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50-keV/u Ne8+离子碰撞导致的$\bf{{\text{C}}_3}{\text{H}}_4^{2 + }$三体解离机制

李桃桃 苑航 王兴 张震 郭大龙 朱小龙 闫顺成 赵冬梅 张少锋 许慎跃 马新文

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50-keV/u Ne8+离子碰撞导致的$\bf{{\text{C}}_3}{\text{H}}_4^{2 + }$三体解离机制

李桃桃, 苑航, 王兴, 张震, 郭大龙, 朱小龙, 闫顺成, 赵冬梅, 张少锋, 许慎跃, 马新文

Three-body fragmentation dynamics of C3H4 induced by 50-keV/u Ne8+ ion impact

Li Tao-Tao, Yuan Hang, Wang Xing, Zhang Zhen, Guo Da-Long, Zhu Xiao-Long, Yan Shun-Cheng, Zhao Dong-Mei, Zhang Shao-Feng, Xu Shen-Yue, Ma Xin-Wen
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  • 利用反应显微成像谱仪开展了50-keV/u Ne8+ 离子与C3H4分子碰撞实验, 研究了丙二烯(CH2CCH2)和丙炔(CH3CCH)两种同分异构分子形成${{\text{C}}_3}{\text{H}}_4^{2 + }$二价离子并解离产生H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H的过程. 实验获得了H+${{\text{C}}_3}{\text{H}}_2^ + $的动量, 进而通过动量守恒得到第3个碎片的动量. 通过分析3个碎片的动能及解离的动能释放鉴别出未被探测的碎片为中性H原子的事件. 借助Dalitz图、Newton图以及碎片产物的角分布等分析了该通道的动力学机制. 结果表明, 次序解离是该解离通道的主要机制, 在碎裂过程中二价母体离子先解离成H+${{\text{C}}_3}{\text{H}}_3^ + $, 中间体的${{\text{C}}_3}{\text{H}}_3^ + $离子再进一步解离成${{\text{C}}_3}{\text{H}}_2^ + $和H原子.
    The experiment on collision between 50-keV/u Ne8+ ion and C3H4 molecule is carried out by reaction microscopic imaging spectrometer. The process of forming the $\rm C_3H_4^{2+}$ divalent ion from propylene (CH2CCH2) and proacetylene (CH3CCH) and then dissociating to produce H+ and C3H2+ $\rm C_3H_2^+$ ions and H atom is studied. Using the reaction microscope, the momentum vector of H+ ion and the momentum vector of $\rm C_3H_2^+$ ion are directly obtained, and then the momentum of the undetected fragment is reconstructed according to momentum conservation. By analyzing the kinetic energy of the three fragments and the total kinetic energy released from the dissociation process, the events with H atom as the third fragment are discriminated from H+, and thus the H+ ion, $ \rm C_3H_2^+ $ ion, and H atom are identified. In addition, it is found that the sequential fragmentation pathway in which H+ ion and $\rm C_3H_3^+$ ion are produced in the first step followed by dissociation of $ \rm C_3H_3^+ $ into $ \rm C_3H_2^+ $ ion and H atom in the second step is the dominant dissociation mechanism according to the detailed analyses of the Dalitz plot, Newton diagram and α distribution.
      通信作者: 许慎跃, s.xu@impcas.ac.cn
    • 基金项目: 国家重点研发计划(批准号: 2017YFA0402300)和国家自然科学基金(批准号: 11674332)资助的课题.
      Corresponding author: Xu Shen-Yue, s.xu@impcas.ac.cn
    • Funds: Project supported by the National Key R&D Program of China (Grant No. 2017YFA0402300) and the National Nature Science Foundation of China (Grant No. 11674332).
    [1]

    Janev R K 1995 Atomic and Molecular Processes in Fusion Edge Plasmas (Boston: Springer) p3

    [2]

    Sada P V, Bjoraker G L, Jennings D E, McCabe G H, Romani P N 1998 Icarus 136 192Google Scholar

    [3]

    Xu S Y, Zhu X L, Feng W T, Guo D L, Zhao Q S, Yan S C, Zhang P J, Zhao D M, Gao Y, Zhang S F, Yang J, Ma X 2018 Phys. Rev. A 97 062701Google Scholar

    [4]

    Neumann N, Hant D, Schmidt L Ph H, Titze J, Jahnke T, Czasch A, Schöffler M S, Kreidi K, Jagutzki O, Schmidt-Böcking H, Döner R 2010 Phys. Rev. Lett. 104 103201Google Scholar

    [5]

    Hsieh S, Eland J H D 1997 J. Phys. B: At. Mol. Opt. Phys. 30 4515Google Scholar

    [6]

