This paper analyzes the current fuel assembly(FA) designs and calculates their local power peaking factors with MCNP code under the condition of using the same enrichment fuel and containing no burnable poison,and finds that the local power peaking factors of these FAs are a little far away from the design objective.

Refined allocations of the assemblies to high- and low- enrichment zones were used to reduce the power peaking factors of the Accelerator-Driven Sub-critical Fast Reactor (ADSFR) loaded with (U, Pu, Np, Am, Cm)O_2 fuel elements.

By using lattice calculation code WIMS D/4,hexagonal nodal diffusion code SIXTUS and the WIMS N1/N2 library which include the data of the nuclide H in ZrH,Er 166 and Er 167,nuclear safety parameters are analyzed of uranium zirconium hydride pulsed reactor core,power peaking factor and fuel temperature coefficient.

Comprehensive test technology of pulsed laser peak power in common wavebands;

Study on the methods of measurement and calibration of the peak power of the narrow pulsed semiconductor laser

In the paper,a kind of stretch enlargement and fast discharge circuit for the detecting of single and repeat frequency impulse signal is introduced,and applied on the detection of peak power of narrow impulse laser.