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Fusion Science and Technology
Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Robert W. Bussard
Fusion Science and Technology | Volume 16 | Number 2 | September 1989 | Pages 231-236
Technical Note | doi.org/10.13182/FST89-A29152
Articles are hosted by Taylor and Francis Online.
A model of deuterium-deuterium (D-D) fusion in metal lattices is presented based on two phenomena: (a) reactions between virtual-state pairs of deuterons “bound” by electrons of high effective mass m* and (b) deuterium energy upscattering by fast ions from fusion or tritium reactions with virtual-state nuclear structure groups in palladium nuclei. Since m* is a decreasing function of deuterium ion bulk density n0, the exponential barrier tunneling factor decreases rapidly with m*. As a result, the fusion rate reaches a maximum at a loading density above zero but less than saturation. This can explain observations of transient neutron output from the (3He,n) branch of D-D fusion. At low energy, D-D reactions favor the (T,p) branch. Fast product tritium may be captured by palladium isotopes to form excited-state Ag*, removing tritium from the system and preventing deuterium-tritium fusion. This may decay by alpha or proton emission, yielding fast ions and excited state Rh* or Pd*. Fast ion collisional “trapping” may occur at Fermi electron speeds, enhancing in situ upscattering and yielding increased D-D reaction rates. Analysis of the dynamics of these processes suggests conditions for exponential growth.