書誌事項
- タイトル別名
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- Generation of Inductively Coupled Thermal Plasma with Pulse Modulated Mode
- パルス ヘンチョウ サレタ コウシュウハ ユウドウ ネツ プラズマ ノ ハッセイ
- Generation of pulse‐modulated high‐frequency induction thermal plasma
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We have newly designed a thermal plasma system which can be operated with a pulse modulated mode for the control of plasma power in the time domain and for creating non-equilibrium effects such as fast heating or quenching of the plasma to produce new functional materials at a high rate. The system consists of a solid state power supply with a maximum peak power of 30 kW (20 kW continuous), an induction plasma torch with a 13-turns coil of 55 mm diameter and 85 mm length and a vacuum chamber. The pulse modulated plasma was successfully produced at a plasma power of 11 kW and a pressure from 27 kPa to 101 kPa (from 200 to 760 Torr). The on and off time were each 5 ms, which corresponds to a duty factor of 50%. Measurements were carried out on the time variation of the spectral lines emitted from the ArI species. The dynamic behavior of the plasma temperature in an on-off cycle was estimated by the Boltzman plot method as an average value for eight emission lines. The excitation temperature of the ArI atom changed periodically from 5000 K to 14000 K during the cycle at 27 kPa. The magnitude of this temperature change was weakened at higher pressure of 101 kPa. The minimum duty factor to sustain the pulse modulated thermal plasma was found to be 30%, which corresponds to the pulse off time of 10 to 12 ms.
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 63 (1), 2-8, 1999
公益社団法人 日本金属学会
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詳細情報
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- CRID
- 1390282681467833472
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- NII論文ID
- 10002548364
- 10008218372
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- NII書誌ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
- http://id.crossref.org/issn/00214876
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- NDL書誌ID
- 4636802
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可