Electron detachment of H in collision with Ne and Ar ions
نویسندگان
چکیده
Total-electron detachment cross sections for H colliding with multiply charged Ne and Ar ions are calculated using the two-center atomic-orbital close-coupling expansion method in the center-of-mass energy range of 4–200 keV. The calculation shows that there is no core effect, and that electron capture only plays a minor role for energies above 20 keV. At 50 keV, where electron capture is not important, the single-center atomic-orbital expansion method was used to calculate the detachment cross sections for incident charges q51 –8. The present calculations are shown to be in good agreement with experimental data. @S1050-2947~97!09909-5#
منابع مشابه
Calculation of the total cross section for the ionization of H, He, Ne and Ar atoms by bare ions at the high energy range
In the present work, the total cross-section for the ionization of H, He, Ne and Ar atoms by +He2+ ، H+ ، Li3 ions has been calculated. In these calculations, a binary encounter approximation in the form of a two-body process between projectile ions and atomic electrons at the high energy range has been implemented. In order to enter the nuclear role of the target atom, the atomic electron vel...
متن کاملStudies of charge exchange in symmetric ion–ion collisions
We have measured the total cross sections for single charge exchange in He– He, Ne–Ne and Ar–Ar collisions at centre-of-mass energies of 1.8–14.8, 1.8–10.8 and 2.8–7.3 keV, respectively, using an intersecting beam technique. The results for He–He collisions are compared with existing measurements and calculations. For Ne–Ne and Ar–Ar the measured cross sections are compared with results from ne...
متن کاملStrong-field nonsequential double ionization of Ar and Ne
We investigate the nonsequential double ionization (NSDI) of Ar and Ne based on quantitative rescattering theory (QRS). According to QRS theory, each elementary NSDI process can be calculated by multiplying the returning electron wave packet with appropriate differential electron-ion scattering cross sections. We include (e, 2e) and electron-impact excitation cross sections of Ar+ to obtain the...
متن کاملA study of the formation , dissociation and reactivity of molecular dications
This thesis describes the commissioning o f a new position-sensitive coincidence (PSCO) time-of-flight (TOF) mass spectrometer, which has been designed and constructed for studying the dynamics and kinematics o f dication-neutral reactions at low collision energies (4-25 eV). These reactions commonly form two singly charged ions that the PSCO experiment detects in coincidence on an event-by-eve...
متن کاملEmission and sputtering characteristics of Ne-Ar mixed gas glow discharge plasmas.
The emission characteristics of several Cu lines emitted from a Ne-Ar mixed gas glow discharge plasma were investigated. The addition of small amounts of Ar to a Ne plasma increases the sputtering rate of a Cu sample because Ar ions, which work as the impinging ions for cathode sputtering, are predominantly produced through Penning ionization collisions between Ne metastables and Ar atoms. Ar a...
متن کامل