[16a-K506-1~10] 3.6 Laser processing

11:15 AM - 11:30 AM JST(2:15 AM - 2:30 AM UTC)

[16a-K506-9] Developing a technique to measure the velocity of contaminated fragments by nanosecond pulsed laser decontamination

Atsushi Kosuge¹, Kota Ando², Keisuke Yamamoto³, 〇Takashi Nakajima³ (1.JAEA, 2.JASRI, 3.Kyoto Univ.)

Keywords:

laser ablation,laser scattering,velocity measurement

Laser decontamination is one of the most promising methods to efficiently and safely remove the large amount of radioactive waste generated during the decommissioning of nuclear reactors. In this presentation, we will report on a method for measuring the velocity of contaminated dust particles using laser scattering. Analysis of laser scattering images revealed that the velocity decreases as the distance from the target increases, and that the velocity is slower when the pulse width is long. The velocity of the slow cloud-like dust particles is about 0.07 m/s.