ch42-p084 - 84. In order for the particle to penetrate the...

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84. In order for the α particle to penetrate the gold nucleus, the separation between the centers of mass of the two particles must be no greater than r = r Cu + r = 6.23 fm + 1.80 fm = 8.03 fm. Thus, the minimum energy K is given by () Au Au 0 91 9 6 15 1 4 8.99 10 V m/C 2 79 1.60 10 C
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