-
在兰州重离子加速器国家实验室, 利用硅漂移X射线探测器探测了4.5 MeV I20+离子入射到Fe, Co, Ni, Cu, Zn靶表面时产生I的L壳层X射线. 实验观察到Lι, Lα1, 2, Lβ1, 3, 4, Lβ2, 15, Lγ1, Lγ2, 3, 4, 4' 等6组分辨较好的谱线, 各分支X射线的能量发生了蓝移; Lβ1, 3, 4, Lβ2, 15与Lα1, 2谱线的相对强度比随靶原子序数的增大基本线性增加, Lι与Lα1, 2, Lγ2, 3, 4, 4' 与Lγ1 X射线的相对强度比近似与靶原子序数的平方成正比. 分析表明, 玻尔速度附近能量的低速高电荷态离子与固体靶原子碰撞产生的内壳层过程存在直接库仑电离和电子俘获的双重综合作用, 这使得内壳层X射线发射时, 外壳层仍存在多个空穴, 导致辐射X射线的频移和分支比的变化.The L-shell X-ray emissions of iodine are investigated as a function of target atomic number for 4.5-MeV I20+ ions impacting on Fe, Co, Ni, Cu and Zn targets. Six distinct L-subshell X-rays are observed. The energy of the x-ray has a blue shift compared with the atomic data. The relative intensity ratio of Lβ1, 3, 4 and Lβ2, 15 to Lα1, 2 almost increase linearly with the target atomic number increasing. The ratio of I(Lι) to I(Lα1, 2) and I (Lγ2, 3, 4, 4') to I(Lγ1) are approximately proportional to the square of target atomic number. It is indicated that during the interaction of highly charged heavy ions with atom in the energy region near the Bohr velocity, the inner-shell process is mainly caused by the close-range collisions below the surface. There, the projectile not only has enough time to capture electrons from the target atom to be neutralized, but also has enough kinetic energy to ionize the inner-shell electron by coulomb interaction. At the balance between electron capture and ionization, the outer-shells of M, N, O etc. could be multiply ionized. The extent of multiple ionization increases with the target atomic number increasing. That leads to the energy shift, resulting in the change of the relative intensity ratio for the L-subshell X-ray. The smaller the atomic fluorescence, the larger the enhanced fluorescence caused by multiple ionization.
-
Keywords:
- ion-atom collision /
- X-ray /
- multiple ionization
[1] Siddique N, Waheed S, Daud M, Markwitz A, Hopke P K 2012 J. Radioanal. Nucl. Chem. 293 351
Google Scholar
[2] Mitra D, Sarkar M, Bhattacharya D, Santra S, Mandal A C, Lapicki G 2010 Nucl. Instrum. Methods B 268 450
Google Scholar
[3] Reyes-Herrera J, Miranda J 2009 Nucl. Instrum. Methods B 267 1767
[4] Beasley D, Gomez-Morilla I, Spyrou N 2008 J. Radioanal. Nucl. Chem. 276 101
Google Scholar
[5] Schenkel T, Hamza A V, Barnes A V, Schneider D H 1999 Surf. Sci. Rep. 61 23
[6] Zhou X M, Cheng R, Zhao Y T, Lei Y, Chen Y H, Chen X M, Wang Y Y, Ma X W, Xiao G Q 2018 Nucl. Instrum. Methods B 416 94
[7] Whilhelm R A, Gruber E, Schwestka J, Kozubek R, Madeira T I, Marques J P, Kobus J, Krasheninnikov A V, Schleberger M, Aumayr F 2017 Phys. Rev. Lett. 119 103401
[8] Guo Y P, Yang Z H, Hu B T, Wang X L, Song Z Y, Xu Q M, Zhang B L, Chen J, Yang B, Yang J 2016 Sci. Rep. 6 30644
[9] Mohan H, Jain A K, Kaur M, Singh P S, Sharma S 2014 Nucl. Instrum. Methods B 332 103
