FOUZIA Bouchelaghem

شيكوش منصف

تحديد الخواص الفيزيائية الحرارية للغازات أحادية الذرة تتكون من غازات نادرة

Reguig Ikram

Les effets quantiques dans le cas des ions K+ évoluant dans un gaz neutre K aux basses énergies

ABDELHAFID Cheyma , BEN CHARIF Chaima

Propriétés de transport dans les collisions ion - atome

In this work, the thermophysical properties of argon dilute gas are revisited, in the range of temperatures between 1K to 1000K, with new and recent potential data points. The built potential will then be introduced into the Schrödinger wave equation to be able to solve it numerically. The calculations of various transport parameters, namely diffusion, viscosity, and thermal conductivity, are extended to include the nuclear spins and the symmetry effects, which arise from the identity and indistinguishability of the colliding atoms.

Citation

Fouzia Bouchelaghem , Chikouche Moncef, Chikouche Moncef, ,(2023), Transport properties of argon atoms diffusing in their parent gas.,the National Seminar of Physics, Chemistry, and Their Applications Webinar (NSPCA'23),Bordj Bou Arreridj

Transport properties of argon atoms diffusing in their parent gas.

Citation

Samra Nehaoua , ADMIN Admin , Fouzia Bouchelaghem , ,(2023), Transport properties of argon atoms diffusing in their parent gas.,National Seminar of Physics, Chemistry, and Their Applications Webinar (NSPCA'23),Bordj Bou arriridj

The transport coefficients, diffusion D(T), and reduced mobility K0 are calculated for systems 39K+ − 39K and 41K+ − 39K in a thermal range between 1 and 3000 K within the Chapman–Enskog approximation. This is preceded by a theoretical study of the collision of alkaline ions in their gases for low and intermediate energies in the range 10−14 ≤ E ≤ 10−3 (a.u.), and within this field, we calculate the interaction energy potentials and elastic and charge-transfer cross sections and discuss the isotopic effects in the 39 K+ − 39K and 41K+ − 39K collisions.

Citation

Fouzia Bouchelaghem , Moncef Bouledroua, , (2023), Charge transfer cross sections and transport coefficients of 39K+ − 39K and 41K+ − 39K at low-energy, AIP Advances, Vol:13, Issue:2, pages:025159, AIP Publishing

Une particule subatomique est une composante de lamatière ayant une taille inférieure à celle d’un atome. On retrouve dans le noyau de l’atome deux types de particules: le proton et le neutron. Autour d'un oyau tournent les électrons.

Citation

FouziaBouchelaghem , ,(2023); Cours & Exercices Physique Nucléaire L3/SM,MOHAMED BOUDIAF MSILA,

Les principaux objectifs de cette étude sont d'effectuer des calculs complets de mécanique quantique des sections efficaces de transport, basés sur les potentiels d'interaction ab initio des dimères ioniques de Lee [1] , qui se dissocient asymptotiquement en He+( 2S ) + He(1S), et d'examiner théoriquement les mobilités des ions He+ se déplaçant dans un gaz hélium en les comparant avec les données expérimentales et Théoriques. Afin d'obtenir les coefficients de transport appropriés, cette dernière tâche sera accomplie en injectant les sections efficaces quantiques dans le code Fortran GC.F [2], une version plus récente de l'ancien programme GRAMCHAR.F, tous les deux écrits par Viehland [3-4].

Citation

Fouzia Bouchelaghem , LIAS SYHAM, ,(2023), Calcul des coefficients de transport des ions de Hélium dans un gaz parent par un traitement quantique des sections efficaces,Skikda, Algeria 1st International Conference on Physico-chemistry, Materials Sciences & Applied Mathematics,Skikda

This work deals theoretically with the mobility of alkali ions ( K+) moving in a K atoms. Assuming a very low electric field, the calculations are performed quantum mechanically within the Chapman-Enskog approximation [1]. The calculations start by constructing the ion-atom potentials in the short-range, intermediate, and long-range regions. The appropriate dispersion coefficients are adopted. The potentials are further used to solve the radial wave equation and therefore to determine the phase shifts needed in the computation of the collision integrals and the coefficients of diffusion and mobility. The variation law with temperature of both coefficients is examined.

