Stellar Nuclear Fusion in Proton-Proton Cycle – Rankers Physics
Topic: Modern Physics
Subtopic: Nucleus

Stellar Nuclear Fusion in Proton-Proton Cycle

Which reaction is not the part of proton-proton cycle ?
\(_1 \text{H}^1 + _1 \text{H}^1 \rightarrow _1 \text{H}^2 + beta^+ + nu + Q\)
\(_1 \text{H}^2 + _1 \text{H}^2 \rightarrow _2\text{He}^3 + _0\text{n}^1 + Q\)
\(_1\text{H}^2 + _1\text{H}^1 \rightarrow _2\text{He}^3 + Q\)
\(_2 \text{He}^3 + _2 \text{He}^3 \rightarrow _2 \text{He}^4 + 2(_1 \text{H}^1) + Q\)

Solution:

In the stellar proton-proton chain reaction, deuterium fuses with a proton to form Helium-3, but deuterium does not fuse directly with another deuterium nucleus. Thus, reaction (2) is not part of this cycle.

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