Consider the entrance surface of a specimen irradiated by primary fast electrons with energy of the order of 100 keV. Electrons are observed to be emitted from the entrance surface. Those with energies less than around 50 eV are the secondary electrons to which we refer [2]. Electrons with energies between around 50 eV and the energy of the incident electrons are mainly Auger electrons and ther...

High-energy transport properties of charge carriers in ternary random Si1−x−yGexCy alloys are investigated using Full-Band Monte Carlo simulations. Models for scattering mechanisms include phonon scattering, impact ionization and alloy scattering. Phonon scattering rates are wave-vector dependent and calculated consistently with the Full-Band structure. Impact ionization rates are modeled using...

Pulsed field ionization of high-n (90 ≤ n ≤ 150) manifold states in Rb Rydberg atoms has been investigated in high slew-rate regime. Two peaks in the field ionization spectra were systematically observed for the investigated n region, where the field values at the lower peak do not almost depend on the excitation energy in the manifold, while those at the higher peak increase with increasing ex...

OF THESIS DESK-TOP SIZE HIGH REPETITION RATE 46.9 NM CAPILLARY DISCHARGE LASER AS PHOTOIONIZATION SOURCE FOR PHOTOCHEMISTRY APPLICATIONS A portable high repetition rate desktop-size capillary discharge laser emitting at a wavelength of 46.9 nm (26.5 eV photon energy) was demonstrated and used as a photoionization source in nanocluster mass spectroscopy. The high photon energy allows the single-...

In this paper we describe the rescattering process in optical field ionization through a one-dimensional model, which improves the well-known quasistatic model by adding the smoothed Coulomb potential in its second step. The above-threshold ionization spectra and high-order harmonic generation are calculated from this model. They are qualitatively in agreement with the quantum results and exper...

We perform GW calculations on atoms and diatomic molecules at different levels of self-consistency and investigate the effects of self-consistency on total energies, ionization potentials, and particle number conservation. We further propose a partially self-consistent GW scheme in which we keep the correlation part of the self-energy fixed within the self-consistency cycle. This approximation ...

[1] Electron capture and ionization cross sections for protons and nitrogen ions incident on N2 are measured in the energy range 10–100 keV using time of flight (TOF) coincidence counting techniques. In the case of proton impact the formation of N2 + ions dominates for both electron capture and ionization channels at all energies, whereas for N ions, the N2 + formation dominates for electron ca...

The electron-induced L3M two-step double ionization cross sections of metallic Pd were determined experimentally for incident electron beam energies ranging from the double ionization threshold up to 18 keV. The doubleL3M ionization cross sectionswere derived from the intensity ratios (ILαM :ILα) of the resolvedM satellites to the parent diagram lines. The sample was bombarded with monoenergeti...

Measurements of electron capture and ionization of O2 molecules in collisions with H + and O ions have been made over an energy range 10–100 keV. Cross sections for dissociative and nondissociative interactions have been separately determined using coincidence techniques. Nondissociative channels leading to O2 product formation are shown to be dominant for both the H and the O projectiles in th...

A guarded cylindrical graphite ionization chamber of nominal volume 1000 cm3 was designed and fabricated for use as a reference standard for low-dose rate 137Cs brachytherapy sources. The air kerma calibration coefficient (N(K)) of this ionization chamber was estimated analytically using Burlin's general cavity theory, as well as by the Monte Carlo simulation and validated experimentally using ...