We consider the question of whether cosmic ray catalysed false vacuum decay can be phenomenologically more important than spontaneous decay via quantum tunnelling. We extend the zero bubble wall width Landau-WKB analysis of catalysed false vacuum decay to include the leading order effects of finite wall width and derive an expression for the thin-wall bubble action. Using this we calculate the ...

High temperature oxidation is considered to play an essential role in the thickness debit effect on creep rupture life of Ni-based single crystal (SC) superalloys. In order clarify effects, thin-walled specimens different (t = 0.1, 0.3, 1.0 mm) were prepared. Cyclic and isothermal tests a high-Al SC superalloy IC21 carried out at 900 °C 1100 study effects behavior consequent microstructural deg...