ATOMIC AND MOLECULAR PHYSICS |
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Revisiting Laser-Intensity-Dependent Ionization and Fragmentation of C$_{60}$ |
D. P. Dong1,2, B. H. Yang1,2, D. B. Qian1,2*, W. C. Zhou1,2, S. F. Zhang1,2, and X. Ma1,2* |
1Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China 2University of Chinese Academy of Sciences, Beijing 100049, China
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Cite this article: |
D. P. Dong, B. H. Yang, D. B. Qian et al 2021 Chin. Phys. Lett. 38 083301 |
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Abstract We revisit the laser-intensity-dependent ionization and fragmentation yields of C$_{60}$ molecules irradiated by 25-fs, 798-nm laser pulses based on the approach in which photoions are measured via a velocity map imaging spectrometer working in a time-sliced mode. This approach dramatically improves the signal-to-background ratio compared to those using a simple (traditional) time-of-flight mode (spectrometer), and thus allows us to measure the laser-intensity dependences down to a previously untouched region, which is expected to provide new insights into the intense-field ionization and fragmentation of C$_{60}$. Indeed, we find that the saturation intensities for C$_{60}$ ionizations and the onset intensity for C$_{60}$ fragmentation are much lower than those reported in previous experiments. Furthermore, the derived saturation-intensity dependence on charge distribution demonstrates the validity of the over-the-barrier ionization using a conducting sphere model.
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Received: 01 April 2021
Published: 02 August 2021
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Fund: Supported by the National Key R&D Program (Grant No. 2017YFA0402300), and the National Natural Science Foundation of China (Grant Nos. 11974359 and U1632143). |
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[1] | Dewitt M J and Levis R J 1998 Phys. Rev. Lett. 81 5101 |
[2] | Hankin S M, Villeneuve D M, Corkum P B, and Rayner D M 2000 Phys. Rev. Lett. 84 5082 |
[3] | Lépine F 2015 J. Phys. B 48 122002 |
[4] | Hunsche S, Starczewski T, L'Huillier A, Persson A, Wahlström C G, van Linden van den Heuvell B, and Svanberg S 1996 Phys. Rev. Lett. 77 1966 |
[5] | Campbell E E B and Levine R D 2000 Annu. Rev. Phys. Chem. 51 65 |
[6] | Schulz C P, Hertel I V, and Laarmann T 2005 Adv. At. Mol. Opt. Phys. 50 219 |
[7] | Tchaplyguine M, Hoffmann K, Dühr O, Hohmann H, Korn G, Rottke H, Wittmann M, Hertel I V, and Campbell E E B 2000 J. Chem. Phys. 112 2781 |
[8] | Hertel I V, Shchatsinin I, Laarmann T, Zhavoronkov N, Ritze H H, and Schulz C P 2009 Phys. Rev. Lett. 102 023003 |
[9] | Campbell E E B, Hansen K, Hoffman K, Tchaplyguine M, Wittmann M, and Hertel I V 2001 J. Chem. Phys. 114 1716 |
[10] | Bhardwaj V R, Corkum P B, and Rayner D M 2004 Phys. Rev. Lett. 93 043001 |
[11] | Shchatsinin I, Laarmann T, Stibenz G, Steinmeyer G, Stalmashonak A, Zhavoronkov N, Schulz C P, and Hertel I V 2006 J. Chem. Phys. 125 194320 |
[12] | Qian D B, Zhang X J, Zhang D C, Zhang S F, Yang J, Cheng R, Zhu X L, and Ma X 2018 Chem. Phys. Lett. 691 110 |
[13] | Qian D B, Shi F D, Chen L, Martin S, Bernard J, Yang J, Zhang S F, Chen Z Q, Zhu X L, and Ma X 2018 J. Chem. Phys. 148 134303 |
[14] | Zhou W C, Zhao D M, Qian D B, Li Y F, Y, Shi F D, Zhu Y H, Zhang S F, Zhu X L, Wu Y, and Ma X 2019 Int. J. Mass Spectrom. 440 27 |
[15] | Eppink A T J B and Parker D H 1997 Rev. Sci. Instrum. 68 3477 |
[16] | Spence D E, Kean P N, and Sibbett W 1991 Opt. Lett. 16 42 |
[17] | Strickland D and Mourou G 1985 Opt. Commun. 56 219 |
[18] | Li Y F, Zhao D M, Zhou W C, Qian D B, yang J, Zhang S F, Zhu X L, and Ma X 2019 Int. J. Mass Spectrom. 442 23 |
[19] | Hankin S M, Villeneuve D M, Corkum P B, and Rayner D M 2001 Phys. Rev. A 64 13405 |
[20] | Bhardwaj V R, Corkum P B, and Rayner D M 2003 Phys. Rev. Lett. 91 203004 |
[21] | Jaroń-Becker A, Becker A, and Faisal F H M 2006 Phys. Rev. Lett. 96 143006 |
[22] | Lezius M, Blanchet V, Rayner D M, Villeneuve D M, Stolow A, and Ivanov M Y 2001 Phys. Rev. Lett. 86 51 |
[23] | Hansen K, Hoffmann K, and Campbell E E B 2003 J. Chem. Phys. 119 2513 |
[24] | Hansch P and Van Woerkom L D 1996 Opt. Lett. 21 1286 |
[25] | Walker M A, Hansch P, and Van Woerkom L D 1998 Phys. Rev. A 57 R701 |
[26] | Bauer D, Ceccherini F, Macchi A, and Cornolti F 2001 Phys. Rev. A 64 063203 |
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