Statistical errors arising from use of a gated pulse train for total live time measurement during pulse amplitude analysis
Correction of results for counts lost during the analyzer dead time can be overcome automatically by carrying out all counting runs for a known or measured total instrument live times'' rather than for real time as indicated. This method avoids much tedious calculation and remains valid even if the analyzer dead time varies widely from pulse to pulse. The preferred method involves gating by the analyzer of an accurately timed pulse train, which is then counted by a suitable external scaler. Statistical questions raised by such a sampling procedure are considered. It is concluded that a fixed-frequency source at 50 pulses/sec would be satisfactory in most cases. The use of a beam current integrator, in conjunction with the live times'' gate, is also considered, since this probably offers the best method of dealing with source intensity fluctuations.
- Research Organization:
- Atomic Energy Research Establishment, Harwell, Berks, Eng.
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-008933
- OSTI ID:
- 4816492
- Journal Information:
- Nuclear Instruments and Methods, Vol. 14, Issue C; Other Information: Orig. Receipt Date: 31-DEC-62; ISSN 0029-554X
- Publisher:
- Elsevier
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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