Swelling Dependence of Neutron-Irradiated Vanadium Alloys on Temperature, Neutron Fluence, and Thermomechanical Treatment

Fast Neutron Irradiated Magnetite and Haematite Investigated by Neutron Diffraction

In this paper, we present new experimental results about crystallographic and magnetic properties obtained on magnetite Fe,04 and haematite a-FqO, samples irradiated by fast neutrons. Polycrystalline rods were irradiated at 350K by fast neutrons inside the core of Melusine nuclear reactor (CENG) in Grenoble at various fluences (4 lO", 9.2 1019 and 20 10'' neutronslcm~). The irradiated samples h...

Neutron fluence effects on SC coils and comments

Neutron diffraction analysis on FINEMET alloys

Neutron diffraction has been used to study in situ the nanocrystallization process of Fe73.5Cu1Nb3Si22.52xBx (x55, 9, and 12! amorphous alloys. Nanocrystallization results in a decrease of both the silicon content and the grain size of the Fe~Si! phase with increasing value of x. By comparing the radial distribution function peak areas with those predicted for ideal bcc and DO3 structure, it ca...

Temperature dependence of neutron-induced soft errors in SRAMs

We irradiated commercial SRAMs with wide-spectrum neutrons at different temperatures. We observed that, depending on the vendor, the soft error rate either increases or slightly decreases with temperature, even in devices belonging to the same technology node. SPICE simulations were used to investigate the temperature dependence of the cell feedback time and restoring current. The shape and mag...

Fluence dependence of charge collection of irradiated pixel sensors

The barrel region of the CMS pixel detector will be equipped with “n-in-n” type silicon sensors. They are processed on DOFZ material, use the moderated p-spray technique and feature a bias grid. The latter leads to a small fraction of the pixel area to be less sensitive to particles. In order to quantify this inefficiency prototype pixel sensors irradiated to particle fluences between 4.7×10 an...