[23p-B102-1~8] 8.3 Plasma nanotechnology

[23p-B102-1] Electric Charging of Feedstock Particles with Electron Emission and Its Influence on Heating Rate of Feedstock Particles for Nanoparticle Synthesis in Pulse-Modulated Induction Thermal Plasmas with Intermittent Feedstock Feeding

〇Yasunori Tanaka¹, Ryudai Furukawa¹, Yurina Nagase¹, Yusuke Nakano¹, Tatsuo Ishijima¹, Shiori Sueyasu², Shu Watanabe², Keitaro Nakamura² (1.Kanazawa Univ., 2.Nisshin Seifun Gr.)

Keywords:Nanoparticles, Inductively coupled thermal plasma, Mass production

In this report, the numerical simulation model for the `PMITP + TCFF method’, which is a method for synthesizing nanoparticles at high production rate, is newly considered for the charging effect and the effect on the heating during the feedstock feeding to PMITP. For charging, the ion flux and electron flux from the plasma were calculated based on orbital motion limited (OML) theory. The thermionic and secondary electron emission from feedstock particles were also taken into consideration. As a result, it was found that the particles have charge varying from negative to positive during their being heated, which influences heating effect on the particles.