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COLTRIMS - Attoclock

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Location   Contact
ETH Zurich, IQE
Ultrafast Laser Physics
Auguste-Piccard-Hof 1
8093 Zurich
  Laura Cattaneo
Tel +41 44 633 49 77
)clu(aun5rai0@px.hyk)s.e*etq/hzy+.cq5hr
     

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) »»
 
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Coltrims1Coltrims2
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.
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