In the nuclear fusion reaction $_1^2H + _1^3H \to _2^4He + n$,the repulsive potential energy between the two nuclei is $7.7 \times 10^{-14} \, J$. To what temperature must the gas be heated to initiate the reaction? $[k = 1.38 \times 10^{-23} \, J/K]$

  • A
    $10^7 \, K$
  • B
    $10^5 \, K$
  • C
    $10^3 \, K$
  • D
    $10^9 \, K$

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