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in this nucluar reaction ¹¹B(d,α)⁹Be . if the Deuterium fall down with kinetic energy 2.5 Mev , while alpha's particles start moving with kinetic energy 8.5 Mev out by angle 90 degree , calculate : a- calculate value of Q for this reaction then note is it Exothermic or Endothermic reaction. b- calculate the Critical energy of this reaction .

Be : 9. o12182
d= 2.01 355721
4=4. co150618

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