Das, HA (reprint author), Univ Amsterdam, Analyt Chem Lab, Nieuwe Achtergracht 166, NL-1018 WV Amsterdam, Netherlands.
Instrumental neutron activation analysis (INAA) often relies on reactions with thermal neutron fluxes of less than or equal to 10(12) cm(-2.)s(-1) like with the Chinese made Miniature Neutron Source Reactor (MNSR). Next to the obvious advantages of a small reactor, there are the inherent limitations of intermittent operation, the low nux and its eventual decrease over the working period and the necessity of using cyclic INAA rather than single rabbit irradiations. They bear on the precision and accuracy of results. This paper deals with the use of the MNSR for routine INAA in terms of the capacity of existing and eventual additional irradiation facilities and with the elimination of systematic biases and the optimization of precision. A survey of eventual applications is added.