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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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ANS joins others in seeking to discuss SNF/HLW impasse
The American Nuclear Society joined seven other organizations to send a letter to Energy Secretary Christopher Wright on July 8, asking to meet with him to discuss “the restoration of a highly functioning program to meet DOE’s legal responsibility to manage and dispose of the nation’s commercial and legacy defense spent nuclear fuel (SNF) and high-level radioactive waste (HLW).”
F. C. Schoenig, K. S. Quisenberry, D. P. Stricos, and H. Bernatowicz
Nuclear Science and Engineering | Volume 26 | Number 3 | November 1966 | Pages 393-398
Technical Paper | doi.org/10.13182/NSE66-A17362
Articles are hosted by Taylor and Francis Online.
The temperature dependence of the thorium-oxide resonance integral has been measured over a wide (20 to 1550 °C) temperature range. The activation method was used; the 310 keV γ ray from the decay of 233Pa was measured with a multichannel pulse-height analyzer. Measurements were performed on ThO2 rods of 0.490− and 0.353−in. diam. (surface-to-mass ratio = 0.340 and 0.465 cm2/g, respectively). The temperature dependence of the thorium-oxide resonance integral was found not to be a linear function of either (t − t0) or (√T − √T0), where t and T and centigrade and Kelvin temperature, and t0 and T0 are 20°C, and 293°K, respectively. Thus the familiar forms of the temperature dependence of the effective resonance integral, namely RI(T)/RI(T0) = 1 + α (t − t0) = 1 + β × (√T − √To) are not appropriate representations of the data. The Doppler coefficient in a 1/E spectrum is defined by α0 = [1/RI(T)] [dRI(T)/ dT] where RI(T) is the effective resonance integral of the sample excluding the 1/v contribution, and T is the temperature of the sample. It has been found that α0 = [(0.16 ± 0.01)/T] yields a good fit to the experimental data of both sample sizes. It follows that RI(T) = RI(T0) (T/T0)(0.16 ± 0.01).