First-principles modeling of the IAT-driven anomalous resistivity in hollow cathode discharges II: Numerical simulations and comparison with measurements

2016 ◽  
Author(s):  
Alejandro Lopez Ortega ◽  
Ioannis G. Mikellides ◽  
Benjamin Jorns
Keyword(s):  
Numerical Simulations ◽  
Hollow Cathode ◽  
First Principles ◽  
Anomalous Resistivity

Hollow Cathode Simulations with a First-Principles Model of Ion-Acoustic Anomalous Resistivity

2018 ◽  
Vol 34 (4) ◽  
pp. 1026-1038 ◽  
Author(s):  
Alejandro Lopez Ortega ◽  
Benjamin A. Jorns ◽  
Ioannis G. Mikellides
Keyword(s):  
Hollow Cathode ◽  
First Principles ◽  
Anomalous Resistivity ◽  
Ion Acoustic

scholarly journals Analysis of Multipolar Linear Paul Traps for Ion–Atom Ultracold Collision Experiments

Atoms ◽  
2021 ◽  
Vol 9 (3) ◽  
pp. 38
Author(s):  
M. Niranjan ◽  
Anand Prakash ◽  
S. A. Rangwala
Keyword(s):  
Numerical Simulations ◽  
Detailed Analysis ◽  
First Principles ◽  
Virial Theorem ◽  
Trapped Ions ◽  
Low Energy ◽  
Energy Collision ◽  
Trapped Ion ◽  
Ultracold Collision ◽  
Collisional Heating

We evaluate the performance of multipole, linear Paul traps for the purpose of studying cold ion–atom collisions. A combination of numerical simulations and analysis based on the virial theorem is used to draw conclusions on the differences that result, by considering the trapping details of several multipole trap types. Starting with an analysis of how a low energy collision takes place between a fully compensated, ultracold trapped ion and an stationary atom, we show that a higher order multipole trap is, in principle, advantageous in terms of collisional heating. The virial analysis of multipole traps then follows, along with the computation of trapped ion trajectories in the quadrupole, hexapole, octopole and do-decapole radio frequency traps. A detailed analysis of the motion of trapped ions as a function of the amplitude, phase and stability of the ion’s motion is used to evaluate the experimental prospects for such traps. The present analysis has the virtue of providing definitive answers for the merits of the various configurations, using first principles.

Numerical Simulations of the Partially Ionized Gas in a 100-A LaB6 Hollow Cathode

2015 ◽  
Vol 43 (1) ◽  
pp. 173-184 ◽  
Author(s):  
Ioannis G. Mikellides ◽  
Dan M. Goebel ◽  
Benjamin A. Jorns ◽  
James E. Polk ◽  
Pablo Guerrero
Keyword(s):  
Numerical Simulations ◽  
Hollow Cathode ◽  
Ionized Gas ◽  
Partially Ionized
Sign in / Sign up

Export Citation Format

Share Document