Charge exchange collisions of deuterium in a rubidium vapor target

Nonradiative charge transfer in collisions of protons with rubidium atoms

“…The differences are within 9% for E < 3 keV. This demonstrates that our calculations Girnius [4] Ebel [5] Nagata [6] Kubach [8] Kimura [9] Avakov [10] (b) [8] (dashed line), Kimura et al [9] (dotted line), and Avakov et al [10] (solid line). Experimental results are cited from the papers by Girnius et al [4] (solid circles), Ebel et al [5] (solid squares), and Nagata et al [6] (solid up-triangles).…”

“…[1−4] The chargetransfer cross sections for proton-rubidium collisions have been measured in many experiments since the early 1970s. Using a slow proton source and a rubidium container as the target, Girnius et al, [4] and Ebel and Salzborn [5] have measured the total chargetransfer cross sections for energies above 0.2 keV. Utilizing the proton beam obtained from the electronbombardment ion source and the rubidium target cell, the total and state-selective charge-transfer cross sections have been measured by Nagata, [6] and Nagata and Kuribara [7] in the energy ranges of 0.4 keV-5.0 keV and 0.06 keV-5.0 keV, respectively.…”

“…The theoretical results are the present calculations (solid line with open symbols) and those that are cited from the papers by Kubach et al[8] (dashed line), Kimura et al[9] (dotted line), and Avakov et al[10] (solid line). Experimental results are cited from the papers by Girnius et al[4] (solid circles), Ebel et al[5] (solid squares), and Nagata et al[6] (solid up-triangles).…”

Implementation of synthetic fast-ion loss detector and imaging heavy ion beam probe diagnostics in the 3D hybrid kinetic-MHD code MEGA

“…where the sum is over all possible reactions that attenuate the beam; n k is the secondary reactant density; and σv k is the reaction rate of the k th reaction. Only two reactions are considered to generate the attenuation of the primary: the electron-impact ionization 22 and the charge-exchange reactions with main-ions [23][24][25] . Singleionization step is implemented in the simulation code as the recombination via charge-exchange (i.e., Cs + +D 0 → Cs 0 + D + ) is expected to be much smaller, since the neutral density in AUG is of the order 26 of n 0 ∼ 10 16 m −3 .…”

Implementation of synthetic fast-ion loss detector and imaging heavy ion beam probe diagnostics in the 3D hybrid kinetic-MHD code MEGA

“…two reactions are considered to generate the attenuation of the primary: the electron-impact ionization 22 and the charge-exchange reactions with main-ions. [23][24][25] The single-ionization step is implemented in the simulation code as the recombination via charge-exchange (i.e., Cs + + D 0 → Cs 0 + D + ) is expected to be much smaller, since the neutral density in AUG is of the order 26 of n 0 ∼ 10 16 m −3 . Impurity-induced ionization reaction rates, as extrapolated from lithium in Ref.…”