Citation

Fouzia Bouchelaghem , ,(2018), Transport properties of K+- K collision at low energy,École Thématique sur la Nano-Optique & Plasmonique : Modélisation, Caractérisation et Applications,Tizi-Ouzou

This work deals theoretically with the mobility of alkali ions ( Li+) moving in a Li atoms. Assuming a very low electric field, the calculations are performed quantum mechanically within the Chapman-Enskog approximation [1]. The calculations start by constructing the ion-atom potentials in the short-range, intermediate, and long-range regions. The appropriate dispersion coefficients are adopted. The potentials are further used to solve the radial wave equation and therefore to determine the phase shifts needed in the computation of the collision integrals and the coefficients of diffusion and mobility. The variation law with temperature of both coefficients is examined.

Citation

Fouzia Bouchelaghem , ,(2018), Mobility of ionic lithium atoms diffusing in their parent gas,Le 15ème Congrès de la Division Plasma de la Société française de Physique,Bordeaux

This work deals with the quantum-mechanical calculation of the temperature-dependent mobility of ionic lithium atoms diffusing in their parent gas. The computation of the quantal phase shifts in connection with the gerade and ungerade potential-energy curves, through which Li(+) approaches Li(2s), leads to the computation of the charge-transfer and diffusion cross sections. The behavior of the coefficients of diffusion and mobility with temperature is also examined. Throughout this work, the isotopic effects in the (6)Li(+)-(6)Li and (7)Li(+)-(6)Li collisions are emphasized.

Citation

Fouzia Bouchelaghem , Moncef. Bouledroua, , (2014), Quantum effects in the case of 6Li+and 7Li+ ions evolving in a neutral 6Li gas at a wide range of temperatures, Phys. Chem. Chem. Phys, Vol:16, Issue:5, pages:1875, Physical Chemistry Chemical Physics

This work deals with the quantum-mechanical calculation of the temperature-dependent mobility of ionic lithium atoms diffusing in their parent gas. The computation of the quantal phase shifts in connection with the gerade and ungerade potential–energy curves, through which Li+ approaches Li(2s), leads to the computation of the charge-transfer and diffusion cross sections. The behavior of the coefficients of diffusion and mobility with temperature is also examined. Throughout this work, the isotopic effects in the Li7+-Li7, Li6+-Li7 and collisions are emphasized.

Citation

Fouzia Bouchelaghem , Moncef BOULEDROUA, , (2014), Isotopic effects in the Li+−Li collisions at lower and higher temperatures, Adv. Quantum Chem, Vol:68, Issue:12, pages:239, Advances in Quantum Chemistry

This work deals with the quantum-mechanical calculation of the temperature-dependent mobility of ionic lithium atoms diffusing in their parent gas. The computation of the quantal phase shifts in connection with the gerade and ungerade potential-energy curves, through which Li+ approaches Li(2s), leads to the computation of the charge-transfer and diffusion cross sections. The behavior of the coefficients of diffusion and mobility with temperature is also examined. Throughout this work, the isotopic effects in the 7Li+-7Li, 6Li+-7Li, 6Li+-6Li and 7Li+-6Li collisions are emphasized

Citation

FouziaBouchelaghem , ,(2014); Mouvement des ions dans des gaz monoatomiques. Cas du lithium 6Li et 7Li,UNIVERSITE BADJI MOKHTAR ANNABA,

This work deals theoretically with the mobility of alkali ions ( K+ ) moving in a K atoms. Assuming a very low electric field, the calculations are performed quantum mechanically within the Chapman-Enskog approximation [1]. The calculations start by constructing the ion-atom potentials in the short-range, intermediate, and long-range regions. The appropriate dispersion coefficients are adopted. The potentials are further used to solve the radial wave equation and therefore to determine the phase shifts needed in the computation of the collision integrals and the coefficients of diffusion and mobility. The variation law with temperature of both coefficients is examined

