Electron photon coincidence

Coincidence imaging is a technique that extracts an image of a test system from the statistics of photons transmitted by a reference system when the two systems are illuminated by a source

Coincidence measurements of electron impact excitation of ... Electron-photon coincidence technique has been used to obtain Stokes and Electron Impact Coherence Parameters (EICPs) for excitation of 4 1 P 1 state of zinc atoms. We present an extended set of data for incident electron energy of 100 eV and electron scattering angles from 5° to 40°. A multi-stop time-of-flight spectrometer for the ... In this study, we describe an advanced multi-functional, variable-energy positron beam system capable of measuring the energies of multiple “positron-induced” electrons in coincidence with the Doppler-shifted gamma photon resulting from the annihilation of the correlated positron.

Coincidence studies of electron and photon impact ...

Physics - Viewpoint: Photonic Hat Trick Apr 10, 2017 · The oscillations in the rate of three-photon coincidence measured by the detectors provide the signature of genuine three-photon interference. Scheme of the setup used by Jennewein and co-workers . A pump laser generates a three-photon entangled state through a cascade of frequency conversion processes in a nonlinear crystal. Ion-Electron Coincidence Study of Thiophenone Goal: Understand Electron Dynamics of Thiophenone Study fragmentation of thiophenone using XUV pulses and by recording photoions and photoelectrons in coincidence Use coincidence spectroscopy to extract photoelectron energies corresponding to a specific photoion Identify fragmentation pathways corresponding to the removal CASE FILE COPY - NASA

A scattered-electron-cascaded-photon coincidence experiment on the electron impact excitation of the 32Dj states of atomic hydrogen S Chwirot, J Slevin Journal of Physics B: Atomic and Molecular Physics 20 (15), 3885 , 1987

A multi-stop time-of-flight spectrometer for the ...

Multi-electron coincidence spectroscopy: double photoionization from molecular inner-shell orbitals Y Hikosaka1*, P Lablanquie 2,3, F Penent , M Nakano4 and K Ito4 1Department of Environmental Science, Niigata University, Niigata 950-2181, Japan 2UPMC, Université Paris 06, LCPMR, 11 rue Pierre et Marie Curie, 75231 Paris

Calculation of electron–photon coincidence decay of 131mXe ... Calculated electron–photon coincidence spectra for the decay of 131m Xe are presented in Fig. 3. In order to get a first impression of the impact of absorbtion effects, calculations assuming three different electron and photon low-energy cut-off combinations are presented. Lifetime measurements by an electron photon coincidence ... LIFETIME MEASUREMENTS BY AN ELECTRON PHOTON COINCIDENCE METHOD R. E. IMHOF* and F. H. READ Department of Physics, The University, Manchester 13, England A new method is described for determining neutral atomic and molecular lifetimes, by measuring delayed coincidences between inelastically scattered electrons and the subsequent decay photons. The production of CO (A 2 ionization of CO 2: a fragment ... electron- and photon-impact excitation of CO 2. In this paper, we show the direct observation of the CO+(A 2) production by electron impact on CO 2, carrying out fragment ion–photon coincidence (FIPCO) experiments. We also found that the production of CO+(B2 +) is negligible compared with that of CO+(A 2). 2. Experimental procedure

Eshed et al. [8] first demonstrated a method in which the energy of the gamma photon produced by electron-positron annihilation was measured in coincidence with the electron emitted by the Auger decay of an annihilation induced core hole. Specifically, the annihilation-

Goal: Understand Electron Dynamics of Thiophenone Study fragmentation of thiophenone using XUV pulses and by recording photoions and photoelectrons in coincidence Use coincidence spectroscopy to extract photoelectron energies corresponding to a specific photoion Identify fragmentation pathways corresponding to the removal CASE FILE COPY - NASA

Single photon absorption may also initiate Auger electron emission processes, the spectra for which the coincidence ion is the ionized, intact parent molecule. 6 Oct 1980 Parameters are introduced to characterize the electron-photon coincidence rate for atoms where spin-orbit interaction is present in the radiating  FIG. 1: Detector setup for Compton Coincidence Technique scattering, where the incident photon is deflected off an electron at an angle θ. Part of the energy is