Tohoku University), Robert Moshammer (MPI f. Kernphysik), Andre Knie (Uni Kassel), Arno Ehresmann (Uni Kassel), Mathieu Gisselbrecht (Lund University), Carsten Müller (Uni Düsseldorf) and Petr Slavicek (Technical University Prague).

                                         

                                          Further information and the registration can be found here. If have any questions about the "kick-off" meeting please contact Prof. Reinhard Dörner.

                                             

                                            03.09.2012 - Launch of the ICD Research Unit Webpage

                                            I am glad to announce that the Webpage of this research unit is now finally launched. While it is still incomplete and under constant development the main features for members of the research unit are working. To support the organization and communication it is possible to use an intern dashboard-structured section and register for upcoming meetings. The data exchange is also temporarily possible within the intern section but will be eventually exchanged with a different system.

                                               

                                                      During the next weeks more content will be added to webpage and made accessible for public users. In addition a system for video conferencing is planned.

                                               

                                                      If you have any questions or suggestions please write an email to the
                                              webmaster
                                                      .