[10] Merlet C, Llovet X, Salvat F 2004 Phys. Rev. A 69 032708
[11] 柳钰, 徐忠锋, 王兴, 曾利霞, 刘婷 2020 物理学报 69 043201
Google Scholar
Liu Y, Xu Z F, Wang X, Zeng L X, Liu T 2020 Acta Phys. Sin. 69 043201
Google Scholar
[12] 梁昌慧, 张小安, 李耀宗, 赵永涛, 周贤明, 王兴, 梅策香, 肖国青 2018 物理学报 67 243201
Google Scholar
Liang C H, Zhang X A, Li Y Z, Zhao Y T, Zhou X M, Wang X, Mei C X, Xiao G Q 2018 Acta Phys. Sin. 67 243201
Google Scholar
[13] 梅策香, 张小安, 周贤明, 赵永涛, 任洁茹, 王兴, 雷瑜, 孙渊博, 程锐, 徐戈, 曾利霞 2017 物理学报 66 143401
Google Scholar
Mei C X, Zhang X A, Zhou X M, Zhao Y T, Ren J R, Wang X, Lei Y, Sun Y B, Cheng R, Xu G, Zeng L X 2017 Acta Phys. Sin. 66 143401
Google Scholar
[14] 张小安, 梅策香, 张颖, 赵永涛, 徐忠峰, 周贤明, 任洁茹, 程锐, 梁昌慧, 李耀宗, 曾丽霞, 杨治虎, 陈熙萌, 李福利, 肖国庆 2016 中国科学: 物理学 力学 天文学 46 073006
Zhang X A, Mei C X, Zhang Y, Zhao Y T, Xu Z F, Zhou X M, Ren J R, Cheng R, Liang C H, Li Y Z, Zeng L X, Yang Z H, Chen X M, Li F L, Xiao G Q 2016 Sci. Sin.-Phys. Mech. Astron. 46 073006
[15] 何斌, 刘春雷, 颜君, 王建国, 宁烨 2005 物理学报 54 3075
Google Scholar
He B, Liu C L, Yan J, Wang J G, Ning Y 2005 Acta Phys. Sin. 54 3075
Google Scholar
[16] Briand J P, Billy L, Charles P, Essabaa S 1990 Phys. Rev. Lett. 65 159
[17] Briand J P, de Billy L, Charles P, et al. 1991 Phys. Rev. A 43 565
Google Scholar
[18] Briand J P, Thuriez S, Giardino G, Borsoni G, Froment M, Eddrief M, Sébenne C 1996 Phys. Rev. Lett. 77 1452
[19] Burgdörfer J, Lerner P, Meyer F W 1991 Phys. Rev. A 44 5674
Google Scholar
[20] Mcguire J H, Richards P 1973 Phys. Rev. A 8 1374
[21] Johnson D E, Basbas G, McDaniel F D 1979 At. Data Nucl. Data tables 24 1
[22] Lapicki G, Mcdaniel F D 1980 Phys. Rev. A 22 1896
Google Scholar
[23] Słabkowska K, Polasik M 2006 Radiat. Phys. Chem. 75 1471
[24] Czarnota M, Pajek M, Banas D, Chmielewska D, Rzadkiewicz J, Sujkowski Z, Dousse J C, Berset M, Mauron O, Maillard Y P, Raboud P A, Hoszowska J, Polasik M, łabkowska K S 2003 Nucl. Instrum. Methods B 205 133
[25] Clark M W, Schneider D, Dewitt D, McDonald J W, Bruch R, Schuch R 1993 Phys. Rev. A 47 3983
Google Scholar
[26] Zhao Y, Xiao G, Zhang X, Yang Z, Zhang Y, Zhan W, Chen X, Li F 2007 Nucl. Instrum. Methods B 258 121
[27] Datz S, Moak C D, Appleton B R, Carlson T A 1971 Phys. Rev. Lett. 27 363
[28] X-ray data book: http://xdb.lbl.gov/; Table of Isotopes: http://ie.lbl.gov/atom.htm
[29] Krause M O 1979 J. Phys. Chem. Ref. Data. 8 307
[30] Crawford J, Cohen D, Doherty G, Atanacio A 2011 Calculated K, L and M-shell X-ray Line Intensities for Light ion Impact on Selected Targets from Z = 6 to 100 (Sydney: Australian Nuclear Science and Technology Organization) pp29−44
-
图 1 4.5 MeV I20+离子作用于不同靶材激发的L壳层X射线. 虚线为各分支谱线的拟合, 实线为总的实验谱线的拟合结果
Fig. 1. I L-shell X-ray induced by 4.5 MeV I20+ ions impacting on various targets. The dotted line is the fitted results of sub-shell X ray. Line is the fitted results of the total experiment spectra.
