TITLE

Non-destructive analysis of a bulky sample from a natural fossil reactor

AUTHOR(S)
Baechler, S.; Materna, Th.; Jolie, J.; Cauwels, P.; Crittin, M.; Honkimaki, V.; Johner, H. U.; Kern, J.; Masschaele, B.; Mondelaers, W.; Piboule, M.
PUB. DATE
July 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 529 Issue 1, p734
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Two non-destructive and position sensitive methods were used for analyzing the presence of many elements in a sample coming from the reactor site of Oklo (Gabon). At the European Synchrotron Radiation Facility (ESRF), uranium and lead were visualized in this piece by element sensitive tomography. The same sample was then studied with the new Prompt Gamma Activation (PGA) facility at the Swiss spallation neutron source SINQ (PSI Villigen). A neutron focusing capillary lens permits the PGA to be turned into a position sensitive method. In the sample, the trace of [sup 235]U and [sup 238]U, but also 7 other elements were analyzed. © 2000 American Institute of Physics.
ACCESSION #
6029913

 

Related Articles

  • Characterisation of neutron fields at Cernavoda NPP. Cauwels, Vanessa; Vanhavere, Filip; Dumitrescu, Dorin; Chirosca, Alecsandru; Hager, Luke; Million, Marc; Bartz, James // Radiation Protection Dosimetry;Apr2013, Vol. 154 Issue 1, p104 

    Near a nuclear reactor or a fuel container, mixed neutron/gamma fields are very common, necessitating routine neutron dosimetry. Accurate neutron dosimetry is complicated by the fact that the neutron effective dose is strongly dependent on the neutron energy and the direction distribution of the...

  • Characteristics of neutron and gamma radiation in the core of the ΦC-1-4.37.P critical assembly. Sevast’yanov, V.; Nikolaev, S.; Somov, I.; Shesterkin, A.; Chernov, V.; Volkov, V.; Kas’yan, A.; Masterov, A.; Moseev, V. // Instruments & Experimental Techniques;Jul2007, Vol. 50 Issue 4, p444 

    The characteristics of neutron and γ-ray fields (spectrum, flux density, average energy, cross sections of 23 nuclear reactions, and γ-ray dose rate) and the γ-ray field in the core of the ΦC-1-4.37.P critical assembly of the ΦC-1M critical bench are determined. The results of...

  • Application of GRS method to evaluation of uncertainties of calculation parameters of perspective sodium-cooled fast reactor. Peregudov, A.; Andrianova, O.; Raskach, K.; Tsibulya, A. // EPJ Web of Conferences;2013, Issue 42, p07002-p.1 

    The article focuses on the use of Gamma-Ray Spectrometer (GRS) method to calculate the uncertainties of calculation parameters of the sodium-cooled fast reactors. It mentions that the calculation errors due changes in neutron data and technological parameters including geometrical and material...

  • Is the k0 method accurate for elements with high Q0 values? Kennedy, G.; St-Pierre, J. // Journal of Radioanalytical & Nuclear Chemistry;Sep2003, Vol. 257 Issue 3, p475 

    With a SLOWPOKE reactor, activation by epithermal neutrons is more important than for most other reactors. It was therefore undertaken to verify the accuracy of the k0 method for all elements with high Q0 values. Accurate standards of 40 elements were prepared and irradiated in the inner and...

  • Screening of primordial and artificial radionuclides in German steel by low-level gamma-ray spectrometry in an underground laboratory. Köhler, M.; Saupe, M. // Journal of Radioanalytical & Nuclear Chemistry;Feb2005, Vol. 263 Issue 2, p381 

    Extensive soil and sediment sampling was conducted along the Colorado Front Range and the plains east of the Front Range at locations believed to only be exposed to global fallout. The average240Pu/239Pu atom ratio in the samples collected in...

  • Analysis of SMELS by k-based IM-NAA method using PFTS position of KAMINI reactor for quality control exercise. Swain, K.; Acharya, R.; Reddy, A. // Journal of Radioanalytical & Nuclear Chemistry;Apr2014, Vol. 300 Issue 1, p33 

    As a part of QA/QC of k-based internal monostandard neutron activation analysis (IM-NAA), three types of synthetic multielement standards (SMELS) were analyzed using pneumatic fast transfer system irradiation position of KAMINI reactor, IGCAR. Radioactive assay of activation products was carried...

  • On the reassessment of thermal neutron doses in TLD-100 by measuring the residual dose. Abraham, A.; Weinstein, M.; German, U.; Alfassi, Z. B. // Radiation Protection Dosimetry;Aug2007, Vol. 126 Issue 1-4, p524 

    By employing second readouts and the Phototransferred thermoluminescence (PTTL) method, high doses may be reassessed on the basis of residual dose information. It was shown in the past that for TLD-100, gamma doses can be reassessed by using a simple and efficient method, which consists of...

  • CAN ULTRA-HIGH ENERGY RESOLUTION GAMMA-RAY SPECTROMETERS DIRECTLY DETECT FISSILE ISOTOPES IN SPENT NUCLEAR FUEL? Drury, Owen B.; Robles-Olson, Andrea; Velazquez, Miguel; Dreyer, Jonathan G.; Friedrich, Stephan // Proceedings of the Institute of Nuclear Materials Management Ann;2009, p1 

    Superconducting ultra-high energy resolution Gamma-ray spectrometers offer an order of magnitude improvement in energy resolution over conventional high-purity germanium detectors. This not only reduces line overlap in non-destructive isotope analysis (NDA) and thus improves the measurement...

  • Testing the improved method for calculating the radiation heat generation at the periphery of the BOR-60 reactor core. Varivtsev, A.; Zhemkov, I. // Physics of Atomic Nuclei;Dec2014, Vol. 77 Issue 14, p1671 

    The application of the improved method for calculating the radiation heat generation in the elements of an experimental device located at the periphery of the BOR-60 reactor core results in a significant reduction in the discrepancies between the calculated and the experimental data. This allows...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics