News

Ursula Keller wins “Swiss Nobel” Marcel Benoist Prize- for pioneering work in ultrafast lasers

Farewell: the NCCR MUST ended - on June 30, 2022

MUST2022 Conference- a great success!

New scientific highlights- by MUST PIs Wörner, Chergui, and Richardson

FELs of Europe prize for Jeremy Rouxel- “Development or innovative use of advanced instrumentation in the field of FELs”

Ruth Signorell wins Doron prizefor pioneering contributions to the field of fundamental aerosol science

New FAST-Fellow Uwe Thumm at ETH- lectures on Topics in Femto- and Attosecond Science

International Day of Women and Girls in Science- SSPh asked female scientists about their experiences

New scientific highlight- by MUST PIs Milne, Standfuss and Schertler

EU XFEL Young Scientist Award for Camila Bacellar,beamline scientist and group leader of the Alvra endstation at SwissFEL

Prizes for Giulia Mancini and Rebeca Gomez CastilloICO/IUPAP Young Scientist Prize in Optics & Ernst Haber 2021

Nobel Prize in Chemistry awarded to RESOLV Member Benjamin List- for the development of asymmetric organocatalysis

Hans Jakob Wörner invited to give the „New Horizons Solvay Lectures” - online, October 5, 12 and 19

Unusual keynote talk at an international scientific conference- Do photons show gender bias?

NCCR MUST at Scientifica 2021- Lightning, organic solar cells, and virtual molecules

COLTRIMS - Attoclock

back

Location		Contact
ETH Zurich, IQE Ultrafast Laser Physics Auguste-Piccard-Hof 1 8093 Zurich		Laura Cattaneo Tel +41 44 633 49 77 clp'auq#rad4@pk+hyq&s.g$etx3hzz#.cvhi

Setup / Configuration		Literature
Momentum space imaging spectroscopy: It measures 3D momentum components (px,py,pz) of fragments in coincidence The target is a supersonically expanded atomic or molecular beam COLTRIMS: Energy resolution meV (electrons), μeV (ions) Attoclock: Temporal resolution about 200 as, temporal localization accuracy about 20 as attoCOLTRIMS: Front-end providing isolated attosecond pulses and pulse trains		COLTRIMS: Dörner, R., Mergel, V., Jagutzki, O., Spielberger, L., Ullrich, J., Moshammer, R., Schmidt-Böcking, H. (2000) Cold Target Recoil Ion Momentum Spectroscopy: a ‘momentum microscope’ to view atomic collision dynamics. Phys Rep 330 95-192 »» Attoclock: Eckle, P., Pfeiffer, A., Cirelli, C., Staudte, A., Dörner, R., Muller, H.G., Büttiker M., Keller U. (2008) Attosecond Ionization and Tunneling Delay Time Measurements in Helium, Science 322 (5907), 1525-1529 »» attoCOLTRIMS: Sabbar, M., Heuser, S., Boge, R., Lucchini, M., Gallmann, L., Cirelli, C., Keller, U. (2014) Combining attosecond XUV pulses with coincidence spectroscopy, Rev. Sci. Instr. 85, 103113 (2014) »»
. The pictures show the COLTRIMS apparatus, an UHV chamber equipped with two time- and position sensitive detectors for detecting negatively and positively charged particles, installed at the end of a 40 cm long spectrometer. The charged fragments created in the interaction region are driven towards the detector by homogeneous electric and magnetic fields (the latter generated by the Helmoltz coils visible in the picture on the left/top) aligned along the spectrometer axis.		The COLTRIMS (COLd Target Recoil Ion Momentum Spectroscopy) is a momentum space imaging technique that allows the coincidence measurement of 3D momentum vectors of fragments originating from atomic and molecular breakup processes. The Attoclock employs elliptically polarized femtosecond laser pulses to ionize atomic or molecular targets. From the magnitude and the direction of the momentum vector of the ion or electron, timing information can be extracted with attosecond temporal resolution and accuracy. The attoCOLTRIMS front-end provides isolated attosecond pulses and attosecond pulse trains in the XUV for attosecond pump-probe spectroscopy with coincidence detection.