Charge-exchange neutral particle measurements on electron cyclotron resonance heating experiments in hot-ion-mode plasmas of the GAMMA 10 tandem mirror | Zendy

Y. Nakashima | Zendy; Yumi Hasegawa | Zendy; Masafumi Shoji | Zendy; S. Kobayashi | Zendy; T. Saito | Zendy; Y. Kiwamoto | Zendy; T. Cho | Zendy; A. Mase | Zendy; M. Ichimura | Zendy; A. Itakura | Zendy; M. Hirata | Zendy; J. Kohagura | Zendy; Khairul Islam | Zendy; Motoi Oishi | Zendy; Masayuki Yoshikawa | Zendy; T. Tamano | Zendy; K. Yatsu | Zendy

Open Access

Charge-exchange neutral particle measurements on electron cyclotron resonance heating experiments in hot-ion-mode plasmas of the GAMMA 10 tandem mirror

Author(s) -

Y. Nakashima,

Yumi Hasegawa,

Masafumi Shoji,

S. Kobayashi,

T. Saito,

Y. Kiwamoto,

T. Cho,

A. Mase,

M. Ichimura,

A. Itakura,

M. Hirata,

J. Kohagura,

Khairul Islam,

Motoi Oishi,

Masayuki Yoshikawa,

T. Tamano,

K. Yatsu

Publication year - 1999

Publication title -

review of scientific instruments

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.605

H-Index - 165

eISSN - 1089-7623

pISSN - 0034-6748

DOI - 10.1063/1.1149287

Subject(s) - atomic physics , plasma , ion , neutral particle , electron cyclotron resonance , electron temperature , materials science , plasma diagnostics , electron , langmuir probe , physics , nuclear physics , quantum mechanics

Charge-exchange (C–X) neutral particle measurements have been carried out in hot-ion-mode plasmas of the GAMMA 10 tandem mirror. In the present experiment, a microwave power of 40 kW in 28 GHz is injected toward a second harmonic ECR layer located in the vicinity of the ICR layer at the central region and the radial profiles of ion temperatures determined from the energy spectrum of the C–X neutrals by using a neutral particle energy analyzer (NPA) are investigated from the viewpoint of ion energy balance. At the onset of the ECRH pulse, a remarkable increase of C–X neutral flux with high energy (few keV to few tens keV) is observed with NPA and the resultant ion temperature on the plasma axis is found to increase from 2.5 to 5.0 keV at the electron line density of 3 × 1013 cm – 2. Based on the measured plasma parameters, radial profiles of ion-energy losses due to classical processes are evaluated and ECRH in the central region is confirmed to reduce the energy loss due to electron drag significantly in the core-plasma region

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research