papers

2025

1. Nucl. Mater. Energy

   Trapping and release of deuterium in helium-induced tungsten fuzz at low temperature

   K Saito, D Hwangbo, M Miyamoto, and 4 more authors

   Nuclear Materials and Energy, 2025

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   @article{saito2025trapping,
     title = {Trapping and release of deuterium in helium-induced tungsten fuzz at low temperature},
     author = {Saito, K and Hwangbo, D and Miyamoto, M and Yoshida, H and Sasaki, R and Murakami, S and Sakamoto, M},
     journal = {Nuclear Materials and Energy},
     pages = {101859},
     year = {2025},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2024.101859},
   }

2024

1. Nucl. Mater. Energy

   In-vessel inspection of arc traces on the W7-X plasma facing components after the operation phase OP2.1

   D Hwangbo, CP Dhard, S Kajita, and 3 more authors

   Nuclear Materials and Energy, 2024

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   @article{hwangbo2024vessel,
     title = {In-vessel inspection of arc traces on the W7-X plasma facing components after the operation phase OP2.1},
     author = {Hwangbo, D and Dhard, CP and Kajita, S and Naujoks, D and Gao, Y and others},
     journal = {Nuclear Materials and Energy},
     pages = {101846},
     year = {2024},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2024.101846},
   }

2. Nucl. Mater. Energy

   Utilization of D2 molecular band emission for electron density measurement

   D Nishijima, MJ Baldwin, F Chang, and 2 more authors

   Nuclear Materials and Energy, 2024

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   @article{nishijima2024utilization,
     title = {Utilization of D2 molecular band emission for electron density measurement},
     author = {Nishijima, D and Baldwin, MJ and Chang, F and Hwangbo, D and Tynan, GR},
     journal = {Nuclear Materials and Energy},
     volume = {41},
     pages = {101796},
     year = {2024},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2024.101727},
   }

3. Nucl. Mater. Energy

   Operating voltage of a W-fuzz cathode arc and the mass/charge composition of the arc plasma depending on the fuzz thickness

   SA Barengolts, Yu A Zemskov, DL Shmelev, and 2 more authors

   Nuclear Materials and Energy, 2024

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   @article{barengolts2024operating,
     title = {Operating voltage of a W-fuzz cathode arc and the mass/charge composition of the arc plasma depending on the fuzz thickness},
     author = {Barengolts, SA and Zemskov, Yu A and Shmelev, DL and Hwangbo, D and Kajita, S},
     journal = {Nuclear Materials and Energy},
     pages = {101727},
     year = {2024},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2024.101727},
   }

4. Nucl. Fusion

   Overview of the first Wendelstein 7-X long pulse campaign with fully water-cooled plasma facing components

   O Grulke, C Albert, JA Alcuson Belloso, and 8 more authors

   Nuclear Fusion, 2024

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   @article{grulke2024overview,
     title = {Overview of the first Wendelstein 7-X long pulse campaign with fully water-cooled plasma facing components},
     author = {Grulke, O and Albert, C and Belloso, JA Alcuson and Aleynikov, P and Aleynikova, K and Alonso, A and Anda, G and Andreeva, T and Arvanitou, M and Ascasibar, E and others},
     journal = {Nuclear Fusion},
     volume = {64},
     number = {11},
     pages = {112002},
     year = {2024},
     publisher = {IOP Publishing},
     doi = {10.1088/1741-4326/ad2f4d},
   }

2023

1. Mater. Res. Express

   Field emission properties of nano-tendril bundles formed via helium plasma exposure with various additional impurity gases

   Rongshi Zhang, Shin Kajita, Dogyun Hwangbo, and 3 more authors

   Materials Research Express, 2023

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   @article{zhang2023field,
     title = {Field emission properties of nano-tendril bundles formed via helium plasma exposure with various additional impurity gases},
     author = {Zhang, Rongshi and Kajita, Shin and Hwangbo, Dogyun and Tanaka, Hirohiko and Feng, Shuangyuan and Ohno, Noriyasu},
     journal = {Materials Research Express},
     volume = {10},
     number = {5},
     pages = {054002},
     year = {2023},
     publisher = {IOP Publishing},
     doi = {10.1088/2053-1591/acd1d4},
   }

2. Nucl. Mater. Energy

   Arc erosion characteristics of W-fuzz samples with different thicknesses of the nanostructured layer

   Sergey A. Barengolts, Dogyun Hwangbo, and Shin Kajita

   Nuclear Materials and Energy, 2023

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   @article{barengolts2023arc,
     title = {Arc erosion characteristics of {W-fuzz} samples with different thicknesses of the nanostructured layer},
     author = {Barengolts, Sergey A. and Hwangbo, Dogyun and Kajita, Shin},
     journal = {Nuclear Materials and Energy},
     volume = {37},
     pages = {101541},
     year = {2023},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2023.101541},
   }

