Polonium behavior following a vacuum window rupture in a lead-bismuth eutectic based accelerator driven system

Accelerator driven fast nuclear reactors cooled by lead-bismuth eutectic (LBE) are developed for transmuting long-lived radionuclides in spent fuel. Due to the nature of coolant, operating reactor will result a production 210Po neutron capture. Understanding behavior this highly radiotoxic nuclide event failure window separating evacuated proton beam guide from core is required safety assessments. The present work aims at acquiring knowledge studying evaporation polonium neutron-irradiated LBE and its deposition scaled down model tube. Experimental results along with Monte Carlo simulations indicate that adsorbs as single species an adsorption enthalpy approximately −156 kJ/mol.