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| 1 | Production of radioactive ~9C ion beam and its optimization显示文摘To explore the medical use of a radioactive 9C-ion beam in tumor treatment, which is a double radiation source coming from the external beam itself and the delayed particles emitted internally, some physical experiments are performed at the Secondary Beam Line (SBL) of Heavy Ion Medical Accelerator, Chiba (HIMAC) in Japan be- fore radiobiological research for exhibiting therapeutic value of the 9C beam. Intention of the experiments is for pro- ducing a radioactive 9C-ion beam with higher production rate and purity by means of optimizing the beam line pa- rameters. Finally, a produced 9C beam with the production rate of 9.07×10-6 and purity of 82.88% at full momentum acceptance has been obtained under the optimal conditions of 40 mm-thick beryllium target and 10 mm-thick alumi- num degrader. Both momentum distribution and contaminations for the produced 9C beam under the optimal condi- tions are measured. In order to execute further biological experiments of the 9C beam project, a uniform irradiation field is made with the wobbling magnets and its homogeneity is up to 93.8% inside central area of 20mm in diameter. | WEIZeng-Quan LIQiang A.KITAGAWA T.KANAI M.KANAZAWA E.URAKABE XIEHong-Mei ZHOUGuang-Ming | 2005 | Nuclear Science and Techniques2005，16，2： | 3 |
| 2 | 放射性离子束^(9)C的细胞生物学效应显示文摘首先介绍了重离子束治癌的特点及当前的技术进步, 着重讨论了放射性离子束(RIB)在肿瘤治疗上增添的优势, 详细叙述了在日本放射医学综合研究所(NIRS)重离子医用加速器(HIMAC)上旨在肿瘤治疗的放射性离子束 C 的实验研究, 包括束流产生、参数优化、深度物理剂量分布、细胞辐照后的存 9活效应以及 C 和 C 束的相对生物效率(RBE)比较. 最终结果: 在40 mm 厚铍靶、10 mm 厚铝降能器、 9 125%动量接收度时, 采用 430 MeV/u、1.8×109 粒子/s 的初试束 C, 得到的 C 束的产生率为 9.07×10?6, 12 9纯度为 82.88%, 采用点扫描技术时, 在直径为 10 mm 的中心面积内, 可获得均匀度为 89.6%的辐照场,这时在入口处的剂量率为0.5Gy/h. 在Bragg峰附近范围内的细胞存活实验中, C束的平均RBE为5.28, 9而 C 束的平均 RBE 为 2.93, C 束的 RBE 要比 C 束的高1.8 倍, 这显示 C 束在 Bragg 峰附近范围内, 12 9 12 9对细胞的杀伤力要比 C 强, 在肿瘤治疗上会更有效. | 卫增泉 李强 A.Kitagawa T.Kanai M.Kanazawa Y.Furusawa E.Urakabe 颉红梅 周光明 | 2005 | 科学通报2005，50，5： | 2 |
| 3 | Biological effects of radioactive ~9C-ion beams on cells显示文摘The distinguishing feature and current technique progress of tumor treatment with heavy-ion beams is introduced in the paper. Additional superiority to tumor treatment from a radioactive ion beam (RIB) is emphatically discussed. The experimental research of the radioactive 9C-ion beams aimed at tumor treatment at Heavy Ion Medical Accelerator in Chiba (HIMAC), National Institute of Radiological Sciences (NIRS), Japan is described in detail, La-eluding production of the beams, optimization of parameters, distribution of depth dose, survival effect of cell and comparison of RBE between 9C- and 12C-beams. Results show that under 40 mm thick Beryllium target and 10 mm thick aluminum degrader at full (5%) momentum acceptance, the production rate and purity of the produced 9C-beams are 9.07×10-6 and 82.88% respectively with the primary 12C-beams of 430 MeV/u and 1.8×109 pps. A uniform irradiation field with homogeneity up to 89.6% inside central area 10 mm in diameter is obtained by using spot scanning. In this case, the dose rate at the entrance is 0.5 Gy/h. In survival experiment of cells, the average relative biological effectiveness (RBE) of 9C-beams is 5.28 and 2.93 for 12C-beams in the region around Bragg peak. The RBE of 9C-beams is 1.8 times higher than that of 12C-beams. It indicates that cell-killing efficiency of 9C-beams is stronger than that of 12C-beams. 9C-beams are more efficacious for tumor treatment than 12C-beams. | WEIZengquan LIQiang A.Kitagawa T.Kanai M.Kanazawa Y.Furusawa E.Urakabe XIEHongmei ZHOUGuangming | 2005 | Chinese Science Bulletin2005，50，11： | 2 |
| 4 | 任意三角形网格的变形显示文摘 | T.Kanai H.Suzuki和F.Kimura | 2000 | IEEE计算机图形&应用2000，20，2： | 1 |
| 5 | 喷射鼓泡烟气脱硫显示文摘<正> 本法的特点是投资与操作费用低,操作容易而稳定,没有结垢问题。湿式烟气脱硫装置的液一气比是一个重要的参数。液体流量主要是影响传质,要保证有足够的气液界面。在石灰/石灰石法中,还要提供适当的反应物表面积并保证一定的冲刷作用来控制结垢问题。要求浆液循环速率在20—100加仑/1000尺~3左右,视所用的吸收塔类型而定。石灰/石灰石工艺的趋势是液气比L/G愈来愈大,虽然这样势必增加投资与运行费用。其结果是,用在浆液中分散气泡的方法受到了人们的注意。这个方法需要一种气体分布装置,使‘轻’的气泡均匀地通过‘重’的液体。气泡的行为与流动情况决定传质情况。 | H.Idemura T.Kanai H.Yanagioka 江研因 | 1979 | 环境科学研究1979，，5： | 0 |
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