Application of pulsed laser irradiation for removal of hydrogen retained in tungsten

Kentaro Hirata, Kenichiro Furumoto, Naoji Yamamoto, Tetsuo Tanabe

研究成果: Contribution to journalArticle査読

2 被引用数 (Scopus)

抄録

For the purpose of removal of tritium retained in tungsten (W), pulsed laser irradiation has been applied. The laser light used here was the fourth harmonic of Nd: YAG laser (wavelength; 266 nm, pulse width; 20 ps, pulse frequency; 10 Hz, laser energy up to 3 mJ/pulse). Samples were pure W plates and those saturated with D by D2+ ion implantation at room temperature with using a 2.5 keV ion gun. Released ions and molecules by the laser irradiation were measured by a time-of-flight mass spectrometer (TOFMS) and a quadrupole mass spectrometer (Q-mass), respectively. Ablation of W was observed by the laser irradiation with a deposited power density above 1.5 × 1011 W/cm2 (3 J/cm2/pulse) (an ablation threshold) and D removals below and above the ablation threshold were quite different. The most effective removal of tritium retained in W could be realized by the pulsed laser irradiation with the power density of just below the ablation threshold.

本文言語英語
ページ(範囲)298-301
ページ数4
ジャーナルJournal of Nuclear Materials
443
1-3
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

フィンガープリント

「Application of pulsed laser irradiation for removal of hydrogen retained in tungsten」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル