A new monitor set for the determination of neutron flux parameters in short-time k0-NAA

0366303 - ÚJF 2012 RIV NL eng J - Journal Article
Kubešová, Marie - Kučera, Jan - Fikrle, Marek
A new monitor set for the determination of neutron flux parameters in short-time k0-NAA.
Nuclear Instruments & Methods in Physics Research Section A. Roč. 656, č. 1 (2011), s. 61-64. ISSN 0168-9002. E-ISSN 1872-9576
R&D Projects: GA ČR GA202/09/0363
Institutional research plan: CEZ:AV0Z10480505
Keywords : Short-time activation analysis * ko standartizacion * neutron flux parameters
Subject RIV: BG - Nuclear, Atomic and Molecular Physics, Colliders
Impact factor: 1.207, year: 2011

Multipurpose research reactors such as LVR-15 in Řež require monitoring of the neutron flux parameters (f, α) in each batch of samples analyzed when k0 standardization in NAA is to be used. The above parameters may change quite unpredictably, because experiments in channels adjacent to those used for NAA require an adjustment of the reactor operation parameters and/or active core configuration. For frequent monitoring of the neutron flux parameters the bare multi-monitor method is very convenient. The well-known Au–Zr tri-isotopic monitor set that provides a good tool for determining f and α after long-time irradiation is not optimal in case of short-time irradiation because only a low activity of the 95Zr radionuclide is formed.
Permanent Link: http://hdl.handle.net/11104/0201350