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Multichannel analyser for spectrometer - has reference and measuring pulses fed simultaneously to compensate distortion of amplitude spectra
Multichannel analyser for spectrometer - has reference and measuring pulses fed simultaneously to compensate distortion of amplitude spectra
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机译:用于光谱仪的多通道分析仪-具有同时馈入的参考脉冲和测量脉冲以补偿振幅频谱的失真
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摘要
In a neutron-activation spectrometric operation a particle emission from a sample is detected and is converted in a multichannel analyser into a digital signal which identifies the particular channel corresponding to the pulse amplitude. A train of reference pulses of stable frequency is generated, having amplitudes falling within one group of the channels. The reference and measuring pulses are fed concurrently to the analyser. When a reference pulse coincides with a measuring pulse the system identifies a channel corresponding to the combined amplitude of the two pulses. This channel is within a second group of channels. The ratio of the reference pulse rate to the measuring pulse rate can be determined for a standard and test samples. This compensates for the distortion of the amplitude spectrum of a multi-channel analyser.
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