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Fusion Science and Technology
Latest News
In transition: Commercializing fusion power
Commercial fusion power is closer than ever. There are now around 30 U.S. fusion companies, several of which claim to be on track to connect to the grid as early as the 2030s.
Tokamak and laser inertial confinement approaches benefit from decades of research at facilities such as the National Ignition Facility (NIF) at Lawrence Livermore National Laboratory and ITER, with alternative concepts including stellarator, magnetic mirror, and Z-pinch confinement also making notable progress as private and government funding for fusion increases.
T. E. Young, S. D. Reeder
Nuclear Science and Engineering | Volume 40 | Number 3 | June 1970 | Pages 389-395
Technical Paper | doi.org/10.13182/NSE70-A20190
Articles are hosted by Taylor and Francis Online.
The total neutron cross section of 242Pu has been measured from 0.0015 to 8000 eV, using PuO2 powder samples in the Materials Testing Reactor (MTR) fast chopper. The data give 26.9 ± 2.0 and 18.5 ± 2.0 b for the 0.0253 eV total and absorption cross sections, respectively. It was necessary to correct the total cross-section data for water contamination and for the effect of scattering by small particles. To determine the proper forms for these corrections, low-energy total cross-section measurements were made using samples of Al2O3 and ThO2. Analysis of resonances below 180 eV gives a resonance absorption integral of 1110 ± 60 b, and a neutron s-wave strength function of (0.99 ± 0.44) × 10−4. (A weighted average of data available on this isotope gives 1175 ± 70 b for the resonance absorption integral and 19.7 ± 1.0 b for the neutron absorption cross section at 0.0253 eV).