图 3 I的Lβ1, 3, 4与Lα1, 2 X射线相对强度比随靶原子序数的变化
Fig. 3. Relative intensity ratios of I Lβ1, 3, 4 and Lα1, 2 x-ray as a function of target atomic number.
图 6 I的Lγ2, 3, 4, 4' 与Lγ1X射线相对强度比随靶原子序数的变化
Fig. 6. Relative intensity ratios of I Lγ2, 3, 4, 4' and Lγ1 X-ray as a function of target atomic number.
图 4 I的Lβ2, 15与Lα1, 2 X射线相对强度比随靶原子序数的变化
Fig. 4. Relative intensity ratios of I Lβ2, 15 and Lα1, 2 X-ray as a function of target atomic number.
图 5 I的Lι与Lα1, 2 X射线相对强度比随靶原子序数的变化
Fig. 5. Relative intensity ratios of I Lι and Lα1, 2 X-ray as a function of target atomic number.
表 1 4.5 MeV I20+离子作用于不同靶材产生I的L壳层分支X射线能量, 作为对比, 第一行给出了单电离的原子数据, 实验误差主要来源于谱线的拟合误差
Table 1. The energies of I L-subshell X-ray produced by 4.5 MeV I20+ ions impacting on various targets.
Lι/eV ± 3 eV Lα1, 2/eV ± 3 eV Lβ1, 3, 4/eV ± 5 eV Lβ2, 15/eV ± 5 eV Lγ1/eV ± 7 eV Lγ2, 3, 4, 4' /eV ± 9 eV Atomic[28] 3485 3937 4227 4508 4802 5065 Fe 3532 3966 4293 4631 4898 5192 Co 3529 3968 4293 4630 4904 5196 Ni 3532 3967 4292 4627 4896 5196 Cu 3529 3968 4297 4631 4909 5200 Zn 3529 3969 4299 4639 4907 5207 Average 3530 3968 4295 4632 4902 5198 
下载: 导出CSV
-
[1] Siddique N, Waheed S, Daud M, Markwitz A, Hopke P K 2012 J. Radioanal. Nucl. Chem. 293 351
Google Scholar
[2] Mitra D, Sarkar M, Bhattacharya D, Santra S, Mandal A C, Lapicki G 2010 Nucl. Instrum. Methods B 268 450
Google Scholar
[3] Reyes-Herrera J, Miranda J 2009 Nucl. Instrum. Methods B 267 1767
[4] Beasley D, Gomez-Morilla I, Spyrou N 2008 J. Radioanal. Nucl. Chem. 276 101
Google Scholar
[5] Schenkel T, Hamza A V, Barnes A V, Schneider D H 1999 Surf. Sci. Rep. 61 23
[6] Zhou X M, Cheng R, Zhao Y T, Lei Y, Chen Y H, Chen X M, Wang Y Y, Ma X W, Xiao G Q 2018 Nucl. Instrum. Methods B 416 94
[7] Whilhelm R A, Gruber E, Schwestka J, Kozubek R, Madeira T I, Marques J P, Kobus J, Krasheninnikov A V, Schleberger M, Aumayr F 2017 Phys. Rev. Lett. 119 103401
