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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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NECX debut: Shaping the next era of energy
The sold-out inaugural Nuclear Energy Conference & Expo (NECX) got off to a bumping start in Atlanta, Ga., Tuesday morning with an opening plenary that felt like part dance party and part highlight reel showing off the latest industry achievements.
That intro left the audience pumped up for Entergy’s CEO and NEI chair Drew Marsh, who welcomed everyone to the event, hosted jointly by the American Nuclear Society and the Nuclear Energy Institute. He spoke to a full house of more than 1,300 attendees, promising a blend of science, technology, policy, and advocacy centered around the future of nuclear energy.
P. Greebler
Nuclear Science and Engineering | Volume 3 | Number 4 | April 1958 | Pages 445-455
Technical Paper | doi.org/10.13182/NSE58-A25481
Articles are hosted by Taylor and Francis Online.
Thermal and epithermal absorption of neutrons by a cylindrical control rod are computed using two-group diffusion theory and assuming a flat source distribution for the epithermal group. Hurwitz-Roe area rule concepts are modified to take into account the nonthermal absorption by the rod and are extended to include rods that are not “black.” The effect of the control rod on the neutron economy is averaged over a cylindrical cell surrounding the rod and is expressed in terms of two-group absorption cross sections. Control rod power perturbations in a reactor are calculated from the two-group flux distributions in the cell containing the centered control rod.
