PubMed · 5853743
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F F Haywood, T G Provenzano, J A Auxier. 1965. Operations plan--Operation HENRE. CEX-65.03.. https://doi.org/10.2172/4565259
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Nuclear data for production of the therapeutic radionuclides 32P, 64Cu, 67Cu, 89Sr, 90Y and 153Sm via (n,p) reactions on the target nuclei 32S, 64Zn, 67Zn, 89Y, (90)Zr and 153Eu, respectively, are discussed. The available information on each excitation function was analysed. From the recommended data set for each reaction the average integrated cross section for a standard 14 MeV d(Be) neutron field was deduced. The spectrum-averaged cross section was also measured experimentally. A comparison of the integrated value with the integral measurement served to validate the excitation function within about 15%. A fast neutron source appears to be much more effective than a fission reactor for production of the above-mentioned radionuclides in a no-carrier-added form via the (n,p) process. In particular, the possibility of production of high specific activity 153Sm is discussed.
An existing discrepancy in the determined values of the width of the hexadecane-water interface as determined from X-ray reflection (XR) and recent neutron reflection (NR) measurements has been resolved. The NR-determined width reported here is 6.0 +/- 1.0 Angstroms, which compares extremely well with the XR-determined value of 6.0 +/- 0.2 Angstroms. The origin of the discrepancy has been attributed to the thermal history of the interface rather than sample purity or other technique-dependent reasons.
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