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Study of the pellet ablation cloud using the tomography technique for two-directional simultaneous photography in GAMMA 10/PDX

Published online by Cambridge University Press:  05 April 2024

M. Yoshikawa Open the ORCID record for M. Yoshikawa [Opens in a new window] ,
Y. Nakashima ,
J. Kohagura ,
Y. Shima ,
S. Kobayashi Open the ORCID record for S. Kobayashi [Opens in a new window] ,
R. Minami ,
N. Ezumi Open the ORCID record for N. Ezumi [Opens in a new window]  and
M. Sakamoto Open the ORCID record for M. Sakamoto [Opens in a new window]
M. Yoshikawa*
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
Y. Nakashima
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
J. Kohagura
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
Y. Shima
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
S. Kobayashi
Affiliation:
Institute of Advanced Energy, Kyoto University, Uji 611-0011, Japan
R. Minami
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
N. Ezumi
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
M. Sakamoto
Affiliation:
Plasma Research Center, University of Tsukuba, Tsukuba 305-8577, Japan
*
†Email address for correspondence: yosikawa@prc.tsukuba.ac.jp
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Abstract

The pellet ablation mechanism is an interesting subject for plasma fuelling in fusion plasmas. In GAMMA 10/PDX, pellet injection experiments for higher density plasma production are planned to conduct detached plasma experiments in the higher density plasma condition. We measured the pellet ablation cloud by using the two-directional simultaneous photography system in GAMMA 10/PDX. The tomography reconstruction technique was used for considering the pellet trajectory in the plasma and pellet ablation. The three-dimensional pellet trajectory and pellet ablation images in the plasma were clearly obtained for the first time, to the best of our knowledge.

Keywords

pellet ablation cloudtwo-directionalhigh-speed cameraGAMMA 10/PDX
Type
Research Article
Information
Journal of Plasma Physics , Volume 90 , Issue 2 , April 2024 , 905900208
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Copyright
Copyright © The Author(s), 2024. Published by Cambridge University Press

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