We determined non-destructively the elemental compositions of internal volumes within complex-shaped objects, by combining 3D X-ray or neutron imaging, prompt-gamma activation analysis, and Monte Carlo computer simulations.

Neutron Activation Analysis Prognosis and Optimization (NAAPRO) code was applied for the prognosis of activation products, their activities, number counts recorded in detector, minimum detection limits as well gamma spectrum obtained fast neutron analysis experiments. Simulations were performed geological biological reference materials irradiated with 14 MeV neutrons at 5.5 MV NCSRD tandem acce...

*上 田泰司 ,中 原元和,石 井紀明,鈴 木 譲:放 射線医学総合研究所 海洋 放射生 態学研究部,那 珂湊 市 磯崎3609〒311-12 **鈴 木浜治:動 力炉核燃料開発事業団 安全管理部 茨城県那珂郡東海村村松3371 〒319-11 Trace element/Cephalopods/Concentration factor For the estimation of internal radiation to human beings, the amounts of Mn, Fe, Cu, Zn, Co and Cs in 5 species of marine cephalopods were determined by atomic absorption spectro photometry and neutron activation analysis, and ...

Effects of bioturbation through the Late 'Institute of Geochemistry, University of Vienna, Althanstrasse 14, A-1090 Vienna, Austria, Eocene impactoclastic layer near (*christian,koeberl@univie,ac,at) 'Department of Geology, Auburn University, Auburn, AL 36849-5305, USA, Masignano, Italy. 'Osservatorio Geologico di Coldigioco, 1-62020 Frontale di Apiro (MC), Italy, r In: Geological and Biologica...

Multielements in a typical Japanese diet certified reference material prepared at the National Institute for Environmental Studies (NIES) of Japan, in collaboration with the National Institute of Radiological Sciences (NIRS) of Japan were determined by instrumental neutron activation analysis (INAA). Five samples (ca. 510-1000 mg) and comparative standards were irradiated for a short time (10 s...

A procedure based on radiochemical neutron activation analysis was developed for the determination of chromium in biological materials. The procedure consists of irradiation of reference and test samples in a nuclear reactor, microwave sample digestion, selective and quantitative radiochemical separations of chromium and gamma-ray spectrometric measurement of 51Cr. Separation of chromium from t...