Author: Fission Today

The process and equipment design of multi-modular NPPs is nearly the same as that of single modular NPPs. The major difference between the multi-modular and single modular NPPs focuses on the control and operation that is mainly provided by the CCS. The multi-modular coordinated control is the mechanism playing a central role in the realization of multi-modular scheme, giving the plant responses in normal and abnormal scenarios. In this section, the coordination mechanism inside a single reactor module and between two modules are proposed, giving the CCS design of HTR-PM plant.Coordinated control of a single reactor moduleAs illustrated in Fig. 2,…

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Machine configurationsExtensive details of the original configuration of Norman are given elsewhere13,14.Both the original and present forms are illustrated in Fig. 1. In the Norm configuration, plasmas primarily reside in the CV bounded at each end by divertors. Between the CV and divertors is a fueling region located between the M1 magnetic coil (closest to the CV) and the mirror plug (MP) (closest to the divertor). The M2 coil adjusts the field in the fueling region to facilitate neutral-gas ionization and refueling on field lines closer to the separatrix. Current is driven in the plasma by 8 neutral beams with 15 keV…

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Wang, C., Engels, A. & Wang, Z. Overview of research on China’s transition to low-carbon development: The role of cities, technologies, industries and the energy system. Renew. Sustain. Energy Rev. 81, 1350–1364 (2018).Article  Google Scholar  Chen, Y. et al. Prospects in China for nuclear development up to 2050. Prog. Nucl. Energy 103, 81–90 (2018).Article  ADS  CAS  Google Scholar  y León, S. B. World Nuclear Performance Report 2023. Tech. Rep. (World Nuclear Association, 2023). https://world-nuclear.org/our-association/publications/global-trends-reports/world-nuclear-performance-report-2023Fukuda, K., Danker, W., Lee, J., Bonne, A. & Crijns, M. IAEA Overview of Global Spent Fuel Storage (Storage of spent fuel from Power Reactors, C &S Paper…

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Differences in the Raman spectrum of the crater wall in samples with and without gold nanorodsFigure 3 compares the normalized Raman spectra recorded in a non-irradiated spot and on the crater wall of doped (UDMA-Au1) and undoped (UDMA-X) samples. Between 1400 and 2000 cm-1 all the spectra are dominated by the characteristic Raman peaks of the UDMA:TEGDMA polymer8. A closer look shows, however, that in the spectrum of the crater walls the bands at 1640 and 1715 cm-1 (and also at 1400 cm-1) decrease remarkably, and this effect is more pronounced for the higher pulse energies. These peaks are related to C = C and C = O…

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Deep Fission has announced the installation of an underground 15 MWe modular nuclear reactor at Great Plains Industrial Park in Parsons, Kansas. The project is part of the Department of Energy’s (DOE) Reactor Pilot Program, an accelerated framework aimed at quickly authorising demonstration reactors on industrial sites. The reactor will be buried 1.6 km deep in a 30-inch borehole, with criticality targeted for July 4, 2026. Borehole-based architecture using oil and geothermal components The Gravity model developed by Deep Fission is based on a conventional pressurised water reactor (PWR) design, combined with a deep vertical borehole installation. The design uses…

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Meitner, L. & Frisch, O. R. Products of the fission of the uranium nucleus. Nature 143, 239 (1939).Article  ADS  CAS  Google Scholar  Bohr, N. & Wheeler, J. A. The mechanism of nuclear fission. Phys. Rev. 56, 426–450 (1939).Article  ADS  CAS  Google Scholar  Scamps, G. & Simenel, C. Impact of pear-shaped fission fragments on mass-asymmetric fission in actinides. Nature 564, 382–385 (2018).Article  ADS  CAS  PubMed  Google Scholar  Bender, M. et al. Future of nuclear fission theory. J. Phys. G: Nucl. Part. Phys. 47, 113002 (2020).Article  CAS  Google Scholar  Eichler, M. et al. The role of fission in neutron star mergers and…

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GREIFSWALD, GERMANY – OCTOBER 29: A worker explains a photo taken about a year and a half ago that shows construction of the interior plasma chamber of the Wendelstein 7-X experimental fusion reactor at the Max Planck Institute for Plasma Physics on October 29, 2013 in Greifswald, Germany. Scientists hope to heat a miniscule amount of hydrogen to 100 million degrees in order to melt the atomic cores into helium, thereby releasing large amounts of energy in a similar way as the sun. Due to be completed in 2014, the reactor could help scientists to get closer towards creating atomic…

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