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We have measured secondary electron emission yields in forward and backward directions from the carbon foils with different thicknesses, which are penetrated by Ne2+ ion of an energy from 2 to 25 keV/u. In the experiment, the contributions of projectile potential energy deposition, electronic energy loss and recoil atom to the forward and backward electron emission yields have been studied systematically by changing the projectile ions energy. Results show that the ions potential energy deposition only have the impact on the backward electron emission yield, while the forward and backward electron emission yields increase approximately linearly with the increase of the electron energy loss at the exit and entrance surfaces of the thin film respectively. When the electron energy loss is low, the impact of recoil atoms on the electron emission cannot be neglected.
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Keywords:
- near Bohr velocity /
- electron emission /
- electronic energy loss /
- recoil atom
[1] Zhao Y T, Xiao G Q, Xu Z F, Abdul Q, Wang Y Y, Zhang X A, Li F L, Zhan W L 2007 Acta Phys. Sin. 56 5734 (in Chinese) [赵永涛, 肖国青, 徐忠锋, Abdul Qayyum, 王瑜玉, 张小安, 李福利, 詹文龙 2007 物理学报 56 5734]
[2] Wang Y Y, Zhao Y T, Abdul Q, Xiao G Q 2007 Nucl. Instr. and Meth. B 265 474
[3] Wang X, Zhao Y T, Cheng R, Zhou X M, Xu G, Sun Y B, Lei Y, Wang Y Y, Ren J R, Yu Y, Li Y F, Zhang X A, Li Z Y, Liang C H, Xiao G Q 2012 Acta Phys. Sin. 61 193201 (in Chinese) [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 2012 物理学报 61 193201]
[4] Zhang X A, Yang Z H, Wang D C, Mei C X, Niu C Y, Wang W, Dai B, Xiao G Q 2009 Acta Phys. Sin. 58 6920 (in Chinese) [张小安, 杨治虎, 王党朝, 梅策香, 牛超英, 王伟, 戴斌, 肖国青 2009 物理学报 58 6920]
[5] Xu J Z, Du J, Chen X M, Shao J X, Yang Z H, Cui Y, Gao Z M, Liu Y W 2008 Chin. Phys. Lett. 25 1649
[6] Li D H, Zhao Y T, Wang Y Y, Zhao D, Xiao G Q, Abdul Q 2008 J. Atom. Mole. Phys. 25 777 (in Chinese) [李德慧, 赵永涛, 王瑜玉, 赵迪, 肖国青, Abdul Qayyum 2008 原子与分子物理学报 25 777]
[7] Ritzau S M, Baragiola R A 1998 Phys. Rev. B 58 2529
[8] Clouvas A, Potiriadis C, Rothard H, Hofmann D, Wnsch R, Groeneveld K O, Katsanos A, Xenoulis A C 1997 Phys. Rev. B 55 12086
[9] Jung M, Rothard H, Gervais B, Grandin J P, Clouvas A, Wnsch R 1996 Phys. Rev. A 54 4153
[10] Wang Y Y, Zhao Y T, Sun J R, Li D H, Li D H, Qayyum A, Li J Y, Wang P Z, Xiao G Q 2011 Chin. Phys. Lett. 28 053402
[11] Rothard H, Caraby C, Cassimi A, Gervais B, Grandin J P, Jardin P, Jung M, Billebaud A, Chevallier M, Groeneveld K O, Maier R 1995 Phys. Rev. A 51 3066
