Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field

doi:10.1088/1674-1056/19/11/113405

中国物理B ›› 2010, Vol. 19 ›› Issue (11): 113405-113601.doi: 10.1088/1674-1056/19/11/113405

Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field

娄俊¹, 李书民²

(1)Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; (2)Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; Institut für Theoretische Physik, Universit?t Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany

收稿日期:2010-03-17 修回日期:2010-07-20 出版日期:2010-11-15 发布日期:2010-11-15
基金资助:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10874169 and 10674125), the National Basic Research Program of China (Grant Nos. 2007CB925200 and 2010CB923301). Li S. M. would like to thank the Deutsche Forschungsgemeinschaft for the support (Contract No. 446CHV113/261/0-1) during his stay in Germany.

Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field

Lou Jun(娄俊)^a) and Li Shu-Min(李书民)^a)b)^†

^a Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; ^b Institut für Theoretische Physik, Universit?t Heidelberg, Philosophenweg 16, 69120 Heidelberg, Germany

Received:2010-03-17 Revised:2010-07-20 Online:2010-11-15 Published:2010-11-15
Supported by:
Project supported by the National Natural Science Foundation of China (Grant Nos. 10874169 and 10674125), the National Basic Research Program of China (Grant Nos. 2007CB925200 and 2010CB923301). Li S. M. would like to thank the Deutsche Forschungsgemeinschaft for the support (Contract No. 446CHV113/261/0-1) during his stay in Germany.

摘要/Abstract

摘要： The positron impact-ionisation of atomic hydrogen in the presence of a linearly polarised bichromatic field is investigated in the first Born approximation. The field is composed of a fundamental frequency and its second harmonic. The state of positron in the field is described by the Volkov wavefunction, and the continuum state of the ejected electron is described by the Coulomb-Volkov wavefunction. The dressed ground state of target is a first order time-dependent perturbative wavefunction. The triple differential cross sections and their dependencies on laser field parameters are discussed and compared with the results modified by a monochromatic field. Numerical results show that the coherent phase control is significant and the laser-assisted ionisation cross sections caused by positron and electron are different.

Abstract: The positron impact-ionisation of atomic hydrogen in the presence of a linearly polarised bichromatic field is investigated in the first Born approximation. The field is composed of a fundamental frequency and its second harmonic. The state of positron in the field is described by the Volkov wavefunction, and the continuum state of the ejected electron is described by the Coulomb-Volkov wavefunction. The dressed ground state of target is a first order time-dependent perturbative wavefunction. The triple differential cross sections and their dependencies on laser field parameters are discussed and compared with the results modified by a monochromatic field. Numerical results show that the coherent phase control is significant and the laser-assisted ionisation cross sections caused by positron and electron are different.

Key words: bichromatic laser field, positron, impact-ionisation

中图分类号: (Perturbation theory)

31.15.xp

32.80.Fb (Photoionization of atoms and ions) 32.80.Qk (Coherent control of atomic interactions with photons) 34.80.Uv (Positron scattering) 37.10.Vz (Mechanical effects of light on atoms, molecules, and ions)

娄俊, 李书民. Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field[J]. 中国物理B, 2010, 19(11): 113405-113601.

Lou Jun(娄俊) and Li Shu-Min(李书民). Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field[J]. Chin. Phys. B, 2010, 19(11): 113405-113601.

参考文献 31

[1]	Caradonna P, Sullivan J P, Jones A, Makochekanwa C, Slaughter D, Mueller D W and Buckman S J 2009 Phys. Rev. A 80 060701
[2]	Arcidiacono C, K"ov'er 'A and Laricchia G 2005 Phys. Rev. Lett. 95 223202
[3]	Shi D H, Sun J F, Zhu Z L and Liu Y F 2006 Acta Phys. Sin. 55 2228 (in Chinese)
[4]	de Lucio O G, Gavin J and DuBois R D 2006 Phys. Rev. Lett. 97 243201
[5]	Fiol J and Barrachina R O 2009 J. Phys. B 42 231004
[6]	Spicher G, Olsson B, Raith W, Sinapius G and Sperber W 1990 Phys. Rev. Lett. 64 1019
[7]	Kara V, Paludan K, Moxom J, Ashley P and Laricchia G 1997 J. Phys. B 30 3933
[8]	Nath B and Sinha C 2000 Phys. Rev. A 61 062705
[9]	Kuo T Y, Sun H L and Huang K N 2003 Phys. Rev. A 67 012705
[10]	Bartschat K 2005 Phys. Rev. A 71 032718
[11]	Benedek 'A and Campeanu R I 2007 J. Phys. B 40 1589
[12]	Miraglia J E 2009 Phys. Rev. A 79 022708
[13]	Jansen K, Ward S J, Shertzer J and Macek J H 2009 Phys. Rev. A 79 022704
[14]	Otranto S and Olson R E 2009 Phys. Rev. A 80 012714
[15]	Chattopadhyay A and Sinha C 2005 Phys. Rev. A 72 053406
[16]	Pan J, Li S M and Berakdar J 2007 Opt. Lett. 32 585
[17]	Szoke A, Kulander K C and Bardsley J N 1991 J. Phys. B 24 3165
[18]	Zhou B and Li S M 2010 Chin. Phys. B 19 033401
[19]	Potvliege R M and Smith P H G 1992 J. Phys. B 25 2501
[20]	Milosvevi'c D B and Ehlotzky F 1997 Phys. Rev. A 56 3879
[21]	Giusti-Suzor A, Mies F H, DiMauro L F, Charron E and Yang B 1995 J. Phys. B 28 309
[22]	Ehlotzky F 2001 Phys. Rep. 345 175
[23]	Ehrhardt H, Hesselbacher K H, Jung K, Schulz M and Willmann K 1972 J. Phys. B 5 2107
[24]	Ehrhardt H, Jung K, Knoth G and Schlemmer P 1986 Z. Phys. D 1 3
[25]	Zhou B and Li S M 2009 Chin. Phys. Lett. 26 043401
[26]	Duchateau G, Cormier E, Bachau H and Gayet R 2001 Phys. Rev. A 63 053411
[27]	Kornev A S and Zon B A 2002 J. Phys. B 35 2451
[28]	Li S M, Berakdar J, Zhang S T and Chen J 2005 J. Phys. B 38 1291
[29]	Abramowitz M and Stegun I 1972 A Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables (U.S. Department of Commerce).
[30]	Li S M, Chen Z J, Wang Q Q and Zhou Z F 1999 Eur. Phys. J. D 7 39
[31]	Varr'o S and Ehlotzky F 1993 Phys. Rev. A 47 715

Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field

Positron-impact ionisation of atomic hydrogen in the presence of a bichromatic laser field

PDF (PC)

赞

可视化

摘要/Abstract

引用本文

使用本文

参考文献 31

相关文章 15

Metrics

本文评价

推荐阅读 0

[1]	吴锋, 孟丽娟. Ground-state energy of beryllium atom with parameter perturbation method[J]. 中国物理B, 2018, 27(9): 93101-093101.
[2]	袁琳, 赵云辉, 徐军, 周本胡, 海文华. Variational-integral perturbation corrections of some lower excited states for hydrogen atoms in magnetic fields[J]. 中国物理B, 2012, 21(10): 103103-103103.
[3]	段美玲, 邝小渝, 张彩霞, 柴瑞鹏. Comparative analysis of energy-level splitting of Pr³⁺ doped in LiYF₄ and LiBiF₄ crystals: a complete energy matrix calculation[J]. 中国物理B, 2011, 20(1): 13102-013102.
[4]	童小菲, 杨传路, 肖静, 王美山, 马晓光. Theoretical study on the complexes of He, Ne and Ar[J]. 中国物理B, 2010, 19(12): 123102-123102.
[5]	宫明艳, 胡小龙, 陈侠, 牛梅, 凤尔银. Rovibrational quenching of BH in ultracold ³He collisions[J]. 中国物理B, 2010, 19(6): 63401-063401.
[6]	由帅, 凤艳艳, 戴振文. Energy level analyses of even-parity J = 1 and 2 Rydberg states of Sn I by multichannel quantum defect theory[J]. 中国物理B, 2009, 18(6): 2229-2237.
[7]	胡木宏, 王治文. Oscillator strengths for 2²S--n²P transitions of the lithium isoelectronic sequence from Z = 11 to 20[J]. 中国物理B, 2009, 18(6): 2244-2249.
[8]	闫冰, 潘守甫, 郭庆群. Spin--orbit ab initio curves of ⁸⁰Se₂⁺ ion and theassignment of photoelectron spectra of ⁸⁰Se₂ molecule[J]. 中国物理B, 2008, 17(9): 3318-3321.
[9]	张莉, 罗文浪, 阮文, 蒋刚, 朱正和. Ground state for CH₂ and symmetry for methane decomposition[J]. 中国物理B, 2008, 17(6): 2023-2026.
[10]	李桂霞, 高涛, 张云光. The splitting of low-lying or low excited states for hydride molecules (cations) of the third period under spin-orbit coupling[J]. 中国物理B, 2008, 17(6): 2040-2047.
[11]	赵云辉, 海文华, 赵乘麟, 罗小兵. Boundedness and convergence of perturbed corrections for helium-like ions in ground states[J]. 中国物理B, 2008, 17(5): 1720-1728.
[12]	吕兵, 令狐荣锋, 周勋, 杨向东, 朱正和, 程新路. Analytical potential energy function for the electronic states ²П_1/2 and ²П_3/2 of O₂^x(x=+1, --1)[J]. 中国物理B, 2008, 17(5): 1738-1742.
[13]	闫冰, 潘守甫. Multi-reference calculations of the photodissociation of HSCH₃ molecule[J]. 中国物理B, 2008, 17(4): 1501-1505.
[14]	吴晓丽, 俞开智, 苟秉聪, 张孟. Calculations on the hyperfine constants of the ground states for lithium-like system[J]. 中国物理B, 2007, 16(8): 2389-2393.
[15]	李桂霞, 高涛, 陈东, 李跃勋, 张云光, 朱正和. The splitting of low-lying states for hydroxyl molecule under spin--orbit coupling[J]. 中国物理B, 2006, 15(5): 998-1003.