Posts Tagged ‘ultrafast dynamics’
Next XLIC Expert Meeting will join WG1 and WG2 topics under the title “From Ultrafast to Ultraslow Dynamics in Molecules and Clusters”. It will be held in the Weizmann Institute of Science Israel , from 23th to 25th January 2017.
The workshop will bring together top researchers in a wide range of fields with the hope of establishing new interactions and future directions. The workshop participation is open to everybody and is jointly organised by COST CM1204 Action (XLIC). For more information please visit the conference website: http://www.weizmann.ac.il/conferences/UUDMC2016/
Abstract Submission Deadline: November 1st, 2016
Registration Deadline: January 5th, 2017
List of Invited speakers:
Noam Agmon, Hebrew University, Israel
Lars H. Andersen, Aarhus University, Denmark
Itzik Ben-Itzhak, Kansas State University, USA
Valerie Blanchet, CELIA, Bordeaux, France
Anastasia Bochenkova, Moscow State University, Russia
Steen Brondsted Nielsen, Aarhus University, Denmark
Philip Bucksbaum, Stanford, USA
Francesca Calegari, Politecnico Milano, Italy
Lorenz Cederbaum, University of Heidelberg, Germany
Henrik Cederquist, Stockholm University, Sweden
Brett Esry, Kansas State University, USA
Sharly Fleischer, Tel-Aviv University, Israel
Jason Greenwood, Queen’s University Belfast, UK
Christiane Koch, Universität Kassel, Germany
Ronni Kosloff, Hebrew University, Israel
Holger Kreckel, MPI-K Heidelberg, Germany
Stephen Leone, UC Berkeley, USA
Nimrod Moiseyev, Technion, Israel
Edvardas Narevicius, Weizmann Institute, Israel
Daniel Neumark, UC Berkeley USA
Thomas Pfeifer, MPI-K Heidelberg, Germany
Igor Schapiro, Hebrew University, Israel
Haruo Shiromaru, Tokyo Metropolitan University, Japan
Jan. R. R. Verlet, Durham University, UK
Mathias Weber, JILA, Colorado, USA
Roland Wester, Universität Innsbruck , Austria
Local Organiser: Yoni Toker (Bar Ilan University)
A post-doctoral researcher position is presently available to join a collaborative program between two research groups at the Institut des Sciences Moléculaires d’Orsay and the SOLEIL Synchrotron light source , dedicated to ultrafast dynamics of electronic and nuclear wavepackets in isolated molecules, from valence- and inner-shell photoionization to fragmentation and reaction dynamics, in time-resolved studies at the attosecond (as) and femtosecond (fs) time scales.
This program will take place in the context of the development of the ATTOLab facility which includes two high performance laser systems (Ti:sapphire IR, <20fs, CEP phase stabilized, respectively 15W/1kHz and 20W/10kHz, installed at CEA/l’Orme-les-Merisiers), and associated attosecond sources in the extreme-UV (XUV) based on laser-driven high harmonic generation. Advanced optical instrumentation of the XUV beamlines is being developed in the related OPT2X project with support of the Université Paris-Saclay.
The experiments will make use of multiparticle coincidence spectroscopy techniques to access physical observables at the most sensitive level, in particular through time-resolved studies of molecular-frame photoemission in excited molecules undergoing ultrafast dynamical changes. The postdoc will contribute to further develop existing equipment, e.g., electron/ion momentum imaging spectrometer of COLTRIMS type, and adapt it to the new capabilities of the 10 kHz attosecond beamline in ATTOLab. In parallel, photoemission studies will be carried out on the PLEIADES beamline at SOLEIL synchrotron. Within the synergy provided by the Université Paris-Saclay groups, opportunities will exist for the post-doctorate fellow to test new ideas using harmonic sources, synchrotron radiation and possibly FEL sources. Close collaborations with theoretical groups have already been established and will be essential to the interpretation of the data.
