Increased efficiency of emission of hollow-cathode lamps fed by short current pulses monopulse correction

Many problems in applied spectroscopy, for example the study of the space-time characteristics of the flame of the discharge in resonance detectors, determination of the concentration of chemical elements by absorption spectroscopy in laser or arc atomization, and increased speed of absorption spectrometers operating with electronic modulation of radiation sources and nonflame atomizers, require lamps with a hollow cathode with current pulse duration of the order of 10-50 /sigma phi/ sec. The limitation of the light output of hollow-cathode lamps in these cases significantly worsens the final results of the studies due to the low signal-to-noise ratio and higher fluctuations of the light emission caused by unavoidable transient processes in the development of glow discharge. The authors study the development of the light pulse of hollow-cathode lamps excited by rectangular current pulses. This article includes a table of the dependence of the instability emission of copper, tungsten and vanadium in an LT-2 lamp on the duration of the additional current pulse /tau//sub 2/ with I/sub 1/=100mA and with duty factor of Q=10.