PATH INTEGRAL EFFECTS IN HEAVY-ION BEAM PROBE DENSITY-MEASUREMENTS - A COMPARISON OF SIMULATION RESULTS AND EXPERIMENTAL-DATA
文献类型：期刊论文
| 作者 | HEARD, JW ; CROWLEY, TP ; ROSS, DW ; SCHOCH, PM ; HICKOK, RL ; ZHANG, BZ |
| 刊名 | REVIEW OF SCIENTIFIC INSTRUMENTS
 |
| 出版日期 | 1993 |
| 卷号 | 64期号:4页码:1001 |
| 关键词 | TEXT |
| ISSN号 | 0034-6748 |
| 通讯作者 | HEARD, JW (reprint author), RENSSELAER POLYTECH INST,DEPT ELECTR COMP & SYST ENGN,TROY,NY 12180, USA. |
| 中文摘要 | The heavy ion beam probe (HIBP) signal used to measure local density fluctuations in a plasma is also sensitive to modulation due to density fluctuations along the entire beam trajectory. A modulation model of the HIBP experiment on the Texas experimental tokamak (TEXT) is presented. The model includes profile information for equilibrium and fluctuating parameters, allows for differences in the radial and poloidal characteristics of the fluctuations, and uses realistic beam trajectories. It is shown that profile effects are important in understanding HIBP modulation and that modulation does not simply increase with line average density in TEXT. In addition, calculations of the modulation effects show that only the terms which correspond to in-phase signals at the two sample volumes are significant. Therefore, the modulation effects can be approximated with a real parameter. Under these assumptions, it is shown that only long correlation length, low wave number modes will contribute significantly to the corruption of the measured signal. The calculation of the modulation effects are consistent with the experiment. It is illustrated herein how the measured data can be used to set limits on the modulation signal without doing extensive model calculations. These limits show that there must be long wavelength fluctuations in the plasma. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50600]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | HEARD, JW,CROWLEY, TP,ROSS, DW,et al. PATH INTEGRAL EFFECTS IN HEAVY-ION BEAM PROBE DENSITY-MEASUREMENTS - A COMPARISON OF SIMULATION RESULTS AND EXPERIMENTAL-DATA[J]. REVIEW OF SCIENTIFIC INSTRUMENTS,1993,64(4):1001. |
| APA | HEARD, JW,CROWLEY, TP,ROSS, DW,SCHOCH, PM,HICKOK, RL,&ZHANG, BZ.(1993).PATH INTEGRAL EFFECTS IN HEAVY-ION BEAM PROBE DENSITY-MEASUREMENTS - A COMPARISON OF SIMULATION RESULTS AND EXPERIMENTAL-DATA.REVIEW OF SCIENTIFIC INSTRUMENTS,64(4),1001. |
| MLA | HEARD, JW,et al."PATH INTEGRAL EFFECTS IN HEAVY-ION BEAM PROBE DENSITY-MEASUREMENTS - A COMPARISON OF SIMULATION RESULTS AND EXPERIMENTAL-DATA".REVIEW OF SCIENTIFIC INSTRUMENTS 64.4(1993):1001. |
入库方式： OAI收割
来源：物理研究所
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