[8] Guo Y P, Yang Z H, Hu B T, Wang X L, Song Z Y, Xu Q M, Zhang B L, Chen J, Yang B, Yang J 2016 Sci. Rep. 6 30644
[9] Mohan H, Jain A K, Kaur M, Singh P S, Sharma S 2014 Nucl. Instrum. Methods B 332 103
[10] Merlet C, Llovet X, Salvat F 2004 Phys. Rev. A 69 032708
[11] 柳钰, 徐忠锋, 王兴, 曾利霞, 刘婷 2020 物理学报 69 043201
Google Scholar
Liu Y, Xu Z F, Wang X, Zeng L X, Liu T 2020 Acta Phys. Sin. 69 043201
Google Scholar
[12] 梁昌慧, 张小安, 李耀宗, 赵永涛, 周贤明, 王兴, 梅策香, 肖国青 2018 物理学报 67 243201
Google Scholar
Liang C H, Zhang X A, Li Y Z, Zhao Y T, Zhou X M, Wang X, Mei C X, Xiao G Q 2018 Acta Phys. Sin. 67 243201
Google Scholar
[13] 梅策香, 张小安, 周贤明, 赵永涛, 任洁茹, 王兴, 雷瑜, 孙渊博, 程锐, 徐戈, 曾利霞 2017 物理学报 66 143401
Google Scholar
Mei C X, Zhang X A, Zhou X M, Zhao Y T, Ren J R, Wang X, Lei Y, Sun Y B, Cheng R, Xu G, Zeng L X 2017 Acta Phys. Sin. 66 143401
Google Scholar
[14] 张小安, 梅策香, 张颖, 赵永涛, 徐忠峰, 周贤明, 任洁茹, 程锐, 梁昌慧, 李耀宗, 曾丽霞, 杨治虎, 陈熙萌, 李福利, 肖国庆 2016 中国科学: 物理学 力学 天文学 46 073006
Zhang X A, Mei C X, Zhang Y, Zhao Y T, Xu Z F, Zhou X M, Ren J R, Cheng R, Liang C H, Li Y Z, Zeng L X, Yang Z H, Chen X M, Li F L, Xiao G Q 2016 Sci. Sin.-Phys. Mech. Astron. 46 073006
[15] 何斌, 刘春雷, 颜君, 王建国, 宁烨 2005 物理学报 54 3075
Google Scholar
He B, Liu C L, Yan J, Wang J G, Ning Y 2005 Acta Phys. Sin. 54 3075
Google Scholar
[16] Briand J P, Billy L, Charles P, Essabaa S 1990 Phys. Rev. Lett. 65 159
[17] Briand J P, de Billy L, Charles P, et al. 1991 Phys. Rev. A 43 565
Google Scholar
[18] Briand J P, Thuriez S, Giardino G, Borsoni G, Froment M, Eddrief M, Sébenne C 1996 Phys. Rev. Lett. 77 1452
[19] Burgdörfer J, Lerner P, Meyer F W 1991 Phys. Rev. A 44 5674
Google Scholar
[20] Mcguire J H, Richards P 1973 Phys. Rev. A 8 1374
[21] Johnson D E, Basbas G, McDaniel F D 1979 At. Data Nucl. Data tables 24 1
[22] Lapicki G, Mcdaniel F D 1980 Phys. Rev. A 22 1896