[12] Sternglass E J 1957 Phys. Rev. 108 1
[13] Zhao Y T, Xiao G Q, Zhang X A, Yang Z H, Chen X M, Zhang Y P 2006 J. Atom. Mole. Phys. 23 23 (in Chinese) [赵永涛, 肖国青, 张小安, 杨治虎, 陈熙萌, 张艳萍 2006 原子与分子物理学报 23 23]
[14] Xiao G Q, Zhao Y T, Zhang X A, Wang Y Y, Fang Y, Ma X W, Yang Z H, Li F L, Chen X M, Wang T S, Zhan W L 2006 J. Atom. Mole. Phys. (supplement) 176 (in Chinese) [肖国青, 赵永涛, 张小安, 王瑜玉, 房燕, 马新文, 杨治虎, 李福利, 陈熙萌, 王铁山, 詹文龙 2006 原子与分子物理学报 (增刊) 176]
[15] Schou J 1980 Phys. Rev. B 22 2141
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[1] Zhao Y T, Xiao G Q, Xu Z F, Abdul Q, Wang Y Y, Zhang X A, Li F L, Zhan W L 2007 Acta Phys. Sin. 56 5734 (in Chinese) [赵永涛, 肖国青, 徐忠锋, Abdul Qayyum, 王瑜玉, 张小安, 李福利, 詹文龙 2007 物理学报 56 5734]
[2] Wang Y Y, Zhao Y T, Abdul Q, Xiao G Q 2007 Nucl. Instr. and Meth. B 265 474
[3] Wang X, Zhao Y T, Cheng R, Zhou X M, Xu G, Sun Y B, Lei Y, Wang Y Y, Ren J R, Yu Y, Li Y F, Zhang X A, Li Z Y, Liang C H, Xiao G Q 2012 Acta Phys. Sin. 61 193201 (in Chinese) [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 2012 物理学报 61 193201]
[4] Zhang X A, Yang Z H, Wang D C, Mei C X, Niu C Y, Wang W, Dai B, Xiao G Q 2009 Acta Phys. Sin. 58 6920 (in Chinese) [张小安, 杨治虎, 王党朝, 梅策香, 牛超英, 王伟, 戴斌, 肖国青 2009 物理学报 58 6920]
[5] Xu J Z, Du J, Chen X M, Shao J X, Yang Z H, Cui Y, Gao Z M, Liu Y W 2008 Chin. Phys. Lett. 25 1649
[6] Li D H, Zhao Y T, Wang Y Y, Zhao D, Xiao G Q, Abdul Q 2008 J. Atom. Mole. Phys. 25 777 (in Chinese) [李德慧, 赵永涛, 王瑜玉, 赵迪, 肖国青, Abdul Qayyum 2008 原子与分子物理学报 25 777]
[7] Ritzau S M, Baragiola R A 1998 Phys. Rev. B 58 2529
[8] Clouvas A, Potiriadis C, Rothard H, Hofmann D, Wnsch R, Groeneveld K O, Katsanos A, Xenoulis A C 1997 Phys. Rev. B 55 12086
[9] Jung M, Rothard H, Gervais B, Grandin J P, Clouvas A, Wnsch R 1996 Phys. Rev. A 54 4153
[10] Wang Y Y, Zhao Y T, Sun J R, Li D H, Li D H, Qayyum A, Li J Y, Wang P Z, Xiao G Q 2011 Chin. Phys. Lett. 28 053402
[11] Rothard H, Caraby C, Cassimi A, Gervais B, Grandin J P, Jardin P, Jung M, Billebaud A, Chevallier M, Groeneveld K O, Maier R 1995 Phys. Rev. A 51 3066
[12] Sternglass E J 1957 Phys. Rev. 108 1
[13] Zhao Y T, Xiao G Q, Zhang X A, Yang Z H, Chen X M, Zhang Y P 2006 J. Atom. Mole. Phys. 23 23 (in Chinese) [赵永涛, 肖国青, 张小安, 杨治虎, 陈熙萌, 张艳萍 2006 原子与分子物理学报 23 23]
[14] Xiao G Q, Zhao Y T, Zhang X A, Wang Y Y, Fang Y, Ma X W, Yang Z H, Li F L, Chen X M, Wang T S, Zhan W L 2006 J. Atom. Mole. Phys. (supplement) 176 (in Chinese) [肖国青, 赵永涛, 张小安, 王瑜玉, 房燕, 马新文, 杨治虎, 李福利, 陈熙萌, 王铁山, 詹文龙 2006 原子与分子物理学报 (增刊) 176]
[15] Schou J 1980 Phys. Rev. B 22 2141
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