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1. The experiment is performed at the HI-13 Tandem Accelerator Nuclear Physics National Laboratory of China Institute of Atomic Energy. The DNA samples in TE-buffer are irradiated with dose of 10Gy. The number of shorter fragments of linear form DNA irradiated by high-LET ions is largerthan by low-LET ions. It shows that high-LET radiation induces DSBs more.
利用HI-13串列加速器产生的两种能量的重离子~7Li，对DNA溶液和添加自由基清除剂甘露醇的DNA溶液分别进行了辐照，并通过原子力显微镜观察，发现在相同剂量下，DNA样品经过高LET的离子照射后的碎片中短碎片比低LET情况明显增多，说明高LET值的重离子更容易诱发DNA双链断裂。
2. The result shows: the period of the atomic inversionis decreasing with the increase of the Kerr effect When the initialcoherent field is not great (n=10), the periodicity of the atomic state evolution is destroyed by Kerr effect, otherwise, when the initial coherent field is great (n=50), the atomic state evolution has periodicity approximately, also, the period is the same as atomic inversion Whether the average photon number of the initial coherent field is greator small, the probability that the atom locates initial state is increasing with the increase ofthe Kerr effect, when x/g=5, the atom always locates initial excited state nearly.
结果表明：克尔效应的增强使得原子反转演化的周期减小(gtR≈π/x2/g2+1)；在初始相干光场较弱时(n=10)，克尔介质的非线性相互作用破坏了原子态演化的周期性，但在初始相干光场较强时(n=50)，克尔效应使？犹难莼越凭哂兄芷谛？且与原子反转演化的周期相同(gtR≈π/x2g2+1)。无论初始相干光场强弱如何，随着克尔效应的增强，原子回到初态的布居几率增大，当x/g=5时，原子几乎持续地处于初始的激发态。标签 Kerr效应密度算符间的距离原子反转原子量子态的演化 Kerr medium distance between density operator atomic inversion atomic state evolution
3. Experimental result shows possibility of usage of LCIS op erating in dual energy mode in 5-10 MeV energy range for recognition of groups of materials according to their effective atomic number.
实验结果表明，在5-10MeV的能量范围内，大型集装箱检测系统利用双能X射线技术根据有效原子序数识别材料组是可行的。