    Wu C, Wu C Y, Song D, Su H M, Yang Y D, Wu Z F, Liu X R, Liu H, Li M, Deng Y K, Liu Y Q, Peng L Y, Jiang H B, Gong Q H 2013 Phys. Rev. Lett. 110 103601Google Scholar

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    Yan S C, Zhu X L, Zhang P J, Ma X, Feng W T, Gao Y, Xu S Y, Zhao Q S, Zhang S F, Guo D L, Zhao D M, Zhang R T, Huang Z K, Wang H B, Zhang X J 2016 Phys. Rev. A 94 032708Google Scholar

    [8]

    Yang H, Wang E L, Dong W X, Gong M M, Shen Z J, Tang Y G, Shan X, Chen X J 2018 Phys. Rev. A 97 052703Google Scholar

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    Wu J, Kunitski M, Schmidt L Ph H, Jahnke T, Dörner R 2012 J. Chem. Phys. 137 104308Google Scholar

    [10]

    Gong X C, Kunitski M, Ph H Schmidt L, Jahnke T, Czasch A, Dörner R, Wu J 2013 Phys. Rev. A 88 013422Google Scholar

    [11]

    Ding X Y, Haertelt M, Schlauderer S, Schuurman M, Naumov A, Villeneuve D, McKellar A, Corkum P, Staudte A 2013 Phys. Rev. Lett. 118 153001Google Scholar

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    Tielens A 2013 Rev. Mod. Phys. 85 1021Google Scholar

    [13]

    Zhang Y, Jiang T, Wei L, Luo D, Wang X, Yu W, Hutton R, Zou Y, Wei B 2018 Phys. Rev. A 97 022703Google Scholar

    [14]

    Wang E L, Shan X, Shen Z J, Gong M M, Tang Y G, Pan Y, Lau K C, Chen X J 2015 Phys. Rev. A 91 052711Google Scholar

    [15]

    Wang X C, Zhang Y, Lu D, Lu G C, Wei B R, Zhang B H, Tang Y J, Hutton R, Zou Y M 2014 Phys. Rev. A 90 062705Google Scholar

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    Kusakabe T, Satoh S, Tawara H, Kimura M 2001 Phys. Rev. Lett. 87 328Google Scholar

    [17]

    Scully S, Senthil V, Wyer J, Shah M, Montenegro E, Kimura M, Tawara H 2005 Phys. Rev. A 72 030701Google Scholar

    [18]

    Mebel A M, Bandrauk A D 2008 J. Chem. Phys. 129 224311Google Scholar

    [19]

    Psciuk B T, Tao P, Schlegel H B 2010 J. Phys. Chem. A 114 7653Google Scholar

    [20]

    Xu H L, Okino T, Yamanouchi K 2009 J. Chem. Phys. Chem. Phys. Lett. 469 255Google Scholar

    [21]

    Xu H L, Okino T, Yamanouchi K 2009 J. Chem. Phys. 131 1659 151102Google Scholar

    [22]

    Xu H L, Okino T, Yamanouchi K 2011 Appl. Phys. A 104 941Google Scholar

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    Okino T, Watanabe A, Xu H L, Yamanouchi K 2012 Phys. Chem. Chem. Phys. 14 4230Google Scholar

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    Okino T, Watanabe A, Xu H L, Yamanouchi K 2012 Phys. Chem. Chem. Phys. 14 10640Google Scholar

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    Ma C, Xu S Y, Zhao D M, Guo D L, Yan S C, Feng W T, Zhu X L, Ma X W 2020 Phys. Rev. A 101 052701Google Scholar

    [26]

    Ma X W, Zhang R T, Zhang S F, Zhu X L, Feng W T, Guo D L, Li B, Liu H P, Li C Y, Wang J G, Yan S C, Zhang P J, Wang Q 2011 Phys. Rev. A 83 052707Google Scholar

    [27]

    Yuan H, Xu S Y, Li T T, Liu Y, Qian D B, Guo D L, Zhu X L, Ma X W 2020 Phys. Rev. A 102 062808Google Scholar

    [28]

    Li Y T, Xu S Y, Guo D L, Jia S K, Jiang X J, Zhu X L, Ma X W 2019 J. Chem. Phys. 150 144311Google Scholar

  • 图 1  (a) CH2CCH2和(b) CH3CCH 二维飞行时间谱[8], 其中红色椭圆对应H+ + ${{\text{C}}_3}{\text{H}}_2^ + $的事件; (c) CH2CCH2和 (d) CH3CCH分子的KER-H+能量的二维符合谱; (e) CH2CCH2和 (f) CH3CCH三体碎裂${{\text{C}}_3}{\text{H}}_4^{2 + }$ → H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H通道的KER分布; (g) CH2CCH2和(h) CH3CCH对应的H+和未探测粒子动能(H+/H0)的二维符合谱

