Peer-reviewed Publications                                                   

*First author, †Corresponding author

Neural-network design for electron energy probability function reconstruction

A Jo*, J.-J. Dang†, and JY Kim†

(In Preparation)

Neutral–plasma time-scale criterion for breathing oscillations in E×B Penning sources

JY Kim*† and MK Lee

(In Preparation)

Determination of electron velocity distribution functions via neural network-based smoothing

CS Kim*, JM Park, A Jo, JY Kim†

(In Preparation)

Neural network-based reconstruction of ion energy distribution function extraction

JY Kim* and H Kim†

(Under Review)

Dynamic coupling of plasma and discharge current oscillations via space-charge-limited electron emission

MK Lee*, JY Kim†, KJ Chung†

(Under Review)

Phase-resolved diagnostics of oscillatory plasma using a dual-tip Langmuir probe

MK Lee*, J Park, J Nam, JY Kim†, KJ Chung†

(Under Review)

[2026] Volumetric characterization of CCPs via 2.5-dimensional optical emission tomography

H Lee*, J Choi, J Ko, D Wi, C Kang, S Oh, JY Kim†and S Park†

Plasma Sources Science and Technology 35 03LT01

[2025] Dynamic three-wave coupling between local sporadic spokes and emergence of global breathing oscillation in partially magnetized cross-field plasmas

 JY Park* and JY Kim†

Communications Physics 8 380

[2025] Robust extraction of electron energy probability function via neural network-based smoothing

JY Kim*†

Plasma Sources Science and Technology 34 07LT01

[2025] Confinement-driven enhancement of negative hydrogen ion production in anode spot plasma

JY Choi*, YS Hwang, JY Kim†, KJ Chung†

Plasma Sources Science and Technology 34 2

[2024] Development of magnetic filter-based plasma source for low electron temperature below 1 eV

JY Choi*, JY Kim†, KJ Chung†

Journal of Korean Physical Society

[2024] Discharge mode transition in partially magnetized E×B Penning discharge
MK Lee*, K Hara, KJ Chung, JY Kim†

Physics of Plasmas 31 123508 

*Joint research outcomes with Stanford University

[2024] Piezoelectric energy harvesting from the atomic oxygen hypervelocity impact in low earth orbit
JH Seo*, JY Choi, JH Seok, JH Cha JY Kim, JH Seok, YG Ki , HJ Lee, CG Kim, KJ Chung, YH Kim†

Acta Astronautica 223 585

[2024] Generation of low-energy abundant electron energy probability functions using axial magnetic field for charge neutralizers
M Lee*, J Park, J Nam, JY Kim†, KJ Chung†

Plasma Sources Science and Technology 33 065003

[2023] Unintended gas breakdowns in narrow gaps of advanced plasma sources for semiconductor fabrication industry
SH Son*, G Go, W Villafana, ID Kaganovich, A Khrabrov, HC Lee,  KJ Chung, GS Chae, S Shim, D Na, JY Kim†
(Invited), Applied Physics Letters 123 23

*Joint research outcomes with Samsung Electronics, Seoul National University, Korea University Sejong, and Princeton University

[2023]Azimuthal and axial dispersion relation of low frequency oscillation in partially magnetized plasma with crossed electric and magnetic fields
M Lee*, C Cheon, J Choi, HJ Lee, YS Hwang, KJ Chung, JY Kim†

(Invited), Physics of Plasmas 30 103502

[2023] Experimental evidence of various mode numbers of azimuthal waves in an E×B Penning source for semiconductor processing
C Cheon*, J Choi, JBW Koo, JY Kim†

 Plasma Sources Science and Technology 23 07LT01

[2023] Rotating spoke frequency in E×B Penning source with Two-ion-species plasma
J Choi*, C Cheon, YS Hwang, KJ Chung, JY Kim†
Plasma Sources Science and Technology 32 01LT01

[2023] Kinetic electron cooling in magnetic nozzles: modeling and experiments
JY Kim*†, KJ Chung, K Takahashi, M Merino, E Ahedo

 (Invited Review) Plasma Sources Science and Technology 32 073001

[2023] Development of Penning ion gauge for in-situ measurement of neutral pressure in VEST
WI Jeong*, YH Jung, JY Kim, KH Lee, JY Park, YS Hwang†

Fusion Engineering and Design 197 114034

[2023] Influence of electrode structure on ion beam extraction in cold-cathode ion source
M Lee*, JY Kim, Y Kim, YS Hwang, KJ Chung†

 IEEE Transaction of Plasma Science 51 1404
 

[2022] Efficiency improvement of an E×B Penning discharge source by enhanced cross-field transport of electrons
JY Kim*, J Choi, J Choi, YS Hwang, KJ Chung†

Plasma Sources Science and Technology 31 05LT02

[2022] High-magnetic-confinement mode in partially magnetized E×B plasma
JY Kim*, J Choi, YS Hwang, KJ Chung†

 Physical Review E 105 L053202

[2022] Review of the gas breakdown physics and nanomaterial-based ionization gas sensors and their applications
JY Kim*, I Kaganovich, HC Lee†

