INTERNATIONAL CONFERENCE

• Seokhwan Baek, Holak Kim, Prototype Development of 10 W class Pulsed Plasma Thruster System, The 39th International Electric Propulsion Conference (2025) (IEPC), September. 14-19, 2025, London, United Kingdom.
• Haewon Shin, Kil-Byoung Chai, Holak Kim, Effect of Magnetic Field Geometry on the Performance of a Low-Power Applied-field MPD Thruster, The 39th International Electric Propulsion Conference (2025) (IEPC), September. 14-19, 2025, London, United Kingdom.
• Guentae Doh, Hyokjin Cho, Su-kyum Kim, Holak Kim, Establishment of KARI's Electric Propulsion Test Facility: EPISODE-3.8, The 39th International Electric Propulsion Conference (2025) (IEPC), September. 14-19, 2025, London,United Kingdom.
• Holak Kim, Development of a Prototype Model of a Pulsed Plasma Thruster System for Cubesat, The 4th International Fusion and Plasma Conference (2025) (IFPC), June. 9-13, 2025, Daejeon Convention Center, Republic of Korea.
• Seokhwan Baek, Jiwoong Jung, Jeongho Kim, and Holak Kim,Prototype Development of a Low-Power Pulsed Plasma Thruster for CubeSat Applications, The 12th Asian Joint Conference on Propulsion and Power (2025) (AJCPP), Mar. 19-21, 2025, Xian, China.
• Seokhwan Baek, Jiwoong Jung, Jeongho Kim, Junwoo Jung, and Holak Kim, Design of Low-Power Pulsed Plasma Thruster for CubeSat Application, The 17th International Symposium on Sputtering & Plasma Processes (2024) (ISSP), July 02-05, 2024, Kyoto, Japan.
• Heawon Shin, Kil-Byoung Chai, and Holak Kim, AF-MPD Thruster-Based Divertor Plasma Simulator for Heat and Particle Fluxes Tests, 3RD INTERNATIONAL FUSION AND PLASMA CONFERNCE (2024), June 06-24, 2024, Seoul, Repulbic of Korea.
• Holak Kim, Guentae Doh, Su-Kyum Kim, Youngho Kim, Jaegong Park, and Wonho Choe, 5 kW Class Hall thruster system development for GEO satellite, 11th Asian Joint Conference on Propulsion Power (2023) (AJCPP), March 15-18, 2023, Kanazawashi, Ishikawa, Japan.
• Dongho Lee, Jinwoo Kim, Guentae Doh, Sanghoo Park, Holak Kim, and Wonho Choe, Development of a tomographic diagnostic system for local optical emission profiles of Hall thruster plasmas, 37th International Electric Propulsion Conference (IEPC), June 19-23, 2022, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
• Dongho Lee, Jinwoo Kim, Guentae Doh, Sanghoo Park, Holak Kim, and Wonho Choe, Development of a tomographic diagnostic system for local optical emission profiles of Hall thruster plasmas, 37th International Electric Propulsion Conference (IEPC), June 19-23, 2022, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
• Arturo Popoli, Andrea Cristofolini, Laurent Garrigues, Dongho Lee, Guentae Doh, Holak Kim, and Wonho Choe, Hybrid numerical modeling of a 50 W-Class Annular Hall Thruster, 37th International Electric Propulsion Conference (IEPC), June 19-23, 2022, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA
• Guentae Doh, Holak Kim, Dongho Lee, Sanghoo Park, Stéphane Mazouffre, Wonho Choe, Structure of the ion acceleration region in cylindrical Hall thruster plasmas, 5th Workshop on MicroPropulsion & CubeSats, Sept. 8-10, 2021, Virtual Edition
• Dongho Lee, Guentae Doh, Holak Kim, Laurent Garrigues, Wonho Choe, Performance comparisons of 50 W-class micro-Hall thruster plasmas with two different magnetic field topologies, 5th Workshop on MicroPropulsion & CubeSats, Sept. 8-10, 2021, Virtual Edition
• Guentae Doh, Holak Kim, Dongho Lee, Sanghoo Park, and Wonho Choe, Structure of ion acceleration region in cylindrical Hall thruster plasmas based on ion diagnostics, The 10th Asian Joint Conference on Propulsion and Power (AJCPP), Mar. 3-5, 2021, Virtual Conference
• Dongho Lee, Holak Kim, Guentae Doh, and Wonho Choe, A plume mode change in a 50 W-class Hall thruster, The 10th Asian Joint Conference on Propulsion and Power (AJCPP), Mar. 3-5, 2021, Virtual Conference