Google Scholar
[23] Słabkowska K, Polasik M 2006 Radiat. Phys. Chem. 75 1471
[24] Czarnota M, Pajek M, Banas D, Chmielewska D, Rzadkiewicz J, Sujkowski Z, Dousse J C, Berset M, Mauron O, Maillard Y P, Raboud P A, Hoszowska J, Polasik M, łabkowska K S 2003 Nucl. Instrum. Methods B 205 133
[25] Clark M W, Schneider D, Dewitt D, McDonald J W, Bruch R, Schuch R 1993 Phys. Rev. A 47 3983
Google Scholar
[26] Zhao Y, Xiao G, Zhang X, Yang Z, Zhang Y, Zhan W, Chen X, Li F 2007 Nucl. Instrum. Methods B 258 121
[27] Datz S, Moak C D, Appleton B R, Carlson T A 1971 Phys. Rev. Lett. 27 363
[28] X-ray data book: http://xdb.lbl.gov/; Table of Isotopes: http://ie.lbl.gov/atom.htm
[29] Krause M O 1979 J. Phys. Chem. Ref. Data. 8 307
[30] Crawford J, Cohen D, Doherty G, Atanacio A 2011 Calculated K, L and M-shell X-ray Line Intensities for Light ion Impact on Selected Targets from Z = 6 to 100 (Sydney: Australian Nuclear Science and Technology Organization) pp29−44
-
[1] 梅策香, 张小安, 周贤明, 梁昌慧, 曾利霞, 张艳宁, 杜树斌, 郭义盼, 杨治虎. 类氦C离子诱发不同金属厚靶原子的K-X射线. 物理学报, 2024, 73(4): 043201. doi: 10.7498/aps.73.20231477 [2] 周贤明, 尉静, 程锐, 梁昌慧, 陈燕红, 赵永涛, 张小安. 近玻尔速度不同离子碰撞产生Al的K X射线. 物理学报, 2023, 72(1): 013402. doi: 10.7498/aps.72.20221628 [3] 周贤明, 尉静, 程锐, 梅策香, 曾利霞, 王兴, 梁昌慧, 赵永涛, 张小安. 数百MeV/u高能区C6+离子激发W的L壳层 X射线. 物理学报, 2022, 71(11): 113201. doi: 10.7498/aps.70.20212322 [4] 周贤明, 尉静, 程锐, 梅策香, 曾利霞, 王兴, 梁昌慧, 赵永涛, 张小安. 数百MeV/u高能区C6+离子激发W的L X射线研究. 物理学报, 2022, 0(0): 0-0. doi: 10.7498/aps.71.20212322 [5] 张秉章, 宋张勇, 刘璇, 钱程, 方兴, 邵曹杰, 王伟, 刘俊亮, 徐俊奎, 冯勇, 朱志超, 郭艳玲, 陈林, 孙良亭, 杨治虎, 于得洋. 低能高电荷态 ${\boldsymbol{ {\rm{O}}^{q+}}}$ 离子与Al表面作用产生的X射线. 物理学报, 2021, 70(19): 193201. doi: 10.7498/aps.70.20210757[6] 李瑶, 苏桐, 雷凡, 徐能, 盛立志, 赵宝升. 等离子体中X射线透过率分析及潜在通信应用研究. 物理学报, 2019, 68(4): 040401. doi: 10.7498/aps.68.20181973 [7] 梁昌慧, 张小安, 李耀宗, 赵永涛, 周贤明, 王兴, 梅策香, 肖国青. 