Development and implementation of k0-INAA standardization at 10 MW Pakistan research reactor-1

Abstract

Summary. The k 0 -method has been developed for 10 MW Pakistan Research Reactor (PARR-1). It involved the full energy peak efficiency calibration of HPGe detector for different counting geometries and characterization of neutron flux at three irradiation channels. Neutron flux was characterized for thermal to epithermal flux ratio, epithermal flux shape factor, modified spectral index, Westcott's g-factor and fast flux. The method was validated by analyzing IAEA-SL1 (lake sediment) and NIST-SRM-1572 (citrus leaves). All calculations were performed in Excel. The results revealed most of the elements with good accuracy.

Neutron activation analysis and atomic absorption spectrophotometry for the analysis of fresh, pasteurised and powder milk

“…In this study f , α and ε p were determined experimentally using the procedures given in Refs. [14,15]. Phosphorus was quantified by activation analysis using 31 P(n, α) 28 Al reaction and by applying the absolute method, which requires the determination of fast neutron flux.…”

Fruit of Morus nigra and Morus alba as environmental biomonitor: an elemental analysis by k 0-instrumental neutron activation analysis

“…All samples were irradiated at Pakistan Research Reactor-1 (PARR-1) and PARR-2. The former is a 10 MW tank in pool type reactor with nominal thermal neutron flux of 2 9 10 13 cm -2 s -1 [25]. The latter is a 30 kW Miniature Neutron Source Reactor (MNSR) having nominal thermal neutron flux of 1 9 10 12 cm -2 s -1 [21].…”

Radiological and elemental analysis of soils from Hunza in Central Karakoram using gamma-ray spectrometry and k 0-instrumental neutron activation analysis

“…Further details about the k 0 -INAA implementation can be found in our previous work [14,18]. All the recommended k 0;Au factors and nuclear data were taken from literature [19].…”