MEASUREMENTS OF ELECTRODE TEMPERATURE EVOLUTION BY LASER-LIGHT REFLECTION

被引：9

作者：

KEMPKENS, H

BYSZEWSKI, WW

GREGOR, PD

LAPATOVICH, WP

机构：

[1] GTE Laboratories Incorporated, Waltham, MA 02254

来源：

JOURNAL OF APPLIED PHYSICS | 1990年 / 67卷 / 08期

关键词：

D O I：

10.1063/1.345314

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electrode temperature rise during the starting of an arc discharge lamp has been measured using the temperature-dependent reflection coefficient of He-Ne laser light from metal surfaces. Lock-in techniques permit temporal resolution of about 3 ms, which is adequate to resolve 60-Hz phenomena such as electrode heating during the ac cycle. Calibration curves obtained by pyrometric measurements of constant-current tungsten ribbon lamps were used to relate the observed signal during electrode heating to its temperature. The technique described affords a nonintrusive method for measuring transient electrode temperature in an optically clustered environment with an accuracy of about 20%.

引用

页码：3618 / 3624

页数：7