不同离子激发Au靶的多电离效应. 物理学报, 2018, 67(24): 243201. doi: 10.7498/aps.67.20181642 [8] 梅策香, 张小安, 周贤明, 赵永涛, 任洁茹, 王兴, 雷瑜, 孙渊博, 程锐, 徐戈, 曾利霞. 高能脉冲C6+离子束激发Ni靶的K壳层X射线. 物理学报, 2017, 66(14): 143401. doi: 10.7498/aps.66.143401 [9] 周贤明, 赵永涛, 程锐, 雷瑜, 王瑜玉, 任洁茹, 刘世东, 梅策香, 陈熙萌, 肖国青. 近玻尔速度氙离子激发钒的K壳层X射线. 物理学报, 2016, 65(2): 027901. doi: 10.7498/aps.65.027901 [10] 周贤明, 赵永涛, 程锐, 王兴, 雷瑜, 孙渊博, 王瑜玉, 徐戈, 任洁茹, 张小安, 梁昌慧, 李耀宗, 梅策香, 肖国青. H+和Ar11+激发Si的K壳层X射线发射研究. 物理学报, 2013, 62(8): 083201. doi: 10.7498/aps.62.083201 [11] 张小安, 李耀宗, 赵永涛, 梁昌慧, 程锐, 周贤明, 王兴, 雷瑜, 孙渊博, 徐戈, 李锦玉, 肖国青. Arq+入射金表面激发靶原子M-X射线的动能和势能的阈值. 物理学报, 2012, 61(11): 113401. doi: 10.7498/aps.61.113401 [12] 王兴, 赵永涛, 程锐, 周贤明, 徐戈, 孙渊博, 雷瑜, 王瑜玉, 任洁茹, 虞洋, 李永峰, 张小安, 李耀宗, 梁昌慧, 肖国青. 重离子轰击Ta靶引起的多电离效应. 物理学报, 2012, 61(19): 193201. doi: 10.7498/aps.61.193201 [13] 邹贤容, 邵剑雄, 陈熙萌, 崔莹. 高电荷态Ar17+离子在表面以下过程中发射X射线分支比及各分支能量的研究. 物理学报, 2010, 59(9): 6064-6070. doi: 10.7498/aps.59.6064 [14] 朱小龙, 马新文, 李斌, 冯文天, 张少锋, 刘惠萍, 钱东斌, 张大成. 低能He2+-He碰撞体系转移电离机理的实验研究. 物理学报, 2010, 59(1): 620-624. doi: 10.7498/aps.59.620 [15] 张泊丽, 杨治虎, 杜树斌, 常宏伟, 薛迎丽, 宋张勇, 朱可欣, 田野. 20—50MeV O5+离子引起Au的L壳层X射线产生截面研究. 物理学报, 2009, 58(9): 6113-6116. doi: 10.7498/aps.58.6113 [16] 张小安, 杨治虎, 王党朝, 梅策香, 牛超英, 王伟, 戴斌, 肖国青. 类钴氙离子入射Ni表面激发的红外光谱线和X射线谱. 物理学报, 2009, 58(10): 6920-6925. doi: 10.7498/aps.58.6920 [17] 杨治虎, 宋张勇, 崔 莹, 张红强, 阮芳芳, 邵剑雄, 杜 娟, 刘玉文, 朱可欣, 张小安, 邵曹杰, 卢荣春, 于得洋, 陈熙萌, 蔡晓红. Ar16+和Ar17+离子与Zr作用产生的X射线谱. 物理学报, 2008, 57(2): 803-807. doi: 10.7498/aps.57.803 [18] 杨治虎, 宋张勇, 陈熙萌, 张小安, 张艳萍, 赵永涛, 崔 莹, 张红强, 徐 徐, 邵健雄, 于得洋, 蔡晓红. 高电荷态离子Arq+与不同金属靶作用产生的X射线. 物理学报, 2006, 55(5): 2221-2227. doi: 10.7498/aps.55.2221 [19] 赵永涛, 肖国青, 张小安, 杨治虎, 陈熙萌, 李福利, 张艳萍, 张红强, 崔 莹, 绍剑雄, 徐 徐. 空心原子的K-x射线谱. 物理学报, 2005, 54(1): 85-88. doi: 10.7498/aps.54.85 [20] 杨国洪, 张继彦, 张保汉, 周裕清, 李 军. 金激光等离子体X射线精细结构谱研究. 物理学报, 2000, 49(12): 2389-2393. doi: 10.7498/aps.49.2389
下载:
计量
- 文章访问数: 5260
- PDF下载量: 75
- 被引次数: 0
