Please wait a minute...
Chin. Phys. B, 2009, Vol. 18(12): 5283-5290    DOI: 10.1088/1674-1056/18/12/028

Interference effects on the photoionization cross sections between two neighbouring atoms: nitrogen as an example

Wu Jian-Hua(吴建华) and Yuan Jian-Min(袁建民)
Department of Physics, National University of Defense Technology, Changsha 410073, China
Abstract  Interference effects on the photoionization cross sections between two neighbouring atoms are considered based on the coherent scattering of the ionized electrons by the two nuclei when their separation is less than or comparable to the de Broglie wave length of the ionized electrons. As an example, the single atomic nitrogen ionization cross section and the total cross sections of two nitrogen atoms with coherently added photoionization amplitudes are calculated from the threshold to about 60 ? (1 ? = 0.1 nm) of the photon energy. The photoionization cross sections of atomic nitrogen are obtained by using the close-coupling R-matrix method. In the calculation 19 states are included. The ionization energy of the atomic nitrogen and the photoionization cross sections agree well with the experimental results. Based on the R-matrix results of atomic nitrogen, the interference effects between two neighbouring nitrogen atoms are obtained. It is shown that the interference effects are considerable when electrons are ionized just above the threshold, even for the separations between the two atoms are larger than two times of the bond length of N2 molecules. Therefore, in hot and dense samples, effects caused by the coherent interference between the neighbours are expected to be observable for the total photoionization cross sections.
Keywords:  interference effect      photoionization cross section      nitrogen atom  
Received:  02 June 2009      Revised:  25 July 2009      Accepted manuscript online: 
PACS:  32.80.Fb (Photoionization of atoms and ions)  
  31.15.-p (Calculations and mathematical techniques in atomic and molecular physics)  
  31.15.V- (Electron correlation calculations for atoms, ions and molecules)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No 10734140), the National Basic Research Program of China (Grant No 2007CB815105).

Cite this article: 

Wu Jian-Hua(吴建华) and Yuan Jian-Min(袁建民) Interference effects on the photoionization cross sections between two neighbouring atoms: nitrogen as an example 2009 Chin. Phys. B 18 5283

[1] Generation of elliptical isolated attosecond pulse from oriented H2+ in a linearly polarized laser field
Yun-He Xing(邢云鹤), Jun Zhang(张军), Xiao-Xin Huo(霍晓鑫), Qing-Yun Xu(徐清芸), and Xue-Shen Liu(刘学深). Chin. Phys. B, 2022, 31(4): 043203.
[2] Stable quantum interference enabled by coexisting detuned and resonant STIRAPs
Dan Liu(刘丹), Yichun Gao(高益淳), Jianqin Xu(许建琴), and Jing Qian(钱静). Chin. Phys. B, 2021, 30(5): 053701.
[3] Interference effect on the liquid-crystal-based Stokes polarimeter
Jun-Feng Hou(侯俊峰), Dong-Guang Wang(王东光), Yuan-Yong Deng(邓元勇), Zhi-Yong Zhang(张志勇), and Ying-Zi Sun(孙英姿). Chin. Phys. B, 2020, 29(12): 124211.
[4] Relativistic R-matrix calculations for L-shell photoionization cross sections of C Ⅱ
Lu-You Xie(颉录有), Qian-Qian Man(满倩倩), Jian-Guo Wang(王建国), Yi-Zhi Qu(屈一至), Chen-Zhong Dong(董晨钟). Chin. Phys. B, 2018, 27(8): 083201.
[5] Dirac R-matrix calculations of photoionization cross sections of Ni XII and atomic structure data of Ni XIII
R T Nazir, M A Bari, M Bilal, S Sardar, M H Nasim, M Salahuddin. Chin. Phys. B, 2017, 26(2): 023102.
[6] Tunable thermoelectric properties in bended graphene nanoribbons
Chang-Ning Pan(潘长宁), Jun He(何军), Mao-Fa Fang(方卯发). Chin. Phys. B, 2016, 25(7): 078102.
[7] Theoretical analysis on fully differential cross sections for C6+ impact ionization of helium
Fang Xiao-Ying (方小英), Zhang Rui-Fang (张瑞芳), Duan Hui-Xiao (段慧晓), Sun Shi-Yan (孙世艳), Jia Xiang-Fu (贾祥富). Chin. Phys. B, 2014, 23(6): 063404.
[8] Tunneling of Boseben–Einstein condensate and interference effect in a harmonic trap with a Gaussian energy barrier
Hua Wei (花巍), Li Bin (李彬), Liu Xue-Shen (刘学深). Chin. Phys. B, 2011, 20(6): 060308.
[9] Application of the second-order ground-state correlation and random-phase approximation on photoionization cross section of manganese
Lu Peng-Fei (芦鹏飞), Liu Jin-Chao (刘锦超), Yang Xiang-Dong (杨向东), Ma Xiao-Guang (马晓光). Chin. Phys. B, 2003, 12(2): 159-163.
[10] Electronic transport properties of metallic single-walled carbon nanotubes
Cao Jue-Xian (曹觉先), Yan Xiao-Hong (颜晓红), Xiao Yang (肖杨), Ding Jian-Wen (丁建文). Chin. Phys. B, 2003, 12(12): 1440-1444.
No Suggested Reading articles found!