Potential of231Pa for Gas Cooled Long-life Core

Large Eddy Simulation in Pebble Bed Gas Cooled Core Reactors

A High Temperature Gas-cooled Reactor (HTGR) is one of the renewed reactor designs to play a role in nuclear power generation. This reactor design concept is currently under consideration and development worldwide. The combination of coated particle fuel, inert helium gas as coolant and graphite moderated reactor makes possible to operate at high temperature yielding a high efficiency. In this ...

A Particle-bed Gas-cooled Fast Reactor Core Design for Waste Minimisation

The issue of waste minimisation in advanced reactor systems has been investigated using the Particle-Bed Gas-cooled Fast Reactor (PB-GCFR) design being developed and funded under the U.S. Department of Energy Nuclear Energy Research Initiative (USDOE NERI) Programme. Results indicate that for the given core power density and constraint on the maximum TRU enrichment allowable, the lowest amount ...

High Temperature Gas Cooled Reactors

Erbium-Based Gas-Cooled Disk Laser

We report on a novel resonantly-pumped, erbium (Er)-based, gas-cooled disk laser (GCDL) scalable to highaverage power (HAP). The GCDL uses edge-pumped composite laser disks known for their near perfect pump uniformity and compact configuration. Edge pumping enables a long path for pump absorption, which permits using low Er concentration and limits upconversion losses. Resonant operation reduce...

A buffer-gas cooled Bose-Einstein condensate

We report the creation of a Bose-Einstein condensate using buffer-gas cooling, the first realization of BEC using a broadly general method which relies neither on laser cooling nor unique atom-surface properties. Metastable helium (He*) is buffer-gas cooled, magnetically trapped, and evaporatively cooled to quantum degeneracy. 10 atoms are initially trapped, leading to Bose-Einstein condensatio...