A radioactive nucleus \( n_{2} \) has \( 3 \) times the decay constant as compared to the decay constant of another radioactive nucleus \( n_{1} \). If initial number of both nuclei are the same, what is the ratio of number of nuclei of \( n_{2} \) to the number of nuclei of \( n_{1} \), after one half-life of \( n_{1} \)?