2022

1. Plasma Fusion Res.

   Motion analysis of arc spots on tungsten fuzz by means of self-avoiding random walk model

   Dogyun Hwangbo, Daisuke Nishijima, Shin Kajita, and 1 more author

   Japanese Journal of Applied Physics, 2022

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   @article{hwangbo2022motion,
     title = {Motion analysis of arc spots on tungsten fuzz by means of self-avoiding random walk model},
     author = {Hwangbo, Dogyun and Nishijima, Daisuke and Kajita, Shin and Ohno, Noriyasu},
     journal = {Japanese Journal of Applied Physics},
     volume = {62},
     number = {SA},
     pages = {SA1007},
     year = {2022},
     publisher = {IOP Publishing},
     doi = {10.35848/1347-4065/ac79fe},
   }

2. Plasma Fus. Res.

   Effect of Deuterium Fluence on Deuterium Retention in Tungsten with Fibrous Nanostructured Layer in a Compact Plasma Device APSEDAS

   Takahisa Sakai, Dogyun Hwangbo, Naoki Orikasa, and 6 more authors

   Plasma and Fusion Research, 2022

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   @article{sakai2022effect,
     title = {Effect of Deuterium Fluence on Deuterium Retention in Tungsten with Fibrous Nanostructured Layer in a Compact Plasma Device {APSEDAS}},
     author = {Sakai, Takahisa and Hwangbo, Dogyun and Orikasa, Naoki and Kusumoto, Mikoto and Takatsu, Katsutomo and Yoshida, Haru and Fujimori, Aoi and Nitta, Ryusei and Sakamoto, Mizuki},
     journal = {Plasma and Fusion Research},
     volume = {17},
     pages = {2405062--2405062},
     year = {2022},
     publisher = {The Japan Society of Plasma Science and Nuclear Fusion Research},
     doi = {10.1585/pfr.17.2405062},
   }

3. Nucl. Mater. Energy

   Changes in morphology and field emission property of nano-tendril bundles after high temperature annealing

   Rongshi Zhang, Shin Kajita, Dogyun Hwangbo, and 3 more authors

   Nuclear Materials and Energy, 2022

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   @article{zhang2022changes,
     title = {Changes in morphology and field emission property of nano-tendril bundles after high temperature annealing},
     author = {Zhang, Rongshi and Kajita, Shin and Hwangbo, Dogyun and Sinelnikov, Dmitry and Tanaka, Hirohiko and Ohno, Noriyasu},
     journal = {Nuclear Materials and Energy},
     volume = {31},
     pages = {101178},
     year = {2022},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2022.101178},
   }

2021

1. J. Plasma Fusion Res.

   Status and prospects of arcing in the magnetic confinement fusion studies

   Dogyun Hwangbo

   Journal of Plasma and Fusion Research (Japanese), 2021

   Bib HTML

   @article{hwangbo2021status,
     title = {Status and prospects of arcing in the magnetic confinement fusion studies},
     author = {Hwangbo, Dogyun},
     journal = {Journal of Plasma and Fusion Research (Japanese)},
     volume = {97},
     number = {4},
     pages = {221--228},
     year = {2021},
   }

2. Vacuum

   Nano-tendril bundles behavior under plasma-relevant electric fields

   VV Kulagin, DN Sinelnikov, DG Bulgadaryan, and 5 more authors

   Vacuum, 2021

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   @article{kulagin2021nano,
     title = {Nano-tendril bundles behavior under plasma-relevant electric fields},
     author = {Kulagin, VV and Sinelnikov, DN and Bulgadaryan, DG and Efimov, NE and Kurnaev, VA and Hwangbo, D and Ohno, N and Kajita, S},
     journal = {Vacuum},
     volume = {183},
     pages = {109799},
     year = {2021},
     publisher = {Pergamon},
     doi = {10.1016/j.vacuum.2020.109799},
   }

3. Plasma Fusion Res.

   Observation of Arc Trails with Significant Damage due to Glow Discharge Wall Conditioning in the Large Helical Device

   Yuki Hayashi, Suguru Masuzaki, Gen Motojima, and 5 more authors

   Plasma and Fusion Research, 2021

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   @article{hayashi2021observation,
     title = {Observation of Arc Trails with Significant Damage due to Glow Discharge Wall Conditioning in the Large Helical Device},
     author = {Hayashi, Yuki and Masuzaki, Suguru and Motojima, Gen and Hwangbo, Dogyun and Fujiwara, Yutaka and Zhao, Mingzhong and Group, LHD Experiment and others},
     journal = {Plasma and Fusion Research},
     volume = {16},
     pages = {1202061--1202061},
     year = {2021},
     publisher = {The Japan Society of Plasma Science and Nuclear Fusion Research},
     doi = {10.1016/j.nme.2020.100843},
   }

