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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.
R. W. Benjamin, C. E. Ahlfeld, J. A. Harvey, N. W. Hill
Nuclear Science and Engineering | Volume 55 | Number 4 | December 1974 | Pages 440-449
Technical Paper | doi.org/10.13182/NSE74-A23476
Articles are hosted by Taylor and Francis Online.
The neutron total cross section for 248Cm has been measured from 0.5 to 3000 eV using the Oak Ridge electron linear accelerator (ORELA) as a pulsed neutron source. The cylindrical samples of small diameter (1.6 to 4.0 mm) contained up to 13 mg of 97% 248Cm and 3% 246Cm in the oxide form. Samples were cooled with liquid nitrogen to reduce Doppler broadening. The thickest sample had an inverse thickness for curium isotopes of 624 b/atom, which made possible the identification of forty-seven resonances attributable to 248Cm and five resonances attributable to 246Cm. The cross-section data have been analyzed to obtain single-level Breit-Wigner resonance parameters for all observed resonances. An average level spacing of 40 ± 5 eV and an average s-wave neutron strength function of (1.2 ± 0.2) × 10-4 were determined for 248Cm. The resonance contributions to the thermal capture cross sections and the resonance integrals determined from the resonance parameters are 248Cm, = 2.51 ± 0.26 b, Inγ = 259 ± 12 b; 246Cm, = 1.2 ± 0.4 b, Inγ = 101 ± 11 b. These values compare well with the results of integral measurements.
