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| Therefore, the apparent diffusion coefficient Da value decreases with the increasing of dry density. For example, the Da of 99Tc decreases from 69 to 1.0 ¡Á10-11 m2/s when bulk density is increased from 200 to 2000 kg/m3 [12], and Da of Se decreases from 43 to 3.2 ¡Á10-11 m2/s when density change from 400 to 1800 kg/m3 [13]. However, as far as we know, the diffusion of 99Tc and Se diffusion are investigated at dry density in the range from 800 to 1800 kg/m3, the study high density like 2000 kg/m3 is absence. Previous study, HTO and 125I have studies at dry density from 1600 to 2000 kg/m3 [4, 14] in GMZ. Re(as analogue to 99Tc) and Se have investigated at 1300 kg/m3 as well [15]. In this study, the diffusion behaviors of Re and Se are studied at 2000 kg/m3 density in order to enrich the diffusion database in HLW. Out- diffusion method was employed to check the correction of the obtained diffusion parameters. |
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773115293: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл£¡£¡£¡£¡£¡ 2015-10-13 13:18:45
773115293: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл£¡£¡£¡£¡£¡ 2015-10-13 13:18:45
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