4. Phys. Scr.

   Plasma-wall interaction studies in W7-X: main results from the recent divertor operations

   CP Dhard, S Brezinsek, M Mayer, and 8 more authors

   Physica Scripta, 2021

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   @article{dhard2021plasma,
     title = {Plasma-wall interaction studies in {W7-X}: main results from the recent divertor operations},
     author = {Dhard, CP and Brezinsek, S and Mayer, M and Naujoks, D and Masuzaki, S and Zhao, D and Yi, R and Oelmann, J and Schmid, K and Romazanov, J and others},
     journal = {Physica Scripta},
     volume = {96},
     number = {12},
     pages = {124059},
     year = {2021},
     publisher = {IOP Publishing},
     doi = {10.1016/j.nme.2020.100843},
   }

5. Plasma Fusion Res.

   Influence of Nitrogen Ratio on Plasma Detachment during Combined Seeding with Hydrogen on Divertor Simulation Experiment of GAMMA 10/PDX

   Hiroki Gamo, Naomichi Ezumi, Tsukasa Sugiyama, and 8 more authors

   Plasma and Fusion Research, 2021

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   @article{gamo2021influence,
     title = {Influence of Nitrogen Ratio on Plasma Detachment during Combined Seeding with Hydrogen on Divertor Simulation Experiment of {GAMMA 10/PDX}},
     author = {Gamo, Hiroki and Ezumi, Naomichi and Sugiyama, Tsukasa and Nojiri, Kunpei and Kondo, Ayane and Hirata, Mafumi and Kohagura, Junko and Yoshikawa, Masayuki and Nakashima, Yousuke and Hwangbo, Dogyun and others},
     journal = {Plasma and Fusion Research},
     volume = {16},
     pages = {2402041--2402041},
     year = {2021},
     publisher = {The Japan Society of Plasma Science and Nuclear Fusion Research},
     doi = {10.1585/pfr.16.2402041},
   }

6. Plasma Fusion Res.

   Enhancement of Arc Ignition on Tungsten in Helium Plasmas with Impurity Gases

   Rongshi Zhang, Shin Kajita, Dogyun Hwangbo, and 2 more authors

   Plasma and Fusion Research, 2021

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   @article{zhang2021enhancement,
     title = {Enhancement of Arc Ignition on Tungsten in Helium Plasmas with Impurity Gases},
     author = {Zhang, Rongshi and Kajita, Shin and Hwangbo, Dogyun and Tanaka, Hirohiko and Ohno, Noriyasu},
     journal = {Plasma and Fusion Research},
     volume = {16},
     pages = {2405069--2405069},
     year = {2021},
     publisher = {The Japan Society of Plasma Science and Nuclear Fusion Research},
     doi = {10.1585/pfr.16.2405069},
   }

7. J. Nucl. Mater

   The effects of impurity gas seeding on the growth of fuzzy tungsten

   Patrick McCarthy, Dogyun Hwangbo, Shin Kajita, and 1 more author

   Journal of Nuclear Materials, 2021

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   @article{mccarthy2021effects,
     title = {The effects of impurity gas seeding on the growth of fuzzy tungsten},
     author = {McCarthy, Patrick and Hwangbo, Dogyun and Kajita, Shin and Bradley, James W},
     journal = {Journal of Nuclear Materials},
     volume = {556},
     pages = {153125},
     year = {2021},
     publisher = {North-Holland},
     doi = {10.1016/j.jnucmat.2021.153125},
   }

2020

1. Plasma Fusion Res.

   Inspection of Arc Trails formed in stellarator/heliotron devices W7-X and LHD

   Dogyun Hwangbo, Shin Kajita, Chandra Prakash Dhard, and 7 more authors

   Plasma and Fusion Research, 2020

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   @article{hwangbo2020inspection,
     title = {Inspection of Arc Trails formed in stellarator/heliotron devices {W7-X} and {LHD}},
     author = {Hwangbo, Dogyun and Kajita, Shin and Dhard, Chandra Prakash and Tokitani, Masayuki and Krause, Marco and Naujoks, Dirk and Masuzaki, Suguru and Klose, S{\"o}ren and Ohno, Noriyasu and others},
     journal = {Plasma and Fusion Research},
     volume = {15},
     pages = {2402012--2402012},
     year = {2020},
     publisher = {The Japan Society of Plasma Science and Nuclear Fusion Research},
     doi = {10.1585/pfr.15.2402012},
   }

2. Plasma Sources Sci. Technol.

   Unipolar arc plasmas on nanostructured tungsten surfaces under perpendicular magnetic field

