We measured the collection efficiency of electrons injected by means of photoelectric effect into argon gas at high density at temperatures T=177.3 K, above the critical temperature, and T=142.6 K, below it, for several densities as a function of the applied electric field. We show that the experimental data can be interpreted in terms of the Young-Bradbury model if we take into account the multiple scattering effects that affect the electron-atom scattering cross section.
Collection efficiency of photoelectrons injected into dense ar gas at low and intermediate temperatures
BORGHESANI, ARMANDO-FRANCESCO;
2012
Abstract
We measured the collection efficiency of electrons injected by means of photoelectric effect into argon gas at high density at temperatures T=177.3 K, above the critical temperature, and T=142.6 K, below it, for several densities as a function of the applied electric field. We show that the experimental data can be interpreted in terms of the Young-Bradbury model if we take into account the multiple scattering effects that affect the electron-atom scattering cross section.
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