Results of calculations for four different designs of a fusion reactor using D-D…

PHYSICS · Single correct · A Level · Physics · Nuclear physics · Nuclear physics

Problem

Results of calculations for four different designs of a fusion reactor using D-D reaction are given below. Which of these is most promising based on Lawson criterion? (1) deuteron density = 2.0×1012 cm−32.0 \times 10^{12} \text{ cm}^{-3} , confinement time = 5.0×10−3 s5.0 \times 10^{-3} \text{ s} (2) deuteron density = 8.0×1014 cm−38.0 \times 10^{14} \text{ cm}^{-3} , confinement time = 9.0×10−1 s9.0 \times 10^{-1} \text{ s} (3) deuteron density = 4.0×1023 cm−34.0 \times 10^{23} \text{ cm}^{-3} , confinement time = 1.0×10−11 s1.0 \times 10^{-11} \text{ s} (4) deuteron density = 1.0×1024 cm−31.0 \times 10^{24} \text{ cm}^{-3} , confinement time = 4.0×10−12 s4.0 \times 10^{-12} \text{ s}

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