Citation

Fouzia Bouchelaghem , Bouledroua Moncef, ,(2013), Transport properties of ion-atom collision,Fourth International Meeting on Dielectric Materials,Marrakech, Morocco

This work deals theoretically with the charge exchange cross section computed for the system Li-Li+ assuming a very low electric field. The calculations are performed quantum mechanically within theChapman-Enskog model 1. The calculation starts by constructing the ion-atom potential and, with this system, the collisional dynamics are determined by the molecular Σg+ and Σu+ states 2. The gerade and ungerade potential-energy curves are shown in Fig. 1. The potentials are further used to solve the radial wave equation and therefore to determine the phase shifts. These phase shifts have been used to compute the elastic and charge-transfer cross sections. For illustration, the charge-transfer cross section for the scattering at low energies in the Σg+ and Σu+ states are presented in fig. 2.

Citation

Fouzia Bouchelaghem , Bouledroua Moncef, ,(2011), Charge-transfer cross section in the Li+−Li system,Séminaire International sur la Physique des Plasmas,Ouargla, Algérie

This work deals theoretically with the mobility of alkali monatoms (Li+ , Na+ , K+ , Rb+ , Cs+ ) moving in a helium gas. Assuming a very low electric field, the calculations are performed quantum mechanically within the Chapman-Enskog approximation [1]. The calculations start by constructing the ion-atom potentials in the short-range, intermediate, and long-range regions. The appropriate dispersion coefficients are adopted. An example of the generated potential-energy curves is shown in Fig. 1 for the case of NaHe+ and RbHe+ systems. The curves are compared with other calculated potentials. The potentials are further used to solve the radial wave equation and therefore to determine the phase shifts needed in the computation of the collision integrals and the coefficients of diffusion and mobility. The variation law with temperature of both coefficients is examined and the results show that the diffusion coefficients vary like ~aTb . For illustration, the mobility coefficients of sodium and potassium ions diffusing in ground helium gas are presented in Fig 2. Particularly, the results of the reduced mobility, at given temperatures and pressures, can be compared with published values in case of very week electric field in the Table below.

Citation

Fouzia Bouchelaghem , Bouledroua Moncef, ,(2008), Mobility of alkali-ions in a helium gas,19 europhysics Conference on the Atomic and Molecular Physics of ionized Gases,à Grenada Spain

In this work, the thermophysical properties of a helium dilute gas are revisited, in the range of low and high temperatures, with new and recent potential data points. The classical second virial coefficients are computed in order to assess the accuracy of the constructed He-He potential. The results, mainly at high temperatures, are in a good agreement with the published values. The isotopic effects due to the presence of 4He and 3He atoms are also examined and the calculations of various transport parameters, namely diffusion, viscosity, and thermal conductivity, are extended to include the nuclear spins and the symmetry effects, which arise from the identity and indistinguishability of the colliding atoms. iii

Citation

FouziaBouchelaghem , ,(2006); Les propriétés thermophysiques d’un gaz monoatomique d’hélium,UNIVERSITE BADJI MOKHTAR ANNABA,

The thermophysical properties of a helium dilute gas at low and high temperatures are revisited with new and recent potential data points. The second virial coefficients are computed in order to assess the accuracy of the constructed He-He potentials. The results, mainly at high temperatures, are in a good agreement with the published values. The isotopic effects due to the presence of ^4He and ^3He atoms are also examined and the calculations of various transport parameters, namely diffusion, viscosity, and thermal conductivity, are extended to include the nuclear spins and the symmetry effects, which arise from the identity and indistinguishability of the colliding atoms.

Citation

Fouzia Bouchelaghem , Bouledroua Moncef, ,(2006), Isotopic and Symmetry Effects in the Collision of Atomic Helium,59th Annual Meeting of the APS Division of Fluid Dynamics,American Physical Society