DAMA暗物质实验本底问题的研究

Studies on the Backgrounds of DAMA Experiments

文章介绍中意合作DAMA组 10 0kgNaI(Tl)晶体阵列实验结果 ,重点探讨了可能影响探测实验结果的多种因素 .通过蒙特卡罗模拟计算 ,北京组得到了探测晶体阵列内部的放射性杂质的本底贡献 ,它们与本底的实验结果一致 .另外 ,模拟计算结果表明 ,快中子、太阳中微子等对本底的贡献很小 。

Some results have been introduced on China-Italy DAMA cooperation--100kg NaI(Tl) crystal set-up experiments. There are lots of background problems need to be studied carefully, which would affect the results of DAMA experiments. Here, the radiation backgrounds in 100kg NaI(Tl) set-up have been studied by Beijing Group, and the Monte-Carlo simulation results are in good coincidence with the measurement of DAMA experiments. In addition, the contribution coming from fast neutrons' or solar neutrinos' interactions have been obtained through the simulation, which made very small effects on the experiments.