| Research Collaborator |
KAMIO Shuji 自然科学研究機構, 核融合科学研究所, 助教 (80795525)
II Toru 東京大学, 工学系研究科, 博士後期課程
KUWAHATA Akihiro 東京大学, 工学系研究科, 博士後期課程
ITAGAKI Hirotomo 東京大学, 新領域創成科学研究科, 博士後期課程
WATANABE Takenori 東京大学, 新領域創成科学研究科, 博士後期課程
YAMASAKI Kotaro 東京大学, 工学系研究科, 博士後期課程
|
|---|
| Budget Amount *help |
¥24,180,000 (Direct Cost: ¥18,600,000、Indirect Cost: ¥5,580,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2011: ¥8,710,000 (Direct Cost: ¥6,700,000、Indirect Cost: ¥2,010,000)
Fiscal Year 2010: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
|
|---|
| Research Abstract |
Low frequency waves are excited in the high beta region of magnetically confined plasmas by magnetic reconnection during plasma merging process. These waves partly contribute to the conversion from magnetic energy to ion thermal energy. When the reconnection includes significant guide magnetic field perpendicular to the reconnection magnetic field, monotonic large-amplitude waves are excited as kinetic Alven waves. However, these waves are not dominant factors providing the observed ion heating. On the other hand, when there is no guide field, very low fewquency waves are globally excited. These shear Alfven waves directly drive ion flows and eventually provide conversion from magnetic to ion thermal energy. It is concluded that these very low frequency waves work for the heating method for high beta plasmas.
|
