Atomic Collisions

Responsible :

 LASRI Boumediene

Local :

C 3-3

Team Presentation :

 The atomic collisions team is made up of teacher-researchers and young doctoral students who are mainly concerned with the study and description of the processes of excitation and ionization of atoms and molecules of biological interest by impact of electrons or charged ions through classical models such as the Born I and II approximation and semi-classical methods such as Schwinger's variational principle.

Research carried out within the team

Ionization and excitation processes are of vital interest for fundamental research and many applications such as plasma physics, astrophysics and radiation physics.

The research carried out within the team revolves around :

- The Development of new theoretical formalisms such as Schwinger's variational principle to determine the elements of the transition matrix in order to calculate the forces of collisions, the probabilities and the amplitudes of transition as well as the total and differential cross sections for the processes of excitation and ionization by impact of electrons and protons of hydrogenoid ions such as (He+; Li2+, Be3+) and heliumoid ions such as Ar16+, Ca18+, Fe24+, Kr34+, Si54+ and atoms as well as molecules of interest biological type XHn (H2O, CH4, NH3…). These types of processes are widely observable in hot plasmas. For example, the Beryllium ion being one of the main impurities in Tokamak plasmas
- In the field of high impact velocities, the study of excitation and ionization pathways is done using classical approaches where the Born-I and Born-II approximation becomes reliable.

Team Member :

• Permanent member

Pr. LASRI Boumediene,

Pr. SAHLAOUI Mohammed,

Pr. BENTALHA ZINE el-Abidine.             

Dr. HADDAM Muhammad Abdalkhalaq Chuayb,

Dr. BENMANSOUR Nour el Houda,             

Mr. BALABBACI Mohammed,

•  PhD Student

Mme BOUCHIKHI Asma,

Mr. OURAIBA Mohammed Amine