   Dogyun Hwangbo, Daisuke Nishijima, Shin Kajita, and 2 more authors

   Plasma Sources Science and Technology, 2020

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   @article{hwangbo2020unipolar,
     title = {Unipolar arc plasmas on nanostructured tungsten surfaces under perpendicular magnetic field},
     author = {Hwangbo, Dogyun and Nishijima, Daisuke and Kajita, Shin and Doerner, Russell P and Ohno, Noriyasu},
     journal = {Plasma Sources Science and Technology},
     volume = {29},
     number = {12},
     pages = {125015},
     year = {2020},
     publisher = {IOP Publishing},
     doi = {10.1088/1361-6595/abc817},
   }

3. Phys. Scr.

   Inspection of W7-X plasma-facing components after the operation phase OP1.2b: observations and first assessments

   CP Dhard, S Äkäslompolo, M Balden, and 8 more authors

   Physica Scripta, 2020

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   @article{dhard2020inspection,
     title = {Inspection of {W7-X} plasma-facing components after the operation phase {OP1.2b}: observations and first assessments},
     author = {Dhard, CP and {\"A}k{\"a}slompolo, S and Balden, M and Baldzuhn, J and Biedermann, C and Br{\"a}uer, T and Brezinsek, S and Endler, M and Hayashi, Y and Hwangbo, D and others},
     journal = {Physica Scripta},
     volume = {2020},
     number = {T171},
     pages = {014033},
     year = {2020},
     publisher = {IOP Publishing},
     doi = {10.1088/1402-4896/ab4b3f},
   }

4. Nucl. Fusion

   Enhanced fuzzy tungsten growth in the presence of tungsten deposition

   Patrick McCarthy, Dogyun Hwangbo, Matthew Bilton, and 2 more authors

   Nuclear Fusion, 2020

   DOI Bib HTML

   

   @article{mccarthy2020enhanced,
     title = {Enhanced fuzzy tungsten growth in the presence of tungsten deposition},
     author = {McCarthy, Patrick and Hwangbo, Dogyun and Bilton, Matthew and Kajita, Shin and Bradley, James W},
     journal = {Nuclear Fusion},
     volume = {60},
     number = {2},
     pages = {026012},
     year = {2020},
     publisher = {IOP Publishing},
     doi = {10.1088/1741-4326/ab6060},
   }

5. Nucl. Fusion

   Dynamics of the changes in the parameters of the arc plasma during the destruction of a helium-induced tungsten fuzz by arc pulses

   SA Barengolts, D Hwangbo, S Kajita, and 7 more authors

   Nuclear Fusion, 2020

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   @article{barengolts2020dynamics,
     title = {Dynamics of the changes in the parameters of the arc plasma during the destruction of a helium-induced tungsten fuzz by arc pulses},
     author = {Barengolts, SA and Hwangbo, D and Kajita, S and Ohno, N and Frolova, VP and Nikolaev, AG and Oks, EM and Shmelev, DL and Tsventoukh, MM and Yushkov, G Yu},
     journal = {Nuclear Fusion},
     volume = {60},
     number = {4},
     pages = {044001},
     year = {2020},
     publisher = {IOP Publishing},
     doi = {10.1088/1741-4326/ab73c3},
   }

6. Phys. Scr.

   Helium irradiation effects on the surface modification and recrystallization of tungsten

   Aneeqa Khan, Gregory De Temmerman, Shin Kajita, and 8 more authors

   Physica Scripta, 2020

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   @article{khan2020helium,
     title = {Helium irradiation effects on the surface modification and recrystallization of tungsten},
     author = {Khan, Aneeqa and De Temmerman, Gregory and Kajita, Shin and Greuner, Henri and Balden, M and Hunger, K and Ohno, N and Hwangbo, D and Tomita, Y and Tokitani, M and others},
     journal = {Physica Scripta},
     volume = {2020},
     number = {T171},
     pages = {014050},
     year = {2020},
     publisher = {IOP Publishing},
     doi = {10.1088/1402-4896/ab52c6},
   }

7. Nucl. Mater. Energy

   Size distribution of nano-tendril bundles with various additional impurity gases

   Rongshi Zhang, Dogyun Hwangbo, Shin Kajita, and 2 more authors

   Nuclear Materials and Energy, 2020

   DOI Bib HTML

   

   @article{zhang2020size,
     title = {Size distribution of nano-tendril bundles with various additional impurity gases},
     author = {Zhang, Rongshi and Hwangbo, Dogyun and Kajita, Shin and Tanaka, Hirohiko and Ohno, Noriyasu},
     journal = {Nuclear Materials and Energy},
     volume = {25},
     pages = {100843},
     year = {2020},
     publisher = {Elsevier},
     doi = {10.1016/j.nme.2020.100843},
   }