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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. W. L. Sanford, L. J. Lorence, J. A. Halbleib, J. G. Kelly, P. J. Griffin, J. W. Poukey, W. H. McAtee, R. C. Mock
Nuclear Science and Engineering | Volume 114 | Number 3 | July 1993 | Pages 190-213
Technical Paper | doi.org/10.13182/NSE93-A24033
Articles are hosted by Taylor and Francis Online.
An intense reusable source of pulsed photoneutrons is developed that produces ≈0.5 or 1.0 × 1014 neutrons in an ∼15-ns pulse from natural lead or depleted uranium, respectively, on the HERMES III electron accelerator. Corresponding to this source, a numerical model is developed that is applicable to other pulsed-power systems. If Vp represents the peak voltage of HERMES III measured in megavolts, then model predictions show that over the range 12 MV < Vp< 20 MV, the number of neutrons produced per incident electron is 7.2 × 10-6(VP — 11)2.0 and 1.2 × 10-6(VP — 7.4)2 8 in lead and uranium, respectively. Measurements using a set of nuclear activation foils confirm these predictions as well as predictions of the spatial and spectral distribution of the neutrons at Vp = 19 MV.
