Fig. 1. Simulation diagram by MCNP.MCNP模拟示意图

Fig. 2. Neutron flux at different thicknesses simulated by MCNP.MCNP模拟不同厚度处中子通量

Fig. 3. Neutron spectrum simulated by MCNP.MCNP模拟不同样品厚度处中子能谱

Fig. 4. The reaction cross section of (n, p)^[20]. (n, p)反应截面^[20]

Fig. 5. The relation between count rate of radiation and thickness of samples.两条特征γ射线的出射率与样品的厚度的关系

Fig. 6. The relationship between neutron flux and sample thickness.中子通量与样品厚度的关系

Fig. 7. The reaction cross section of (n, p)^[21]. (n, p)反应截面^[21]

Fig. 8. Measurement of gamma energy spectra of different samplesby sodium iodide detector.碘化钠探测器测量不同样品γ能谱

Fig. 9. The relation between count rate of radiation and thickness of quality score 10% sampleγ射线的计数与质量分数10%样品厚度的关系