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The process of beta plus ($\beta^+$) decay can be represented by $$ \begin{align*} &\text{n} \\ &\to \text{p} + \text{X} + \beta^+ \\ &\text{Y} \end{align*} $$ Which row identifies particles X and Y? - AQA - A-Level Physics - Question 8 - 2019 - Paper 1
Question 8
The process of beta plus ($\beta^+$) decay can be represented by $$ \begin{align*} &\text{n} \\ &\to \text{p} + \text{X} + \beta^+ \\ &\text{Y} \end{align*} $$ W... show full transcript
Worked Solution & Example Answer:The process of beta plus ($\beta^+$) decay can be represented by $$ \begin{align*} &\text{n} \\ &\to \text{p} + \text{X} + \beta^+ \\ &\text{Y} \end{align*} $$ Which row identifies particles X and Y? - AQA - A-Level Physics - Question 8 - 2019 - Paper 1
Step 1
Identify the particles X and Y
Answer
In beta plus decay, a neutron (n) is transformed into a proton (p) while emitting a positron () and a neutrino (Y). Therefore, in this context, particle X is the boson, which mediates the weak force responsible for this decay, and particle Y is the electron neutrino (). Thus, the correct identification of particles X and Y is:
- X: W^+
- Y:
Step 2