Discharge power dependence of carbon dust flux in a divertor simulator

Katsushi Nishiyama, Yasuhiko Morita, Giichiro Uchida, Daisuke Yamashita, Kunihiro Kamataki, Hyunwoong Seo, Naho Itagaki, Kazunori Koga, Masaharu Shiratani, Naoko Ashikawa, Suguru Masuzaki, Kiyohiko Nishimura, Akio Sagara, Sven Bornholdt, Holger Kersten

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

In fusion devices, dust particles are generated due to plasma-wall interactions and may cause safety or operational problems. Therefore it is necessary to clarify the generation and transport mechanisms of dust particles. Here we have measured energy influx from H2 plasmas toward a graphite target using a calorimetric probe and compared the results with the dust flux toward a dust collecting substrate set on the reactor wall. The dust flux decreases with increasing the energy influx. For the higher discharge power, the more number of dust particles tend to redeposit onto the graphite target due to the higher ion drag force and hence the dust flux toward the reactor wall becomes smaller. The results show that dust inventory depends strongly on energy influx to graphite divertor plates in fusion devices.

本文言語英語
ページ(範囲)S788-S791
ジャーナルJournal of Nuclear Materials
438
SUPPL
DOI
出版ステータス出版済み - 2013

All Science Journal Classification (ASJC) codes

  • 核物理学および高エネルギー物理学
  • 材料科学(全般)
  • 原子力エネルギーおよび原子力工学

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