PHYSICAL MECHANISMS CONTROLLING THE MULTIPLE RECOLLISIONS IN THE NONSEQUENTIAL DOUBLE IONIZATION PROCESS
Main Article Content
Abstract
In this paper, the three dimensional classical ensemble model is used to investigate the contribution of the ionization mechanisms that control the multiple recollisions in the nonsequential double ionization process of Ar atom. In this study, the length of laser pulse has been varied as N = 4, 6, 8 T0 where T0 is the optical cycle of the pulse while keeping its wavelength and intensity fixed. The results indicate that in the case of the near single cycle laser pulse, the multiple recollisions are almost eliminated. In addition, we observe that as the length of the laser pulse increases, the recollision induced excitation with subsequent ionization and direct ionization mechanisms grow corresponding to the cases of the nonsequential double ionization signals which consist of the single and double recollisions, respectively. Our investigation is vital for the viewpoint of experiment for the sake of eliminating the distortion from multiple recollision signals.
Keywords
nonsequential double ionization process, multiple recollisions, 3D classical ensemble model, ionization mechanism
Article Details
References
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Le, V. H., Le, A. T., Xie, R. H., & Lin, C. D. (2007). Theoretical analysis of dynamic chemical imaging with lasers using high-order harmonic generation. Physical Review A, 76(1), 013414.
Liu, Y., Tschuch, S., Rudenko, A., Dürr, M., Siegel, M., Morgner, U.,... & Ullrich, J. (2008). Strong-field double ionization of Ar below the recollision threshold. Physical review letters, 101(5), 053001.
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Chen, Y., Zhou, Y., Li, Y., Li, M., Lan, P., & Lu, P. (2016). The contribution of the delayed ionization in strong-field nonsequential double ionization. The Journal of chemical physics, 144(2), 024304.
Tran N. L. H., Truong, T. D. H., Pham, V. N. T. (2017). Investigating the multiple recollision of the nonsequential double ionization process. Journal of Science of Hue University, 1B, pp. 126.
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Ma, X., Zhou, Y., Li, N., Li, M., & Lu, P. (2018). Attosecond control of correlated electron dynamics in strong-field nonsequential double ionization by parallel two-color pulses. Optics & Laser Technology, 108, 235-240.
Haan, S. L., Smith, Z. S., Shomsky, K. N., & Plantinga, P. W. (2008b). Anticorrelated electrons from weak recollisions in nonsequential double ionization. Journal of Physics B: Atomic, Molecular and Optical Physics, 41(21), 211002.
Zhou, Y., Liao, Q., & Lu, P. (2010). Asymmetric electron energy sharing in strong-field double ionization of helium. Physical Review A, 82(5), 053402.
Zhou, Y., Liao, Q., & Lu, P. (2009). Mechanism for high-energy electrons in nonsequential double ionization below the recollision-excitation threshold. Physical Review A, 80(2), 023412.
Truong, T. D. H., Tran, H. V. N, & Pham, V. N. T. (2019, July). The role of electron-electron repulsion to the nonsequential double ionization mechanisms. In Journal of Physics: Conference Series, 1274(1), p. 012007, IOP Publishing.
Panfili, R., Eberly, J. H., & Haan, S. L. (2001). Comparing classical and quantum dynamics of strong-field double ionization. Optics Express, 8(7), 431-435.
Ma, X., Zhou, Y., & Lu, P. (2016). Multiple recollisions in strong-field nonsequential double ionization. Physical Review A, 93(1), 013425.
Corkum, P. B. (1993). Plasma perspective on strong field multiphoton ionization. Physical review letters, 71(13), 1994.
Eckhardt, B. J., Prazner-Bechcickib, S., Sachac, K. & Zakrzewski, J. (2010). Phase effects in double ionization by strong short pulses. Chem. Phys., 370, 168.
Bergues, B., Kübel, M., Johnson, N. G., Fischer, B., Camus, N., Betsch, K. J.,... & Pfeifer, T. (2012). Attosecond tracing of correlated electron-emission in non-sequential double ionization. Nature communications, 3(1), 1-6.
Gontier, Y., Poirier, M., & Trahin, M. (1980). Multiphoton absorptions above the ionisation threshold. Journal of Physics B: Atomic and Molecular Physics, 13(7), 1381.
Itatani, J., Levesque, J., Zeidler, D., Niikura, H., Pépin, H., Kieffer, J. C.,... & Villeneuve, D. M. (2004). Tomographic imaging of molecular orbitals. Nature, 432(7019), 867-871.
Le, V. H., Le, A. T., Xie, R. H., & Lin, C. D. (2007). Theoretical analysis of dynamic chemical imaging with lasers using high-order harmonic generation. Physical Review A, 76(1), 013414.
Liu, Y., Tschuch, S., Rudenko, A., Dürr, M., Siegel, M., Morgner, U.,... & Ullrich, J. (2008). Strong-field double ionization of Ar below the recollision threshold. Physical review letters, 101(5), 053001.
Wu, C. Y., Yang, Y. D., Liu, Y. Q., Gong, Q. H., Wu, M., Liu, X., ... & Chen, J. (2012). Characteristic spectrum of very low-energy photoelectron from above-threshold ionization in the tunneling regime. Physical review letters, 109(4), 043001.
Wolter, B., Pullen, M. G., Baudisch, M., Sclafani, M., Hemmer, M., Senftleben, A., ... & Biegert, J. (2015). Strong-field physics with mid-IR fields. Physical Review X, 5(2), 021034.
Chen, Y., Zhou, Y., Li, Y., Li, M., Lan, P., & Lu, P. (2016). The contribution of the delayed ionization in strong-field nonsequential double ionization. The Journal of chemical physics, 144(2), 024304.
Tran N. L. H., Truong, T. D. H., Pham, V. N. T. (2017). Investigating the multiple recollision of the nonsequential double ionization process. Journal of Science of Hue University, 1B, pp. 126.
van Linden van den Heuvell, H. B., & Muller, H. G. Of referencing in Multiphoton Processes (ed. Smith, S. J. & Knight, P. L.) 25-34 (Cambridge University Press, 1988).
Huynh, S. V., Truong, T. D. H., Tran, Y. H. H., Vo, L. T., & Pham, V. N. T. (2016). Dependence of two-electron correlated dynamics on the relative phase of two-color orthogonal laser pulse. Journal of Science, 3(81), 34.
Ma, X., Zhou, Y., Li, N., Li, M., & Lu, P. (2018). Attosecond control of correlated electron dynamics in strong-field nonsequential double ionization by parallel two-color pulses. Optics & Laser Technology, 108, 235-240.