Область применения

1.1 This practice covers photomultiplier properties that are essential to their judicious selection and use of photomultipliers in emission and absorption spectrometry. Descriptions of these properties can be found in the following sections:

SectionStructural Features4General4.1External Structure4.2Internal Structure4.3Electrical Properties5General5.1Optical-Electronic Characteristics of the Photocathode5.2Current Amplification5.3Signal Nature5.4Dark Current5.5Noise Nature5.6Photomultiplier as a Component in an Electrical Circuit5.7Precautions and Problems6General6.1Fatigue and Hysteresis Effects6.2Illumination of Photocathode6.3Gas Leakage6.4Recommendations on Important Selection Criteria7

1.2 Radiation in the frequency range common to analytical emission and absorption spectrometry is detected by photomultipliers presently to the exclusion of most other transducers. Detection limits, analytical sensitivity, and accuracy depend on the characteristics of these current-amplifying detectors as well as other factors in the system.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.