Fig. 8

Plot of \(g^{(2)}(0)\) obtained using HBT experiment versus size obtained using \(r = \sqrt{k/t_1}\). Single photons are emitted from the particles in the confinement regime, hence \(g^{(2)}(0) < 0\). The probability of multiple-photon emission increases with increase in the particle-size and it results in increase in \(g^{(2)} (0)\).