| Project/Area Number |
20740324
|
|---|
| Research Category |
Grant-in-Aid for Young Scientists (B)
|
| Allocation Type | Single-year Grants |
|---|
| Research Field |
Plasma science
|
|---|
| Research Institution | Tokushima Bunri University |
|---|
Principal Investigator |
MATSUMOTO Yoshikatsu Tokushima Bunri University, 人間生活学部, 講師 (50441598)
|
|---|
| Project Period (FY) |
2008 – 2009
|
| Project Status |
Completed (Fiscal Year 2009)
|
| Budget Amount *help |
¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2009: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2008: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
|
|---|
| Keywords | プラズマ加熱 / イオン源 / 水素負イオン / 輸送 / ビーム引き出し |
|---|
| Research Abstract |
We calculate potential spatial structure at extraction region in a negative ion source with two dimensional Particle-In-Cell(PIC) method. It is confirmed that extraction electric field produced by high beam extraction voltage invades into the ion source plasma though a beam extraction hole. Besides, H^- extraction probability is calculated with H^- trajectory calculation in Monte Carlo method. Then, potential structure needed for the H^- extraction model is assumed by the calculation result of the PIC code. A calculation result with the extraction model is in good agreement with experimental result in H^- extraction probability. From some calculation results with the model, we conclude that potential structure for perpendicular direction to H^- beam axis is a key factor for H^- extraction from a negative ion source.
|
