CORRELATION OF SURFACE PRODUCTION OF NEGATIVE-IONS AND THE WORK FUNCTION MEASURED BY LASER-INDUCED PHOTOELECTRON CURRENT

被引：11

作者：

SASAO, M

OKABE, Y

FUJITA, J

WADA, M

YAMAOKA, H

RAMOS, HJ

机构：

[1] DOSHISHA UNIV,DEPT ELECTR,KYOTO 602,JAPAN

[2] INST PHYS & CHEM RES,WAKO,SAITAMA 351,JAPAN

[3] UNIV PHILIPPINES,NATL INST PHYS,LOS BANOS 3720,PHILIPPINES

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 1990年 / 61卷 / 01期

关键词：

D O I：

10.1063/1.1141258

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Dynamic change of a negative-ion production surface in an ion source due to cesium introduction and plasma ion bombardment has been studied by simultaneous measurements of photoelectron current by laser irradiation and negative-ion current. Strong dependences of production rates for negative ions by desorption (H-) and by sputtering (Au-) on the work function monitored by photoelectron current were observed. Peaks on mass spectra corresponding to He- were observed only when the monitoring signal indicated that the work function of a molybdenum-cesium surface was near the minimum.

引用

页码：418 / 420

页数：3

共 6 条

[1] A VERSATILE HIGH-INTENSITY PLASMA SPUTTER HEAVY NEGATIVE-ION SOURCE [J].