การออกแบบและการสร้างเครื่องกำเนิดพลาสมาแบบห้วงชนิดคู่ควบเหนี่ยวนำขนาด 1.4 กิโลจูล

• Main Author: สิทธิศักดิ์ ไชยสมบัติ
• Other Authors: รัฐชาติ มงคลนาวิน
• Format: Theses and Dissertations
• Language: Thai
• Published: จุฬาลงกรณ์มหาวิทยาลัย 2010
• Subjects: เครื่องกำเนิดพลาสมาแบบห้วงชนิดคู่ > การออกแบบและการสร้าง; เครื่องกำเนิดพลาสมา > การออกแบบและการสร้าง; Inductively coupled plasma device > Design and construction; Plasma generators > Design and construction
• Online Access: https://digiverse.chula.ac.th/Info/item/dc:34880
• Institution: Chulalongkorn University

A pulsed inductively coupled plasma device (PICP) is modified from a small fusion device. The PICP has been used in many applications as short pulse plasma generation such as taken to operate in the surface improvement of non-thermal materials. In this research, PICP device has been constructed which the properties of a PICP device were studied as well as the plasma dynamics and the plasma properties. These parameters are useful for future development and study of small fusion devices. Rogowski coil was used to measure the discharge current, maganetic proe was used to measure the position of plasma and the plasma velocity and optical spectrometer was used to measure plasma electron temperature. Results from the experiment show the energy stored of 1.4, 2.4 and 4.32 kJ in the capacitor bank produced the discharge current of 256, 336 and 430 kA, respectively. When the 1.4 kJ energy is stored in capacitor bank, the maximum average velocity of Ar, O₂ and N₂ okasna are 2,4x10⁴, 3.5x10⁴ and 4.2x10⁴ m/s, respectively there were measured at 3.46 - 1.46 cm. from the centre of quartz tube. The Experiment shows when the molecular mass, the operating pressure and the displacement increases, then the velocity of plasma decreases. Results from the experiment were compared with results from the simulation models in order to understand the dynamics particularly the corresponding results of the velocity of plasma and the displacement. Furthermore, results from the simulation models show the electron temperature decreases with the operating pressure increases. The frequency of discharge current also affected the velocity of plasma.