Affiliation:
1. Jiangxi Province Key Laboratory of Fusion and Information Control, Department of Physics, Institute of Fusion Energy and Plasma Application, Nanchang University , Nanchang 330031, China
Abstract
The Langmuir probe is one of the important diagnostic methods for measuring the edge plasma parameters of tokamak. A quadruple Langmuir probe (QLP) system was designed and built on the NanChang Spherical tokamak (NCST). The nonextensive single Langmuir probe (NSLP) theory [Qiu et al., Phys. Rev. E 101, 043206 (2020)] is extended to the nonextensive QLP (NQLP) theory, and then the electron temperature and electron number density of the edge plasma in NCST are obtained. The results show that the differences between the edge plasma parameters (electron temperature and number density) under the nonextensive statistics and those under the Maxwellian distribution are more than 50%, which indicates that the nonextensive parameters have an important influence on the actual measurement of QLP.
Funder
National Key Research and Development Program of China
Project of Scientific and Technological Innovation Base of Jiangxi Province
Key R&D Plan of Jiangxi Province
Natural Science Foundation of Jiangxi Province
Jiangxi Province Key Laboratory of Fusion and Information Control
Subject
General Physics and Astronomy