Comparison of irradiated foil measurements with activation calculations and HPGe simulations

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Theoretical activation calculations for Fe, Ni, and stainless steel foils were compared against irradiated foil measurements from a critical assembly. Calculated/experiment values spanning 0.62–1.31 showed that the restricted approach used here is insufficient for experiment planning, with the collapsed cross-section being the primary source of error. The effect of decay time on gamma-ray spectroscopy measurement reliability was investigated using a Monte Carlo HPGe detector model. Simulations showed no correlation with decay time, absent interferences. Specific interferences for Fe-59 (Ni) and Co-60 (stainless steel) activation product ratios suggested optimal measurement windows having respective decay times of 9–11 days and 4–7 days.

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  1. 1.

    Wang S et al (2016) MCNP modeling of NORM dosimetry in the oil and gas industry. J Radioanal Nucl Chem.

    Google Scholar 

  2. 2.

    Assar E et al (2013) The operator dose assessment of landmine detection systems using the neutron does backscattering method. J Radioanal Nucl Chem.

    Google Scholar 

  3. 3.

    Sharma M et al (2014) MCNP modeling of a neutron generator and its shielding at Missouri University of Science and Technology. Nucl Instrum Methods Phys Res A 767:126–134

    CAS  Article  Google Scholar 

  4. 4.

    Auxier J et al (2017) Review of current nuclear fallout codes. J Environ Radioact 171:246–252

    CAS  Article  Google Scholar 

  5. 5.

    Planning guidance for response to a nuclear detonation 2nd ed., Radiation Emergency Medical Management, National Library of Medicine. Accessed 26 June 2017

  6. 6.

    Ródenas J (2017) Application of the Monte Carlo method to estimate doses due to neutron activation of different materials in a nuclear reactor. DOI, Radiat Phys Chem.

    Google Scholar 

  7. 7.

    Pohorecki W, Jodlowski P, Pytel K, Prokopowicz R (2017) Long-lived radionuclide activity formed in ITER construction steels in 6Li-D converter neutron field. Fusion Eng Des.

    Google Scholar 

  8. 8.

    Goorley T et al (2012) Initial MCNP6 release overview. Nucl Technol 180:298–315

    CAS  Article  Google Scholar 

  9. 9.

    Perez-Andujar A et al (2004) Pefromance of CdTe, HPGe, and NaI(Tl) detectors for radioactivity measurements. Appl Radiat Isot 60:41–47

    CAS  Article  Google Scholar 

  10. 10.

    Hung N et al (2016) Intercomparison of NaI(Tl) and HPGe spectrometry to studies of natural radioactivity on geological samples. J Environ Radioact 164:197–201

    Article  Google Scholar 

  11. 11.

    Chart of the Nuclides Database, National Nuclear Data Center. Accessed 19 May 2017

  12. 12.

    Chadwick M et al (2011) ENDF/B-VII.1 nuclear data for science and technology: cross sections, covariances, fission product yields and decay data. Nucl Data Sheets 112:2887–2996

    CAS  Article  Google Scholar 

  13. 13.

    Material Analysis Sheet. Shieldwerx. Accessed 20 June 2017

  14. 14.

    Stainless Steel—AISI 304—Foil, Goodfellow Corporation. Accessed 13 May 2017

  15. 15.

    Brewer R et al (2016) Uranium-235 Sphere reflected by normal uranium using flattop. International Handbook of Evaluated Criticality Safety Benchmark Experiments NEA/NSC/DOC/(95)03/II

  16. 16.

    Keith C et al (2017) Report on Activation Product Interpretation for Critical Assemblies. LA-CP-17-20209

  17. 17.

    Gunnink R, Niday JB (1972) Computerized Quantitative Analysis by Gamma-ray Spectroscopy (GAMANAL), Vol. 1-4, UCRL-51061

  18. 18.

    Coursey J et al. atomic weights and isotopic compositions with relative atomic masses. NIST Physical Measurement Laboratory. Accessed 5 June 2017

  19. 19.

    Koning A et al. TENDL-2015: TALYS-based evaluated nuclear data library. Accessed 23 May 2017

  20. 20.

    Goodell J et al (2017) Validation of a monte carlo HPGe Detector model against irradiated foil gamma-ray spectroscopy measurements. J Radioanal Nucl Chem.

    Google Scholar 

  21. 21.

    Rooney B et al (2015) PeakEasy 4.84. Los Alamos National Laboratory, LA-CC-13-040.

  22. 22.

    OECD/NEA Data Bank (2014) JEFF-3.2 evaluated nuclear data library.

  23. 23.

    Shibata K et al (2011) JENDL-4.0: a New Library for Nuclear Science and Engineering. J Nucl Sci Technol 48(1):1–30

    CAS  Article  Google Scholar 

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This work was performed under the auspices of the U.S. Department of Energy by Lawrence Livermore National Laboratory under Contract DE-AC52-07NA27344.


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Goodell, J.J., Egnatuk, C.M., Padgett, S.W. et al. Comparison of irradiated foil measurements with activation calculations and HPGe simulations. J Radioanal Nucl Chem 316, 475–483 (2018).

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  • MCNP
  • Gamma-ray spectroscopy
  • Neutron activation
  • HPGe model
  • Critical assembly