The candidate should have a PhD degree in either physics or physical chemistry granted within the last four years, and experience with some of the following topics:
– Gas phase molecular & photoionization dynamics using XUV radiation sources
– Multiparticle coincidence spectroscopy & data analysis
– Time & position sensitive charged particle detection
The position is currently available for one year with the possibility of one year extension on mutual agreement. Motivated candidates should forward a CV and contact information for two references before July 10th to:
Danielle Dowek – danielle.dowek@u-psud.fr and/or John Bozek – john.bozek@synchrotron-soleil.fr
ISMO, http://www.ismo.u-psud.fr/
SOLEIL Synchrotron, http://www.synchrotron-soleil.fr/
ATTOLab, http://attolab.fr/index.php
Ultrafast dynamics: new opportunities and challenges for Paris-Saclay
Wednesday, February 11, 2015, 9 h – 18 h
Auditorium of Institut d’Optique Graduate School
Avenue Augustin Fresnel, 91127 Palaiseau
Free but MANDATORY registration (see below)
Programm
Invited speakers
| Dimitris Charalambidis
IESL-FORTH, Greece |
on-linear processes in the XUV spectral region: An advanced tool for attosecond pulse metrology and application |
| Eric Constant
CELIA, Bordeaux |
Generation of High energy ultrashort XUV pulses for the study of non linear transitions induced by XUV photons |
| Franck Delmotte
IOGS, Palaiseau |
XUV multilayer optics for ultrafast science |
| Guillaume Dovillaire
Imagine Optic, Orsay |
Adaptive optics on high power laser – EUV Wavefront measurement |
| Marta Fajardo
GoLP/IPFN, Portugal |
XUV High-Order Harmonic probing of XFEL created Warm Dense Matter |
| Olivier Guilbaud
LPGP, Orsay |
Coherent soft x-ray sources as a probe for dense plasma physics |
| Franck Lépine
ILM, Lyon |
Attosecond molecular physics, towards applications to complex molecules |
| Rodrigo Lopez-Martens
LOA, Palaiseau |
Applications of attosecond lighthouses |
| Jan Luning
LCP-MR, Paris |
Probing Ultrafast Magnetization Dynamics on the Nanometer Length Scale by Coherent X-ray Diffraction at XFELs |
| Françoise Remacle
University of Liège |
Dynamical Studies of Ultrafast Charge Migration in Diatomic and Modular Molecules Probed by Photoelectron Angular Distributions |
| Pascal Salières
LIDyL-LFP, Gif-sur-Yvette |
Attosecond spectroscopy in the gas phase: from charge migration to ionization delays |
| Carlo Spezzani
OPT2X, Orsay |
Optically induced Fe magnetization reversal in Fe/MnAs/GaAs(001) |
| Emma Springate
Rutherford Appleton Lab., UK |
Time- and angle-resolved photoelectron spectroscopy in graphene with high harmonics |
The program includes :
- A round table discussion of 50 min will be widely opened to all those who are interested by the perspectives offered by the use of ultrashort XUV sources for applications in their own research fields. The need for accurate source characterization is one of the topics that we propose to address. Please participate actively!
- A poster session will take place in the entrance hall of IOGS to stimulate discussions during the coffee breaks and the lunch buffet.
The detailed program can be accessed at the link: http://www.lumat.u-psud.fr/IMG/pdf/journee-opt2x_annonce.pdf
Registration form to be send to : chantal.jucha@u-psud.fr
Name/Forename :
Laboratoy :
e-mail:
Poster oui non
Poster title:
Present to the lunch-buffet oui non
An ID card or passport will be mandatory to receive the entrance badge
STSM by Raluca Cireasa, CNRS, Orsay (FR) with Francesca Calegari, National Research Council of Italy CNR-IFN (IT)
On April 14th, 2014 (20 days)
From FRANCE to ITALY
Ultrafast Dynamics of Biomolecules Induced by XUV Attosecond Pulses
Exposing biomolecules, including those of the human body, to high energy photons (from VUV to X-ray) leads to radiation damage. The objective of this project is to use XUV ultrashort pulses (hundreds of attosecond, 1as=10-18 s) to investigate the modifications induced in biomolecules at the level of the electrons and the first stages of the chemical (nuclear) changes. We have investigated several molecules belonging to different classes: aminoacids (Glycine), nucleobasis (Uracil), radiosensitizers=molecules that increase the effect of the radiotherapies (5-Halouracils).
The charge dynamics (electron and hole motions) launched by the photoionisation process are expected to be extremely important in triggering subsequent nuclear dynamics and the associated chemical change and therefore, it plays an essential role in many chemical and biological processes. We have performed pump-probe experiments to study the ultrafast dynamics occurring in some benchmarks biomolecules upon excitation with XUV attosecond pulses. The ensuing dynamics was detected by recording Time-of-Flight (TOF) spectra of the singly ionised fragments as a function of the delay between the XUV pump (~300 as) and a broad VIS-IR probe pulses (~4 fs) and as a function of the XUV energy spectrum. For all systems, we have recorded ultrafast dynamics (<10 fs) manifested as delayed signal appearances and/or sharp rising/decaying signals. An important objective of the experiments on halogenated uracil (FU and BrU) and uracil (U) was to measure the H/H+ transfer dynamics underlying the formation of some fragments. An ultrafast decay of 30-40 fs was observed on the signal from the fragment 43 (HNCO or FCCH) and the complementary rising behaviour on the same timescale was observed for fragment 44, which can be only formed by H/H+ transfer, most probably via tautomerisation (see Fig.). Similar behaviours, although slower, were also measured for the fragments 31 (FC) and 32. These dynamics may be associated with H or proton transfer processes where the difference in timescale is determined by the initial and final sites of the H/proton transfer and, in particular, to the involvement of the halogen atom. Similar dynamics were observed for the corresponding fragments of BrU and U.
The analysis of the results obtained during this campaign is underway. Some preliminary results were already presented as talks at IPW&RIXS2014 conference and at departmental seminars and when finalised, this work will also be the object of joint publications. The STSM has given us the opportunity of setting up a longer term collaboration for designing a gas-phase biomolecular source for the Milano setup – based on the ISMO source that was used for the STSM experiments, for testing the performances of this source at ISMO using energy resolved spectroscopy techniques (beginning of 2015) and for undertaking other common projects to investigate the ultrafast dynamics induced by XUV attosecond pulses in biomolecules (Spring 2015).
Tautomerisation dynamics for 5-FluoroUracil from the di-keto isomer to keto-enol isomer