    Fig. 1.  Two-dimensional time-of-flight (TOF) spectra, in which the events of red oval corresponds to the H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ for (a) CH2CCH2 and (b) CH3CCH; two-dimensional coincidence correlation spectra of KER-H+ energy of (c) CH2CCH2 and (d) CH3CCH; the KER distribution of (e) CH2CCH2 and (f) CH3CCH for three-body fragmentation of ${{\text{C}}_3}{\text{H}}_4^{2 + }$ → H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H channel; two-dimensional coincidence spectra of kinetic energies between H+ and undetected particle (H+/H0) of (g) CH2CCH2 and (h) CH3CCH.

    图 2  (a) CH2CCH2 和 (b) CH3CCH三体解离${{\text{C}}_3}{\text{H}}_4^{2 + }$→H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H过程的Dalitz 图

    Fig. 2.  Dalitz plot for three-body dissociation channel ${{\text{C}}_3}{\text{H}}_4^{2 + }$→H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H of (a) CH2CCH2 and (b) CH3CCH.

    图 3  CH2CCH2 (a)—(f) 和 CH3CCH (g)—(l)三体解离${{\text{C}}_3}{\text{H}}_4^{2 + }$ → H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H过程的Newton图 (a)和(g) 包含所有事件, 其他为以第3个粒子H的能量为选择条件的Newton图, 相应能量分别为0—0.5 eV (b), (h); 0.5—1.0 eV (c), (i); 1.0—2.0 eV (d), (j); 2.0—4.0 eV (e), (k); 4.0—6.0 eV (f), (l)

    Fig. 3.  Newton diagrams of CH2CCH2 (a)−(f) and CH3CCH (g)−(l) for three-body fragmentation channel ${{\text{C}}_3}{\text{H}}_4^{2 + }$→H+ + ${{\text{C}}_3}{\text{H}}_2^ + $ + H. (a) and (g) are Newton diagrams for all the events. The others are for different energy ranges of the neutral H: 0−0.5 eV for (b), (h), 0.5−1.0 eV for (c), (i); 1.0−2.0 eV for (d), (j); 2.0−4.0 eV for (e), (k); 4.0−6.0 eV for (f), (l).

    图 4  (a) CH2CCH2 和 (b) CH3CCH 分子次序解离路径${{\text{C}}_3}{\text{H}}_4^{2 + }$→H++${{\text{C}}_3}{\text{H}}_3^ + $→H++${{\text{C}}_3}{\text{H}}_2^ + $+H中两步解离过程之间夹角α分布; (c), (d) 不同H 碎片能量条件(0—0.5 eV, 0.5—1.0 eV, 1.0—2.0 eV, 2.0—4.0 eV, 4.0—6.0 eV) 下α分布. 图中蓝色曲线为标准的正弦分布曲线, 所有曲线都在最大值处作归一化处理

    Fig. 4.  Intensity distribution of the angle α between the first dissociation and second step for sequential dissociation ${{\text{C}}_3}{\text{H}}_4^{2 + }$→H++${{\text{C}}_3}{\text{H}}_3^ + $→H++${{\text{C}}_3}{\text{H}}_2^ + $+H of (a) CH2CCH2 and (b) CH3CCH; (c), (d) the intensity distributions of the angle α for different energy region of H (0−0.5 eV, 0.5−1.0 eV, 1.0−2.0 eV, 2.0−4.0 eV, 4.0−6.0 eV). The blue lines are the standard sinusoidal distribution curves. All curves are normalized at the maximum value.

  • [1]

    Janev R K 1995 Atomic and Molecular Processes in Fusion Edge Plasmas (Boston: Springer) p3

    [2]

    Sada P V, Bjoraker G L, Jennings D E, McCabe G H, Romani P N 1998 Icarus 136 192Google Scholar

    [3]

    Xu S Y, Zhu X L, Feng W T, Guo D L, Zhao Q S, Yan S C, Zhang P J, Zhao D M, Gao Y, Zhang S F, Yang J, Ma X 2018 Phys. Rev. A 97 062701Google Scholar

    [4]

    Neumann N, Hant D, Schmidt L Ph H, Titze J, Jahnke T, Czasch A, Schöffler M S, Kreidi K, Jagutzki O, Schmidt-Böcking H, Döner R 2010 Phys. Rev. Lett. 104 103201Google Scholar

    [5]

