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Proceedings Paper

Short-time neutron activation analysis even with highly activated samples
Author(s): K. M. Ochsenkuehn; Neophytos N. Papadopoulos
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Paper Abstract

In multi-element neutron activation analysis with side nuclide half-life and concentration ranges, the experimental conditions have to be optimized in order to keep the count rates within certain limits, to avoid measurement distortions. By the use for a special loss-free counting technique which compensates the count losses due to high count rates and dead-times, the measurement time can be reduced drastically, permitting the measurement of short- lived and medium-lived nuclides in the presence of long- lived nuclides in spite of the possible high count rate immediately after activation, without matrix interference and short-lived nuclide information loss. In order to check the linearity and the reliability of the loss-free counting technique, several measurements have been performed by adding known amounts of a certain element to similar samples and by verifying the concentration values of standards at various count rates and dead-times, changing their activation level. The capability of short-time activation analysis increases the analytical throughput permitting more customers even far from the reactor facility to analyze samples by simply sending them to the reactor for irradiation and measurement and getting the data back for evaluation. Thus the application range can be broadened.

Paper Details

Date Published: 27 February 1997
PDF: 3 pages
Proc. SPIE 2867, International Conference Neutrons in Research and Industry, (27 February 1997); doi: 10.1117/12.267857
Show Author Affiliations
K. M. Ochsenkuehn, NCSR Demokritos (Greece)
Neophytos N. Papadopoulos, NCSR Demokritos (Greece)

Published in SPIE Proceedings Vol. 2867:
International Conference Neutrons in Research and Industry
George Vourvopoulos, Editor(s)

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