• Guentae Doh, Holak Kim, Dongho Lee, Sanghoo Park, Sung-Young Yoon, and Wonho Choe, Significant acceleration of Xe+ ion outside the discharge channel in cylindrical Hall thruster plasmas, 36th International Electric Propulsion Conference (IEPC), Sept. 15-20, 2019, University of Vienna, Austria
• Dongho Lee, Holak Kim, Seunghun Lee, Guentae Doh, and Wonho Choe, Development and Performance Test of a 50 W-class Hall Thruster, 36th International Electric Propulsion Conference (IEPC), Sept. 15-20, 2019, University of Vienna, Austria
• Guentae Doh, Holak Kim, Sanghoo Park, Sung-Young Yoon, Dongho Lee, and Wonho Choe, Comparison of Xe+ Velocity Distributions between Annular and Cylindrical Hall Thrusters, Joint Symposium: 32nd ISTS & 9th NSAT, June 15-21, 2019, AOSSA and Happiring, Fukui, Japan
• Dongho Lee, Holak Kim, Guentae Doh, and Wonho Choe, Development of a Magnetic Field-tailored 50 W-class Hall thruster, Joint Symposium: 32nd ISTS & 9th NSAT, June 15-21, 2019, AOSSA and Happiring, Fukui, Japan
• Holak Kim, Seunghun Lee, Geuntae Doh, Dongho Lee and Wonho Choe, Magnetic-field-tailored Hall Thrusters, 9th Asian Joint Conference on Propulsion and Power, Mar. 14-17 (2018) Xiamen, China
• Dongho Lee, Holak Kim, Geuntae Doh, Seunghun Lee, and Wonho Choe, Development of a 50 W class Magnetic field-tailored Hall Thruster, 9th Asian Joint Conference on Propulsion and Power, Mar. 14-17 (2018) Xiamen, China
• Holak Kim, Seunghun Lee, Guentae Doh, and Wonho Choe, Low Power Cylindrical Hall Thruster with Magnetic Field Tailoring, 35th International Electric Propulsion Conference, Oct. 08-12 (2017) Atlanta, Georgia, USA.
• Holak Kim, Seunghun Lee, Guentae Doh, and Wonho Choe, Production of Multiply Charged Ions in Cylindrical Hall Thruster Plasmas, 35th International Electric Propulsion Conference, Oct. 08-12 (2017) Atlanta, Georgia, USA.
• Seunghun Lee, Holak Kim, Guentae Doh, and Wonho Choe, 10 W Level Magnetic Field Tailored Micro Thruster with Anode Layer, 35th International Electric Propulsion Conference, Oct. 08-12 (2017) Atlanta, Georgia, USA.
• Holak Kim, Seunghun Lee, Keuntae Doh, and Wonho Choe, Development of a low-power magnetic-field-tailored Hall thruster, 31st International Symposium on Space Technology and Science (ISTS), 26th ISSFD & 8th NSAT (2017).
• Seunghun Lee, Holak Kim, Keuntae Doh, and Wonho Choe, 10 W Class Micro Hall Thruster with Anode Layer, 31st International Symposium on Space Technology and Science (ISTS), 26th ISSFD & 8th NSAT (2017).
• Holak Kim, Seunghun Lee, Junbum Kim, Youbong Lim, and Wonho Choe, Multiply charged ion generation according to magnetic field configurations in Hall thruster plasmas, 69th Annual Gaseous Electronics Conference, Oct. 10-14 (2016) Bochum, Germany.
• Seunghun Lee, Holak Kim, Junbum Kim, Youbong Lim, and Wonho Choe, Magnetic Field Tailored Annular Hall Thruster with Anode Layer, 69th Annual Gaseous Electronics Conference, Oct. 10-14 (2016) Bochum, Germany.
• Holak Kim, Seunghun Lee, Youbong Lim, Junbum Kim, and Wonho Choe, Plume and beam properties of miniaturized low-power cylindrical Hall thruster for micro-satellites, 52nd AIAA/SAE/ASEE Joint Propulsion Conference, Jul. 25-27 (2016) Salt Lake City, USA.
• Seunghun Lee, Holak Kim, Junbum Kim, Youbong Lim, and Wonho Choe, Annular Hall thruster with high anode efficiency, 52nd AIAA/SAE/ASEE Joint Propulsion Conference, Jul. 25-27 (2016) Salt Lake City, USA.
• Holak Kim, Seunghun Lee, Youbong Lim, and Wonho Choe, Development of a low-power cylindrical type Hall thruster with permanent magnets for micro-satellites, The 8th Asian Joint Conference on Propulsion and Power (AJCPP), Mar. 16-19 (2016) Kagawa, Japan.
