Observation of various material surfaces irradiated and cratered with focused ArF laser lights

Koichi Kasuya; Waldemar Mroz; Artur Prokopiuk; Takayoshi Notimatsu; Yasukazu Izawa; Sadao Nakai

doi:10.1117/12.611328

23 March 2005 Observation of various material surfaces irradiated and cratered with focused ArF laser lights

Koichi Kasuya, Waldemar Mroz, Artur Prokopiuk, Takayoshi Notimatsu, Yasukazu Izawa, Sadao Nakai

Proceedings Volume 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers; (2005) https://doi.org/10.1117/12.611328
Event: XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, 2004, Prague, Czech Republic

Abstract

It is necessary to know the ablation rates of various material surfaces under the irradiation of intense UV laser lights, as one of the ablating beams, when we design the future inertial fusion reacotrs driven by big lasers. So that, we irradiated various materials with a UV laser light. The laser wavelength, the pulse width and the maximum repetition rate were 193 nm, 20 ns, and 50 Hz. Irradiated materials were LiPb, Pb as the wet wall candidates of the inertial fusion reactors, while W, C, Al₂O₃, SiC and SiC-Si composite material as the dry wall candidates were also irradiated. The changes of teh irradiated surface conditions under different irradiation conditions were observed with three different kinds of optical diagnostic tools. The structures of the produced craters were investigated precisely. We could know how strong the tungsten was against such laser ablations, compared with LiPb or Pb etc..

Citation Download Citation

Koichi Kasuya, Waldemar Mroz, Artur Prokopiuk, Takayoshi Notimatsu, Yasukazu Izawa, and Sadao Nakai "Observation of various material surfaces irradiated and cratered with focused ArF laser lights", Proc. SPIE 5777, XV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (23 March 2005); https://doi.org/10.1117/12.611328

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