(Invited Review) Plasma Sources Science and Technology 31 033001

[2022] Identification of kink instability in 3D helical flux ropes at VEST
JY Park*, JY Kim, S Kim, EC Jung, YS Hwang†

Physics of Plasmas 29 052112

[2022] Discharge characteristics and dynamics of a magnetized current-carrying line-tied plasma
MAI Elgarhy*, M Lee, JY Kim, KJ Chung†

AIP Advances 120 015110

[2021] Exploring the nonextensive thermodynamics of partially ionized gas in magnetic field
JY Kim*, HC Lee, G Go, YH Choi, YS Hwang, KJ Chung†

Physical Review E 104 045202

[2021] Electric potential in partially magnetized E×B discharges
JY Kim*, J Choi, YS Hwang, KJ Chung†

 AIP Advances 11 085113

[2021] Dependence of the polytropic index of plasma on magnetic field
JY Kim*, G Go, YS Hwang, KJ Chung†

New Journal of Physics 23 052001

[2021] Magnetic confinement and instability in partially magnetized plasma
JY Kim*, JY Jang, J Choi, J Wang, WI Jeong, MAI Elgarhy,G Go, KJ Chung†, YS Hwang†

Plasma Sources Science and Technology 30 025011

Joint research outcomes with Applied Materials

[2020] Non-Maxwellian electron energy probability functions in an indirectly heated cathode Bernas source
JY Kim*, WI Jeong, MAI Elgarhy, J Choi, G Go, KJ Chung, YS Hwang†

 Applied Science and Convergence Technology 29 6 (2020)

[2019] Time-dependent kinetic analysis of trapped electrons in a magnetically expanding plasma
JY Kim*, JY Jang, KS Chung, KJ Chung, YS Hwang†

Plasma Sources Science and Technology 28 07LT01

[2018] Effect of boronization in VEST: Achieving 0.1 MA discharge
J Yang*, SH Hong, D Kim, J Jang, JY Kim, EC Jung, Y Kim, YS Hwang†

Fusion Engineering and Design 137 358

[2018] Thermodynamics of a magnetically expanding plasma with isothermally behaving confined electrons
JY Kim*, KS Chung, S Kim, JH Ryu, KJ Chung, YS Hwang†

New Journal of Physics 20 063033

[2016] Enhancement of negative hydrogen ion production at low pressure by controlling the electron kinetics property with transverse magnetic field
JY Kim*, WH Cho, JJ Dang, S Kim, KJ Chung, YS Hwang†

Plasma Sources Science and Technology 25 065019

[2016] Characterization of electron kinetics regime with electron energy probability functions in inductively coupled hydrogen plasmas
JY Kim*, WH Cho, JJ Dang, KJ Chung, YS Hwang†

Physics of Plasmas 23 023511

[2016] Electron cyclotron resonance heating by magnetic filter field in a negative hydrogen ion source
JY Kim*, WH Cho, JJ Dang, KJ Chung, YS Hwang†

Review of Scientific Instruments 87 02B117

[2016] Kinetics of electrons and neutral particles in radio-frequency transformer coupled plasma H- ion source at Seoul National University
KJ Chung*, JJ Dang, JY Kim, WH Cho, YS Hwang†

New Journal of Physics 18 105006

[2016] Optimization of plasma parameters with magnetic filter field and pressure to maximize H- ion density in a negative hydrogen ion source
WH Cho*, JJ Dang, JY Kim, KJ Chung, YS Hwang†

Review of Scientific Instruments 87 02B136

[2015] Response to comment on effect of the depleted distribution on total energy loss with argon in inductively coupled plasmas1
JY Kim*, YC Kim, YS Kim, CW Chung†

Physics of Plasmas 22 01350

[2015] Experimental verification of the Boltzmann relation at the wall in inductively coupled plasmas
YC Kim*, JY Kim*, HC Lee, YS Kim, JY Kim, SW Cho, CW Chung†

Applied Physics Letters 106 074103

[2015] Effect of the depleted distribution on total energy loss with argon in inductively coupled plasmas
JY Kim*, YC Kim, YS Kim, CW Chung†

Physics of Plasmas 22 013501

[2014] Power dependence of electron density at various pressures in inductively coupled plasmas
JY Kim*, DH Kim, JH Kim, SB Jeon, SW Cho, CW Chung†

Physics of Plasmas21 113505

[2014] Experimental observation of the plasma potential with the screening temperature
JY Kim*, DH Kim, CW Chung†

Physics of Plasmas 21 033506

[2014] Investigation of the Boltzmann relation in plasmas with non-Maxwellian electron distribution
JY Kim*, HC Lee, DH Kim, YS Kim, YC Kim, CW Chung†

Physics of Plasmas 21 023511

[2013] Experimental verification of the Boltzmann relation in confined plasmas: Comparison of noble and molecule gases
HC Lee*, HJ Hwang, YC Kim, JY Kim, DH Kim, CW Chung†

Physics of Plasmas 20 033504