Separation and solid angle correction of the metastable 1s2s2p 4P Auger yield produced in ion-atom collisions using the biased gas cell technique: A tool for the determination of the population mechanisms

29th International Conference on Photonic, Electronic, and Atomic Collisions

Madesis, I.^1,2 ; Laoutaris, A.^2 ; Doukas, S.^3 ; Dimitriou, A.^1,2 ; Benis, E.P.^4 ; Zouros, T.J.M.^1,2

Dept. of Physics, University of Crete, Heraklion

GR 71003, Greece^1

Tandem Accelerator Laboratory, INPP, NCSR Demokritos, Ag. Paraskevi

GR 15310, Greece^2

Dept. of Material Science and Engineering, University of Ioannina, Ioannina

GR 45110, Greece^3

Dept. of Physics, University of Ioannina, Ioannina

GR 45110, Greece^4

关键词: Consistency checks;    Experimental approaches;    Gas cell;    Gaseous targets;    Ion atom collisions;    Solid angle;    Target gas;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/635/5/052082/pdf
DOI  :  10.1088/1742-6596/635/5/052082

来源: IOP

【 摘 要 】

We demonstrate an experimental approach to the solid angle correction needed for the metastable 1s2s2p4P state obtained in ion-atom collisions with gaseous targets. By applying a small bias voltage VGCon the target gas cell, the4P contributions are separated into two peaks one arising from inside (which is shifted by e VGC) and the other outside the gas cell which is unshifted. Using SIMION we compute the correction in each case and perform a consistency check on our approach.