    Hsieh S, Eland J H D 1997 J. Phys. B: At. Mol. Opt. Phys. 30 4515Google Scholar

    [6]

    Wu C, Wu C Y, Song D, Su H M, Yang Y D, Wu Z F, Liu X R, Liu H, Li M, Deng Y K, Liu Y Q, Peng L Y, Jiang H B, Gong Q H 2013 Phys. Rev. Lett. 110 103601Google Scholar

    [7]

    Yan S C, Zhu X L, Zhang P J, Ma X, Feng W T, Gao Y, Xu S Y, Zhao Q S, Zhang S F, Guo D L, Zhao D M, Zhang R T, Huang Z K, Wang H B, Zhang X J 2016 Phys. Rev. A 94 032708Google Scholar

    [8]

    Yang H, Wang E L, Dong W X, Gong M M, Shen Z J, Tang Y G, Shan X, Chen X J 2018 Phys. Rev. A 97 052703Google Scholar

    [9]

    Wu J, Kunitski M, Schmidt L Ph H, Jahnke T, Dörner R 2012 J. Chem. Phys. 137 104308Google Scholar

    [10]

    Gong X C, Kunitski M, Ph H Schmidt L, Jahnke T, Czasch A, Dörner R, Wu J 2013 Phys. Rev. A 88 013422Google Scholar

    [11]

    Ding X Y, Haertelt M, Schlauderer S, Schuurman M, Naumov A, Villeneuve D, McKellar A, Corkum P, Staudte A 2013 Phys. Rev. Lett. 118 153001Google Scholar

    [12]

    Tielens A 2013 Rev. Mod. Phys. 85 1021Google Scholar

    [13]

    Zhang Y, Jiang T, Wei L, Luo D, Wang X, Yu W, Hutton R, Zou Y, Wei B 2018 Phys. Rev. A 97 022703Google Scholar

    [14]

    Wang E L, Shan X, Shen Z J, Gong M M, Tang Y G, Pan Y, Lau K C, Chen X J 2015 Phys. Rev. A 91 052711Google Scholar

    [15]

    Wang X C, Zhang Y, Lu D, Lu G C, Wei B R, Zhang B H, Tang Y J, Hutton R, Zou Y M 2014 Phys. Rev. A 90 062705Google Scholar

    [16]

    Kusakabe T, Satoh S, Tawara H, Kimura M 2001 Phys. Rev. Lett. 87 328Google Scholar

    [17]

    Scully S, Senthil V, Wyer J, Shah M, Montenegro E, Kimura M, Tawara H 2005 Phys. Rev. A 72 030701Google Scholar

    [18]

    Mebel A M, Bandrauk A D 2008 J. Chem. Phys. 129 224311Google Scholar

    [19]

    Psciuk B T, Tao P, Schlegel H B 2010 J. Phys. Chem. A 114 7653Google Scholar

    [20]

    Xu H L, Okino T, Yamanouchi K 2009 J. Chem. Phys. Chem. Phys. Lett. 469 255Google Scholar

    [21]

    Xu H L, Okino T, Yamanouchi K 2009 J. Chem. Phys. 131 1659 151102Google Scholar

    [22]

    Xu H L, Okino T, Yamanouchi K 2011 Appl. Phys. A 104 941Google Scholar

    [23]

    Okino T, Watanabe A, Xu H L, Yamanouchi K 2012 Phys. Chem. Chem. Phys. 14 4230Google Scholar

    [24]

    Okino T, Watanabe A, Xu H L, Yamanouchi K 2012 Phys. Chem. Chem. Phys. 14 10640Google Scholar

    [25]

    Ma C, Xu S Y, Zhao D M, Guo D L, Yan S C, Feng W T, Zhu X L, Ma X W 2020 Phys. Rev. A 101 052701Google Scholar

    [26]

    Ma X W, Zhang R T, Zhang S F, Zhu X L, Feng W T, Guo D L, Li B, Liu H P, Li C Y, Wang J G, Yan S C, Zhang P J, Wang Q 2011 Phys. Rev. A 83 052707Google Scholar

    [27]

    Yuan H, Xu S Y, Li T T, Liu Y, Qian D B, Guo D L, Zhu X L, Ma X W 2020 Phys. Rev. A 102 062808Google Scholar

    [28]

    Li Y T, Xu S Y, Guo D L, Jia S K, Jiang X J, Zhu X L, Ma X W 2019 J. Chem. Phys. 150 144311Google Scholar

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出版历程
  • 收稿日期:  2021-11-30
  • 修回日期:  2022-01-21
  • 上网日期:  2022-02-02
  • 刊出日期:  2022-05-05

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