at given initial temperature (T ) and density (ρ). To this end, the evolutions of various single

excited nuclei at T = 1 − 20 MeV and ρ = 0.2 - 1.2 ρ0 are simulated using the thermal isospindependent quantum molecular dynamics (T hIQMD) model. Momentum correlation functions of

identical proton-pairs (Cpp(q)) or neutron-pairs (Cnn(q)) at small relative momenta are calculated

by Lednick ´ y and Lyuboshitz analytical method. The results illustrate that Cpp(q) and Cnn(q) keep

sensitivities to the source size (A) at lower T or higher ρ, but almost not at higher T or lower ρ. And

the sensitivities become stronger for smaller source. Moreover, the T , ρ and A dependencies of the

Gaussian source radii are also extracted by fitting the two-proton momentum correlation functions,

and the results are consistent with the above conclusions.}, doi = {10.12074/202306.00619V1}, url = {https://chinaxiv.org/abs/202306.00619}, timestamp = {2024-08-04}, }