Sökning: "odd runevall"

Hittade 2 avhandlingar innehållade orden odd runevall.

1. 1. Helium in CERMET fuel - binding energies and diffusion

   Författare :Odd Runevall; Janne Wallenius; Pavel Korzhavy; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Condensed matter physics; Kondenserade materiens fysik;

   Sammanfattning : This thesis presents a first principle approach to model helium diffusionand retention in molybdenum. Results from electron structure calculations within the framework of density functional theory are used to assess parameters in a rate theory model. LÄS MER

3. 2. Helium Filled Bubbles in Solids : Nucleation, Growth and Swelling

   Författare :Odd Runevall; Nils Sandberg; Charlotte Becquart; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Helium; Radiation Damage; DFT; molybdenum; MgO;

   Sammanfattning : When nuclear fuel, fabricated for the purpose of transmuting spent fuel is irradiated, significant amounts of He is produced from alpha particles mainly emitted when 242Cm decays into 238Pu. From irradiation experiments it is known that the presence of He in the solids alters the swelling behaviour of the material. LÄS MER