Gallo C F
Appl Opt. 1971 Nov 1;10(11):2517-20. doi: 10.1364/AO.10.002517.
The behavior of long linear xenon discharges with metallic halide additives in narrow-bore quartz tubes is described. For various lamp applications, these discharges may have several desirable characteristics: (1) controllable line emission or continuum emission as desired, with excellent color rendition, (2) reasonable efficiency, (3) fast startup (~20 sec), (4) elimination of the need for mercury and its pollution hazard, (5) possible efficient operation in the range between a few watts per linear cm and ~30 W/linear cm. The present lamps are in the laboratory stage, and several problems remain to be solved. It is argued that the continuum emission which sometimes appears in these xenon + metallic halide discharges (and also in commercial mercury arc lamps with certain metallic halide additives) is correlated with a high vapor pressure of the metallic halide additive. Thus, this continuum may be due to either molecular radiation or transitions involving free electrons originating copiously from the ionization of the metallic additive which has a comparatively low ionization potential. If a sufficiently high vapor pressure of any metallic halide can be achieved in the discharge, then a continuum emission seems to be a fairly common phenomenon. A scheme for achieving this objective is described.
描述了在窄口径石英管中含有金属卤化物添加剂的长线性氙放电行为。对于各种灯的应用，这些放电可能具有几个理想的特性：（1）可根据需要控制线状发射或连续发射，具有出色的显色性；（2）效率合理；（3）启动快（约20秒）；（4）无需汞及其污染危害；（5）在每线性厘米几瓦至约30瓦/线性厘米的范围内可能高效运行。目前的灯处于实验室阶段，仍有几个问题有待解决。有人认为，这些氙+金属卤化物放电（以及某些含有金属卤化物添加剂的商用汞弧灯）中有时出现的连续发射与金属卤化物添加剂的高蒸气压有关。因此，这种连续发射可能是由于分子辐射或涉及大量源自具有相对较低电离势的金属添加剂电离的自由电子的跃迁。如果在放电中能实现任何金属卤化物足够高的蒸气压，那么连续发射似乎是一种相当常见的现象。描述了实现这一目标的方案。
