Practical formula for Mach number probe diagnostics in weakly magnetized plasmas
- 25 March 2005
- journal article
- research article
- Published by AIP Publishing in Physics of Plasmas
- Vol. 12 (4) , 044504
Abstract
A practical formula for Mach number probe diagnostics in unmagnetized and weakly magnetized plasmas is proposed. The unmagnetized theoretical models are modified so as to make them applicable to the different shapes of Mach number probes by including the broadening of the collection angle and are extended to the weakly magnetized case. The calculated Mach numbers based on the modified expression show good agreement with each other regardless of the probe shape geometry, and are revealed to be consistent with the spectroscopic results. Applicability of the modified expression to the supersonic flow when using the Hutchinson’s model and in the existence of the multidirectional flows is numerically examined.Keywords
This publication has 17 references indexed in Scilit:
- Investigation of Mach probe geometry effects in weakly magnetized plasmasJournal of Nuclear Materials, 2005
- Ion collection by a sphere in a flowing plasma: 3. Floating potential and drag forcePlasma Physics and Controlled Fusion, 2004
- Plasma Flow Measurements in Linear Divertor Simulator MAP‐II Using Mach Probe and Directional Langmuir ProbeContributions to Plasma Physics, 2004
- Ion collection by a sphere in a flowing plasma: 2. non-zero Debye lengthPlasma Physics and Controlled Fusion, 2003
- Measurements of Ion Temperature and Flow Velocity in Divertor Simulator MAP-II from Hydrogenic Helium Line EmissionJournal of Plasma and Fusion Research, 2003
- Ion collection by a sphere in a flowing plasma: I. QuasineutralPlasma Physics and Controlled Fusion, 2002
- Plasma Flow Measurement Using Directional Langmuir Probe Under Weakly Ion-Magnetized ConditionsJournal of the Physical Society of Japan, 2001
- Measurements of Plasma Flow Velocity in DC Plasma Jets Using Perpendicular and Parallel Mach ProbesJapanese Journal of Applied Physics, 1995
- Presheath profiles in simulated tokamak edge plasmasJournal of Nuclear Materials, 1989
- Universality classes for deterministic surface growthPhysical Review A, 1988