Abstract
Work function of a plasma grid in a cesium seeded negative ion source was measured by Las photo-emission technique. We have investigated the relation between the work function and the H{sup -} ion current as well as the temperature of the plasma grid. Changing the position of the Laser incidence, we found that a uniform cesium layer was formed over the plasma gird by continuous arc discharge. The work function was decreased with temperature rise of the plasma grid. The minimum work function was estimated to be 1.75 eV at 260degC. Dependence of the H{sup -} ion current on the work function was investigated in the JAERI Multi-Ampere H{sup -} ion source. As a result, it was confirmed that the H{sup -} ion current increased rapidly as the work function decreased. When the H{sup -} ion current was the maximum, the work function was found to be about 1.8 eV. These dependence agree with H{sup -} ion current rise induced by cesium seeding. (author).
Suzuki, Yasuo;
Hanada, Masaya;
Okumura, Yoshikazu;
Tanaka, Masanobu
[1]
- Japan Atomic Energy Research Inst., Naka, Ibaraki (Japan). Naka Fusion Research Establishment
Citation Formats
Suzuki, Yasuo, Hanada, Masaya, Okumura, Yoshikazu, and Tanaka, Masanobu.
Measurement of work function of a plasma grid in a cesium seeded negative ion source.
Japan: N. p.,
1992.
Web.
Suzuki, Yasuo, Hanada, Masaya, Okumura, Yoshikazu, & Tanaka, Masanobu.
Measurement of work function of a plasma grid in a cesium seeded negative ion source.
Japan.
Suzuki, Yasuo, Hanada, Masaya, Okumura, Yoshikazu, and Tanaka, Masanobu.
1992.
"Measurement of work function of a plasma grid in a cesium seeded negative ion source."
Japan.
@misc{etde_10123113,
title = {Measurement of work function of a plasma grid in a cesium seeded negative ion source}
author = {Suzuki, Yasuo, Hanada, Masaya, Okumura, Yoshikazu, and Tanaka, Masanobu}
abstractNote = {Work function of a plasma grid in a cesium seeded negative ion source was measured by Las photo-emission technique. We have investigated the relation between the work function and the H{sup -} ion current as well as the temperature of the plasma grid. Changing the position of the Laser incidence, we found that a uniform cesium layer was formed over the plasma gird by continuous arc discharge. The work function was decreased with temperature rise of the plasma grid. The minimum work function was estimated to be 1.75 eV at 260degC. Dependence of the H{sup -} ion current on the work function was investigated in the JAERI Multi-Ampere H{sup -} ion source. As a result, it was confirmed that the H{sup -} ion current increased rapidly as the work function decreased. When the H{sup -} ion current was the maximum, the work function was found to be about 1.8 eV. These dependence agree with H{sup -} ion current rise induced by cesium seeding. (author).}
place = {Japan}
year = {1992}
month = {Nov}
}
title = {Measurement of work function of a plasma grid in a cesium seeded negative ion source}
author = {Suzuki, Yasuo, Hanada, Masaya, Okumura, Yoshikazu, and Tanaka, Masanobu}
abstractNote = {Work function of a plasma grid in a cesium seeded negative ion source was measured by Las photo-emission technique. We have investigated the relation between the work function and the H{sup -} ion current as well as the temperature of the plasma grid. Changing the position of the Laser incidence, we found that a uniform cesium layer was formed over the plasma gird by continuous arc discharge. The work function was decreased with temperature rise of the plasma grid. The minimum work function was estimated to be 1.75 eV at 260degC. Dependence of the H{sup -} ion current on the work function was investigated in the JAERI Multi-Ampere H{sup -} ion source. As a result, it was confirmed that the H{sup -} ion current increased rapidly as the work function decreased. When the H{sup -} ion current was the maximum, the work function was found to be about 1.8 eV. These dependence agree with H{sup -} ion current rise induced by cesium seeding. (author).}
place = {Japan}
year = {1992}
month = {Nov}
}