AMPLITUDE ANALYZER OF NUCLEAR EMISSION SPECTRA
The 128-channel analyzer (AMA-3s) is described with recorder at the potentialoscope (LN-4). The capacitance of every channel amounts to 2/sup 16/ pulses. The (average) resolving time is (0.5 n + 22) mu sec, where n is the number of the channel. The measurement results may be read in several ways. They may be read in the form of 16-digit binary numbers from the screen of the monitor tube or channel-like from the neon indicators. The possibility of choosing the channel is provided. They may also be read in the form of a histogram on the monitor screen, where the histogram can be observed in the spectrum setting process. The histogram scale may vary from 512 to 65,000 pulses over the entire screen. The spectrum histogram can be traced automatically by the recording instrument (EPP-0.9). The instrument can be actuated either by coincidences or anticoincidences with the external controlling pulses. The pulse recording in the AMA-3s analyzer proceeds as follows: the incoming pulse hits (after being amplified in the linear amplifier) the input of an amplitude-time converter, where it is transformed into a square pulse, the duration of which is proportional to the amplitude of the input signal. This pulse controls the generation of a train of pulses, the number of which is also proportional to the amplitude of the input signal. The pulse train appears as digital address of the memory cell and is directed to the "address device." The latter represents a binary counter, each of whose cells is connected with a special key. The output currents of the keys cause a voltage drop in the general load, which is proportional to the number of pulses in the train. This voltage is applied to the horizontally deflecting plates of a potentialoscope, providing for the incidence of the potentialoscope beam on the first storage element of the storage cell chosen by the location system. After the storage cell is chosen the recording of the pulse begins. The pulse recording program in the storage cells of the chosen channel is described. Having finished the recording of the present pulse, the "reset pulse" will be produced, which discharges the counters of the location cells to "zero-charge" and frees the analyzer entrance. (TCO)
- Research Organization:
- Leningrad Electric Engineering Inst.
- NSA Number:
- NSA-15-014472
- OSTI ID:
- 4065562
- Journal Information:
- Izvest. Leningrad. Elektrotek. Inst., Vol. Vol: No. 38; Other Information: Orig. Receipt Date: 31-DEC-61
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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