CORE TURBULENCE AND TRANSPORT STUDIES ON THE TEXAS EXPERIMENTAL TOKAMAK
文献类型：期刊论文
| 作者 | BRAVENEC, RV ; GENTLE, KW ; RICHARDS, B ; ROSS, DW ; SING, DC ; WOOTTON, AJ ; BROWER, DL ; LUHMANN, NC ; PEEBLES, WA ; YU, CX ; CROWLEY, TP ; HEARD, JW ; HICKOK, RL ; SCHOCH, PM ; YANG, XZ |
| 刊名 | PHYSICS OF FLUIDS B-PLASMA PHYSICS
 |
| 出版日期 | 1992 |
| 卷号 | 4期号:7页码:2127 |
| 关键词 | ION BEAM PROBE CONFINEMENT |
| ISSN号 | 0899-8221 |
| 通讯作者 | BRAVENEC, RV: UNIV TEXAS,FUS RES CTR,AUSTIN,TX 78712, USA. |
| 中文摘要 | Recent experiments on the Texas Experimental Tokamak (TEXT) [Plasma Phys. Controlled Fusion 27, 1335 (1985)] have focused on identifying the drives and transport significance of the turbulence in the interior of discharges in the neo-Alcator confinement regime. Far-infrared (FIR) scattering consistently observes density fluctuations indicative of electron drift waves, i. e., omega(k) approximately omega(e)* + k(theta)v(E), where v(E) = - E(r)/B (the electron diamagnetic frequency Doppler-shifted by the E X B poloidal plasma rotation) and an amplitude that scales inversely with the density scale length L(n). Although consistent with scattering on the power-weighted frequency omegaBAR, heavy-ion beam probe (HIBP) data typically indicate k(theta)rho(s)BAR < 0.1 such that omegaBAR much greater than omega(e)*BAR + k(theta)v(E) and nBAR/n(e) much less than 1/k(theta)L(n)BAR. Experiments with a modulated gas feed and/or electron-cyclotron resonance heating (ECRH) seem to rule out del T(e) as the turbulent drive, although little evidence for del n(e) is apparent either. In fact, the interior fluctuations seen by the HIBP seem to depend more on edge conditions than local gradients. The quasilinear fluxes due to dissipative trapped electrons are found to be sufficient to account for the equilibrium fluxes in the region of low collisionality (v(e)* much less than 1) for a drift-wave spectrum (k(theta)rho(s)BAR approximately 0.3), but not for the low wave numbers seen by the HIBP. While the estimates with k(theta)rho(s)BAR approximately 0.3 predict the scaling of the electron energy flux over a range of discharge conditions with v(e)* much less than 1, the model seems unable to predict the magnitude (or phase) of the perturbed particle flux during modulated gas feed experiments. In the outer regions of the plasma where v(e)* greater than or similar to 1, the calculated quasilinear fluxes are inadequate, even including untrapped particles. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/35192]  |
| 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 | BRAVENEC, RV,GENTLE, KW,RICHARDS, B,et al. CORE TURBULENCE AND TRANSPORT STUDIES ON THE TEXAS EXPERIMENTAL TOKAMAK[J]. PHYSICS OF FLUIDS B-PLASMA PHYSICS,1992,4(7):2127. |
| APA | BRAVENEC, RV.,GENTLE, KW.,RICHARDS, B.,ROSS, DW.,SING, DC.,...&YANG, XZ.(1992).CORE TURBULENCE AND TRANSPORT STUDIES ON THE TEXAS EXPERIMENTAL TOKAMAK.PHYSICS OF FLUIDS B-PLASMA PHYSICS,4(7),2127. |
| MLA | BRAVENEC, RV,et al."CORE TURBULENCE AND TRANSPORT STUDIES ON THE TEXAS EXPERIMENTAL TOKAMAK".PHYSICS OF FLUIDS B-PLASMA PHYSICS 4.7(1992):2127. |
入库方式： OAI收割
来源：物理研究所
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