摘要:
The invention provides a plasma equipment which is advantageous in that the suscepter impedance is small, the dependence on the frequency is low, the power consumption efficiency is high, the film forming speed is faster with comparison with the conventional plasma equipment, and the film quality is high. Metalplates (80a, 80b) AC short between a chamber wall (10) and a shield (12) of an electrode of the same DC potential as the chamber.
摘要:
The invention provides a plasma equipment which is advantageous in that the suscepter impedance is small, the dependence on the frequency is low, the power consumption efficiency is high, the film forming speed is faster with comparison with the conventional plasma equipment, and the film quality is high. Metalplates (80a, 80b) AC short between a chamber wall (10) and a shield (12) of an electrode of the same DC potential as the chamber.
摘要:
The invention provides a plasma equipment which is advantageous in that the suscepter impedance is small, the dependence on the frequency is low, the power consumption efficiency is high, the film forming speed is faster with comparison with the conventional plasma equipment, and the film quality is high. Metal plates (80a, 80b) AC short between a chamber wall (10) and a shield (12) of an electrode of the same DC potential as the chamber.
摘要:
The invention provides a plasma equipment which is advantageous in that the suscepter impedance is small, the dependence on the frequency is low, the power consumption efficiency is high, the film forming speed is faster with comparison with the conventional plasma equipment, and the film quality is high. Metal plates (80a, 80b) AC short between a chamber wall (10) and a shield (12) of an electrode of the same DC potential as the chamber.
摘要:
A second housing whose center portion is depressed and whose end portion around the center portion is formed like a visor is arranged around a first housing whose center portion is depressed and whose end portion around the center portion is formed like a visor, and a hollow portion is formed between the first housing and the second housing by sandwiching a packing between the end portions of the housings. Further, degassed water for preventing empty heating is filled in the hollow portion, and an ultrasonic transducer is placed on the surface of the center portion of the first housing. A weight for preventing the vibration of the wall is provided on the wall surface of the second housing. Since the vibration of the wall of the housing is suppressed by the weight, vibration energy returns toward the bottom surface of the center of the housing through water and is radiated from the bottom surface efficiently as ultrasonic waves.
摘要:
A second housing (12) whose center portion (12a) is depressed and whose end portion (12b) around the center portion (12a) is formed like a visor is arranged around a first housing (11) whose center portion (11a) is depressed and whose end portion (11b) around the center portion (11a) is formed like a visor, and a hollow portion (14) is formed between the first housing (11) and the second housing (12) by sandwiching a packing (13) between the end portions (11b,12b) of the housings (11,12). Further, degassed water (15) for preventing empty heating is filled in the hollow portion (14), and an ultrasonic transducer (16) is placed on the surface of the center portion (11a) of the first housing (11). A weight (17) for preventing the vibration of the wall (12c) is provided on the wall surface of the second housing (12). Since the vibration of the wall (12c) of the housing (12) is suppressed by the weight (17), vibration energy returns toward the bottom surface of the center of the housing (12) through water and is radiated from the bottom surface efficiently as ultrasonic waves.