Experiments were conducted in a previously described crossed electron/molecular beam instrument1. In brief, an electron beam (~110 meV resolution) is generated with a trochoidal electron monochromator and crossed with an effusive beam of HFeCo3(CO)12 supplied through a capillary tube by sublimation at 348-353 K. The electron energy is scanned by ramping the acceleration voltage of the monochrom...

Laser-plasma-based accelerators can provide electrons over a broad energy range and/or with large momentum spread. The electron beam energy distribution can be controlled via accurate control of laser and plasma properties, and beams with energies ranging from approximately 0.5 to 1000 MeV have been observed. Measuring these energy distributions in a single shot requires the use of a diagnostic...

An (e, e+ion) spectrometer has been constructed that has the capability to measure time-of-flight (TOF) mass spectra of gases in coincidence ith energy selected inelastically scattered electrons, as a function of impact energy, electron energy loss and electron scattering angle. Relative o earlier dipole-regime implementations of the (e, e+ion) technique, this spectrometer can be used to study ...

6 Contents Introduction The advantage of radioisotopic standards compared to other physical standards is the independence of their properties from outer conditions. They are neither sensitive to temperature change nor to progress of time. They serve as influence-free-etalon. That is why their use is advantageous in fundamental research, where high precision is required. For instance in direct n...

A new type of electrostatic electron spectrometer is developed, capable of particular sensitive measurements of energy spectra and time-of-flight distributions. This instrument is specifically designed and optimized for laser-pump/x-ray-probe measurements, where photo electrons or Auger electrons from surfaces, clusters, molecular or atomic targets are being measured with high time-resolution a...

-Results of electron spectrometer and cylindrical Langmuir probe measurements of ionospheric electron energy distribution in the range from about 0.2 eV to 4-0 eV are presented and discussed in this paper.