Please wait a minute...
Chin. Phys. B, 2010, Vol. 19(11): 113405    DOI: 10.1088/1674-1056/19/11/113405
ATOMIC AND MOLECULAR PHYSICS Prev   Next  

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
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.
Keywords:  bichromatic laser field      positron      impact-ionisation  
Received:  17 March 2010      Revised:  20 July 2010      Accepted manuscript online: 
PACS:  31.15.xp (Perturbation theory)  
  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)  
Fund: 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.

Cite this article: 

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 2010 Chin. Phys. B 19 113405

[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
[1] Enhancement of electron-positron pairs in combined potential wells with linear chirp frequency
Li Wang(王莉), Lie-Juan Li(李烈娟), Melike Mohamedsedik(麦丽开·麦提斯迪克), Rong An(安荣), Jing-Jing Li(李静静), Bo-Song Xie(谢柏松), and Feng-Shou Zhang(张丰收). Chin. Phys. B, 2023, 32(1): 010301.
[2] Design and high-power test of 800-kW UHF klystron for CEPC
Ou-Zheng Xiao(肖欧正), Shigeki Fukuda, Zu-Sheng Zhou(周祖圣), Un-Nisa Zaib, Sheng-Chang Wang(王盛昌), Zhi-Jun Lu(陆志军), Guo-Xi Pei(裴国玺), Munawar Iqbal, and Dong Dong(董东). Chin. Phys. B, 2022, 31(8): 088401.
[3] Characterization, spectroscopic investigation of defects by positron annihilation, and possible application of synthesized PbO nanoparticles
Sk Irsad Ali, Anjan Das, Apoorva Agrawal, Shubharaj Mukherjee, Maudud Ahmed, P M G Nambissan, Samiran Mandal, and Atis Chandra Mandal. Chin. Phys. B, 2021, 30(2): 026103.
[4] Dynamical effects of switching a super-critical well potential on pair creation from a vacuum
Qiang Wang(王强), Qin-Zhi Xia(夏勤智), Jie Liu(刘杰), Li-Bin Fu(傅立斌). Chin. Phys. B, 2018, 27(8): 080302.
[5] Magnetic field aligned orderly arrangement of Fe3O4 nanoparticles in CS/PVA/Fe3O4 membranes
Meng Du(杜萌), Xing-Zhong Cao(曹兴忠), Rui Xia(夏锐), Zhong-Po Zhou(周忠坡), Shuo-Xue Jin(靳硕学), Bao-Yi Wang(王宝义). Chin. Phys. B, 2018, 27(2): 027805.
[6] Resonances for positron-helium and positron-lithium systems in kappa-distribution plasma
Zi-Shi Jiang(姜子实), Ya-Chen Gao(高亚臣), Sabyasachi Kar, Kurunathan Ratnavelu. Chin. Phys. B, 2018, 27(12): 123402.
[7] Nonlinear ion-acoustic solitary waves in an electron-positron-ion plasma with relativistic positron beam
Ridip Sarma, Amar P Misra, Nirab C Adhikary. Chin. Phys. B, 2018, 27(10): 105207.
[8] Plasma-screening effects on positronium formation
Jia Ma(马佳), Yuan-Cheng Wang(王远成), Ya-Jun Zhou(周雅君), Heng Wang(王珩). Chin. Phys. B, 2018, 27(1): 013401.
[9] Analytical solutions for a doubly driven two-level atom
Jin-Yun Liu(刘晋允), Feng-Dong Jia(贾凤东), Xiao-Kang Li(李晓康), Shuang-Fei Lv(吕双飞), Xiang-Yuan Xu(许祥源), Ping Xue(薛平), Zhi-Ping Zhong(钟志萍). Chin. Phys. B, 2017, 26(7): 074203.
[10] Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films
Peng Kuang(况鹏), Xiao-Long Han(韩小龙), Xing-Zhong Cao(曹兴忠), Rui Xia(夏锐), Peng Zhang(张鹏), Bao-Yi Wang(王宝义). Chin. Phys. B, 2017, 26(5): 057802.
[11] Positronium formation for positron scattering from metastable hydrogen
Lin Lin(林蔺), Hong-Nian Wang(汪宏年), Li-Guang Jiao(焦利光). Chin. Phys. B, 2017, 26(3): 033401.
[12] Optical potential approach for positron scattering by metastable 23S state of helium
Xi-Gang Wu(吴锡刚), Yong-Jun Cheng(程勇军), Fang Liu(刘芳), Ya-Jun Zhou(周雅君). Chin. Phys. B, 2017, 26(2): 023401.
[13] Enhanced electron-positron pair production by frequency chirping in one- and two-color laser pulse fields
Nuriman Abdukerim, Zi-Liang Li(李子良), Bai-Song Xie(谢柏松). Chin. Phys. B, 2017, 26(2): 020301.
[14] Differential cross sections of positron—hydrogen collisions
Rong-Mei Yu(于荣梅), Chun-Ying Pu(濮春英), Xiao-Yu Huang(黄晓玉), Fu-Rong Yin(殷复荣), Xu-Yan Liu(刘旭焱), Li-Guang Jiao(焦利光), Ya-Jun Zhou(周雅君). Chin. Phys. B, 2016, 25(7): 073401.
[15] Effect of Bohm quantum potential in the propagation of ion-acoustic waves in degenerate plasmas
M M Hasan, M A Hossen, A Rafat, A A Mamun. Chin. Phys. B, 2016, 25(10): 105203.
No Suggested Reading articles found!