Summary
When two bubbles are connected by a window, the larger bubble grows at the expense of the smaller, due to the surface pressure difference.
It is suggested here that this effect should be introduced to partially explain the large differences between the maxima of the fusion cross-section for approximately equal-mass systems.
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Fonte, R. Heavy-ion fusion: Effect of entrance channel mass asymmetry. Lett. Nuovo Cimento 33, 319–323 (1982). https://doi.org/10.1007/BF02725555
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DOI: https://doi.org/10.1007/BF02725555