Alejandro Lopez Ortega
California Institute of Technology
55 Papers
92 Citations
Alejandro Lopez Ortega is an academic researcher from California Institute of Technology. The author has contributed to research in topics: Plasma & Cathode. The author has an hindex of 14, co-authored 49 publications.
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Papers
Plasma hollow cathodes
TL;DR: In this paper, the status of 2D global simulations of hollow cathode plasmas, hollow cathodes, hollow cylode plume instabilities, and the development of higher current cathodes and low-current heaterless cathode technologies are discussed.
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Challenges in the development and verification of first-principles models in Hall-effect thruster simulations that are based on anomalous resistivity and generalized Ohm’s law
TL;DR: In this article, a 2D axisymmetric hydrodynamics code was implemented in 2D (r-z) simulations and successfully predicted the behavior of the discharge and the erosion of a Hall-effect thruster over different operating conditions and geometries.
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Facility Effect Characterization Test of NASA's HERMeS Hall Thruster
Wensheng Huang,Hani Kamhawi,Thomas W. Haag,Alejandro Lopez Ortega,Ioannis G. Mikellides +4 more
- 25 Jul 2016
TL;DR: In this paper, a test to characterize the effect of varying background pressure on NASA's 12.5kW Hall Effect Rocket with Magnetic Shielding (SEP TDM) had being completed.
Plasma simulations in 2-D (r-z) geometry for the assessment of pole erosion in a magnetically shielded Hall thruster
TL;DR: Hall2De as discussed by the authors is a 2D axisymmetric code that makes use of a hydrodynamics formulation for both electrons and ions and assumes a quasi-neutral plasma.
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Laser-induced fluorescence measurements of acceleration zone scaling in the 12.5 kW HERMeS Hall thruster
Vernon H. Chaplin,Benjamin Jorns,Alejandro Lopez Ortega,Ioannis G. Mikellides,Ryan W. Conversano,Robert B. Lobbia,Richard R. Hofer +6 more
TL;DR: In this article, laser-induced fluorescence measurements of acceleration zone scaling with discharge voltage (V d), magnetic field strength (B), and facility background pressure (P B G) in NASA's 12.5 kW Hall Effect Rocket with Magnetic Shielding are presented.
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