• Seunghun Lee, Holak Kim, Youbong Lim, and Wonho Choe, High performance annular Hall plasma thruster with tailored magnetic field, The 8th Asian Joint Conference on Propulsion and Power (AJCPP), Mar. 16-19 (2016) Kagawa, Japan.
• Holak Kim, Youbong Lim, Seunghoon Lee, Jongho Seon, and Wonho Choe, Plasma Characteristics related to Multiply charged ions in Hall Effect Ion beam Sources, The 10th Asian-European International Conference on Plasma Surface Engineering (AEPSE), Sep. 20-24 (2015) Jeju, Korea.
• Holak Kim, Youbong Lim, Jongho Seon, and Wonho Choe, Characteristics of the Ion Beam and Performance related to Multiply Charged Ions in Annular and Cylindrical type Hall Thruster Plasmas, 30th ISTS, 34th IEPC & 6th NSAT Joint Conference, Jul. 04-10 (2015) Kobe-Hyogo, Japan.
• Holak Kim, Youbong Lim, Jongho Seon, and Wonho Choe, Multiply Charged Ions Depending on Magnetic Field Configuration in Hall Thruster Plasmas, 30th ISTS, 34th IEPC & 6th NSAT Joint Conference, Jul. 04-10 (2015) Kobe-Hyogo, Japan.
• Youbong Lim, Holak Kim, Jae Sun Park, Jongho Seon, and Wonho Choe, Nonlinear Ion Acceleration in Hall Thruster Plasmas with Transit-Time Instability, 30th ISTS, 34th IEPC & 6th NSAT Joint Conference, Jul. 04-10 (2015) Kobe-Hyogo, Japan.
• Youbong Lim, Holak Kim, Jae Sun Park, Jongho Seon, and Wonho Choe, Azimuthal Distribution of Neutral and Electron Densities Reconstructed from Optical Emission Images of Hall Thruster Plasma, 30th ISTS, 34th IEPC & 6th NSAT Joint Conference, Jul. 04-10 (2015) Kobe-Hyogo, Japan.
• Holak Kim, Youbong Lim, Jongho Seon, and Wonho Choe, Multiply charged ions in Hall thruster plasmas, The 42nd International Conference on Plasma Science (ICOPS), May 24-28 (2015) Belek, Antalya, Turkey.
• Holak Kim, Youbong Lim, Jongho Seon, and Wonho Choe, Multiply Charged Ions and the Performance Characteristics of Annular and Cylindrical Hall Thruster Plasmas, 1st Korea-Japan Workshop on Electric propulsion Dec. 01-02 (2014) Daejeon, Korea.
• Youbong Lim, Holak Kim, Jongho Seon, and Wonho Choe, High-energy tail formation in an ion energy distribution function in cylindrical Hall thruster plasmas, 1st Korea-Japan Workshop on Electric propulsion Dec. 01-02 (2014) Daejeon, Korea.
• Holak Kim, Youbong Lim, Jongho Seon, and Wonho Choe, Ion beam and performance characteristics in the presence of multiply charged ions in annular and cylindrical type Hall thruster plasmas, 67th Gaseous Electronics Conference (GEC) Nov. 02-07 (2014) Raleigh, USA.
• Youbong Lim, Holak Kim, Jaesun Park, Jongho Seon, and Wonho Choe, High-energy tail formation in an ion energy distribution function in the cylindrical Hall thruster plasma, 67th Gaseous Electronics Conference (GEC) Nov. 02-07 (2014) Raleigh, USA.
• Holak Kim, Youbong Lim, Mihui Seo, Jongho Seon, Hae June Lee, and Wonho Choe, Comparison of the Xe ion beam characteristics between annular type and cylindrical type low power Hall thrusters, 33th International Electric Propulsion Conference (IEPC), Oct. 05-10 (2013) Washington, D.C., USA.
• Youbong Lim, Holak Kim, Seung Hun Lee, Jongho Seon, Hae June Lee, and Wonho Choe, Accurate measurement of an ion energy distribution of Hall thruster plasma using an E  B probe, 33th International Electric Propulsion Conference (IEPC), Oct. 05-10 (2013) Washington, D.C., USA.
• Holak Kim, Mihui Seo, Kijung Kim, Jongho Seon, Hae-Jun Lee, Wonho Choe, Development of E  B Probe to Study Hall Thruster Plasma Characteristics, Japan-Korea Seminar on Plasma Diagnostics, Aug. 23-25 (2012) Jeju, Korea.