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[en] We discuss the decay of axion walls bounded by strings and present numerical simulations of the decay process. In these simulations, the decay happens immediately, in a time scale of order the light travel time, and the average energy of the radiated axions is < wa> ≅ 7ma for va/ma ≅ 500. < wa> is found to increase approximately linearly with ln(va/ma). Extrapolation of this behaviour yields < wa> ≅ 60ma in axion models of interest
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