For diagnostics of confined and escaping particles in burning plasma, we have proposed to apply the measurements of the gamma rays from D(,)6Li and 19F(,n)22Na nuclear reactions and verified the validity to the diagnostics by accelerator experiments. From our experiments, we obtained the properties of the emitted gamma rays and some prospects for the diagnostics on ITER-like plasma based on their measurements. This paper discusses the spectrum properties of the emitted gamma rays and their applications to particles diagnostics.