{"id":223,"qualified_id":"DM223","process":"Diffusivity","process_types":[{"abbreviation":"MDF","description":"Diffusion"}],"method":"Experiment","scaled":false,"material":"Cu","alloy":"","material_composition":"99.999%","species":{"qualified_id":"F3","text":"H","charge":0},"comment":"Diffusion coefficient measured by outgassing spherical sample initially saturated by hydrogen. The pressure is thus very low. Data provided by M. Lavrentiev (UKAEA, 2024) with permission from STEP.","refs":[{"qualified_id":"B22","authors":"L. Katz, M. Guinan, R. J. Borg","title":"Diffusion of H2, D2, and T2 in Single-Crystal Ni and Cu","journal":"Physical Review B","volume":"4","page_start":"330","page_end":"341","year":1971,"doi":"10.1103/physrevb.4.330","bibcode":"1971PhRvB...4..330K","url":"https://dx.doi.org/10.1103/PhysRevB.4.330"}],"json_data":{"D0":{"value":1.13e-06,"units":"m2.s-1","unc":4e-08},"Ed":{"value":0.4,"units":"eV","unc":0.0},"Trange":[723,1198]}}