国家自然科学基金(10775063)

作品数:8被引量:5H指数:1
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相关作者:陈熙萌徐俊奎席发元王兴安丁宝卫更多>>
相关机构:兰州大学中国科学院近代物理研究所中国科学院兰州物理研究所更多>>
相关期刊:《物理学报》《原子核物理评论》《Chinese Physics B》更多>>
相关主题:GUIDINGMEMBRANEKEVIONSCROSS-SECTION更多>>
相关领域:理学医药卫生核科学技术化学工程更多>>
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Transmission of 18 keV negative ions Cl^-through nanocapillariesin Al_2O_3 membrane
《Chinese Physics B》2011年第1期316-321,共6页吕学阳 陈林 陈熙萌 贾娟娟 周鹏 周春林 邱玺玉 邵剑雄 崔莹 尹永智 王宏伟 姬明超 
Project supported by the National Natural Science Foundation of China(Grant No.10775063)
We investigate the angular distribution of the transmitted 18keV negative ions Cl- through Al2O3 nanocapillaries of 50 nm in diameter and 10 μm in length. Elastic scattering ions and inelastic scattering ions are obt...
关键词:nanocapillaries negative ions angular distribution guiding effect 
Experimental study of cross-section ratios in the collisions of C^(q+) and O^(q+) (q=1-4) on atomic helium in strong-interaction region被引量:1
《Chinese Physics B》2011年第1期322-327,共6页陈熙萌 江丽娟 周鹏 周春林 高志民 邱玺玉 崔莹 王兴安 娄凤君 吕学阳 贾娟娟 陈林 邵剑雄 吕瑛 王幡 
Project supported by the National Natural Science Foundation of China(Grant No.10775063)
We have measured the cross-section ratios of helium induced by Cq+ and Oq+ (q = 1-4) in an energy range from 20 keV/amu to 500 keV/amu, and obtained the two-dimensional spectra by employing the coincidence method ...
关键词:ion-atom collisions strong-interaction region cross-section ratios competitive relation 
Al_2O_3微孔膜对60keV O^+离子的“导向”效应
《物理学报》2010年第1期222-226,共5页陈益峰 陈熙萌 娄凤君 徐进章 绍剑雄 孙光智 王俊 席发元 尹永智 王兴安 徐俊奎 崔莹 丁宝卫 
国家自然科学基金(批准号:10775063)资助的课题~~
在不同入射角度条件下,研究了60keV的O+离子入射孔径分别为50nm和30nm,厚度为10μmAl2O3微孔膜的角分布.实验结果表明离子透射微孔膜时发生了导向效应,随着入射角度的增大,透射于孔径大的微孔膜离子计数下降比较快,透射于孔径小的微孔...
关键词:微孔膜 孔径 导向效应 入射角 
Guided transmission of oxygen ions through Al_2O_3 nanocapillaries被引量:1
《Chinese Physics B》2009年第7期2739-2743,共5页陈益峰 陈熙萌 娄凤君 徐进章 邵剑雄 孙光智 王俊 席发元 尹永智 王兴安 徐俊奎 崔莹 丁宝卫 
Project supported by the National Natural Science Foundation of China (Grant No 10775063)
The transmissions of oxygen ions through Al2O3 nanocapillaries each 50 nm in diameter and 10 μm in length at a series of different tilt angles are measured, where the ions with energies ranging from 10 to 60 keⅤ and...
关键词:capillary guiding tilt angle energy dependence charge state dependence 
医用质子和^12C离子束的物理性质研究被引量:3
《原子核物理评论》2009年第2期163-167,共5页徐俊奎 党秉荣 陈熙萌 李文建 刘全婷 
国家自然科学基金资助项目(10775063)~~
质子和重离子在现代放射治疗手段中已起着不可替代的作用,这主要取决于其独特的物理性质。利用一步过程和两步过程的物理模型解释了离子能量损失的机制,同时结合Geant4软件包模拟质子和12C在水中的运输过程,研究了离子束的物理性质,并...
关键词:物理性质 Bragg峰 放射治疗 
Guiding of 150 keV O^(6+) ions through nanocapillaries in an uncoated Al_2O_3 membrane:special time dependence of the transmission profile width被引量:1
《Chinese Physics B》2009年第5期1955-1960,共6页陈熙萌 席发元 邱玺玉 邵剑雄 肖国青 崔莹 孙光智 王俊 陈益峰 刘会平 尹永智 王瑜玉 李德慧 娄凤君 王兴安 徐俊奎 周春林 
supported by the National Natural Science Foundation of China(Grant No 10775063)
This paper reports that the transmission of O6+ ions with energy of 150keV through capillaries in an uncoated Al2O3 membrane was measured, and agreements with previously reported results in general angular distributi...
关键词:guiding effect Al2O3 nanocapillaries uncoated membrane transmission profile width 
强扰动能区非全裸C^(q+),O^(q+)(q=1—4)与He原子碰撞过程中截面比的实验研究
《物理学报》2009年第8期5342-5349,共8页周春林 邵剑雄 陈熙萌 高志民 王俊 孙光智 席发元 陈益峰 陈林 丁宝卫 王兴安 娄凤君 徐俊奎 邱玺玉 王幡 吕瑛 
国家自然科学基金(批准号:10775063)资助的课题~~
利用兰州大学2×1.7MV串列加速器离子-原子碰撞实验终端上产生的单核子能量为20—500keV的Cq+和Oq+(q=1—4)离子与He原子碰撞.采用符合测量方法和多参数数据获取系统得到了散射离子与反冲离子电荷态的二维谱,从而分别得到直接电离、入...
关键词:离子-原子碰撞 截面比 竞争关系 强扰动区 
The direct ionization processes in the collisions of partially stripped carbon and oxygen ions with helium atoms at low-to-intermediate energies
《Chinese Physics B》2008年第11期4193-4198,共6页周春林 邵剑雄 陈熙萌 孙光智 邹贤容 
Project supported by the National Natural Science Foundation of China (Grant No 10775063)
The values of direct double- to-single ionization ratio R of helium atoms induced by C^q+, O^q+ (q = 1 -4) ions at incident energies from 0.2 to 8.5MeV are measured. Based on the existing model (Shao J X, Chen X ...
关键词:effective charge partially stripped ions cross-section ratio direct ionization 
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