Ionization of thymine by electron impact: investigation of inner shell orbitals

International audienceTriply differential cross section for the ionization of inner orbitals of thymine by electron impact is investigated at low impact energy. Results of first and second Born calculations performed at 250 eV incident energy with coplanar asymmetric geometry are compared with recent experiments. The initial state of the target is described by one single center wavefunction. It is observed that second Born calculations improve substantially the agreement with experiments

Numerical Simulation of Gas-Liquid-Solid Three-Phase Flow in Deep Wells

A gas-liquid-solid flow model which considers the effect of the cuttings on the pressure drop is established for the annulus flow in the deep wells in this paper, based on which a numerical code is developed to calculate the thermal and flow quantities such as temperature and pressure distributions. The model is validated by field data, and its performance is compared with several commercial software. The effects of some important parameters, such as well depth, gas kick, cuttings, and drilling fluid properties, on the temperature and pressure distributions are studied

Ionization of thymine by electron impact: investigation of inner shell orbitals:

Triply differential cross section for the ionization of inner orbitals of thymine by electron impact is investigated at low impact energy. Results of first and second Born calculations performed at 250 eV incident energy with coplanar asymmetric geometry are compared with recent experiments. The initial state of the target is described by one single center wavefunction. It is observed that second Born calculations improve substantially the agreement with experiments