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Alcantara KF, Rocha AB, Gomes AHA, Wolff W, Sigaud L, Santos ACF. Kinetic Energy Release of the Singly and Doubly Charged Methylene Chloride Molecule: The Role of Fast Dissociation. J Phys Chem A 2016; 120:6728-37. [DOI: 10.1021/acs.jpca.6b05368] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- K. F. Alcantara
- Instituto Nacional de Tecnologia, 20081-312 Rio de Janeiro, RJ, Brazil
| | - A. B. Rocha
- Instituto
de Química, Universidade Federal do Rio de Janeiro, 21941-909 Rio de Janeiro, RJ, Brazil
| | - A. H. A. Gomes
- Instituto
de Física Gleb Wataghin, Universidade Estadual de Campinas, 13083-859 Campinas, SP, Brazil
| | - W. Wolff
- Instituto
de Física, Universidade Federal do Rio de Janeiro, 21941-972 Rio de Janeiro, RJ, Brazil
| | - L. Sigaud
- Instituto
de Física, Universidade Federal Fluminense, 24210-346 Niterói, RJ, Brazil
| | - A. C. F. Santos
- Instituto
de Física, Universidade Federal do Rio de Janeiro, 21941-972 Rio de Janeiro, RJ, Brazil
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Gong X, Song Q, Ji Q, Pan H, Ding J, Wu J, Zeng H. Strong-field dissociative double ionization of acetylene. PHYSICAL REVIEW LETTERS 2014; 112:243001. [PMID: 24996086 DOI: 10.1103/physrevlett.112.243001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2013] [Indexed: 05/21/2023]
Abstract
We investigate dissociative double ionization of acetylene, one of the smallest organic molecules yet with a rich electronic structure, in strong laser fields by measuring two fragment ions and two electrons in coincidence. The two-body fragmentation channels are dominated by the removal of electrons from the lower-lying molecular orbitals rather than from the highest occupied one. The electron localization-assisted enhanced ionization mechanism plays a central role for the strong-field deprotonation ionization of acetylene by releasing the second electron from the up-field potential well of the hydrogen site at the internuclear distance near twice the equilibrium value of the C-H bond.
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Affiliation(s)
- Xiaochun Gong
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Qiying Song
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Qinying Ji
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Haifeng Pan
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Jingxin Ding
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Jian Wu
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
| | - Heping Zeng
- State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai 200062, China
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Sabzyan H, Keshavarz E, Noorisafa Z. Diatomic dications and dianions. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2013. [DOI: 10.1007/s13738-013-0359-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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4
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Bucksbaum PH, Petrovic V. On the possibility of enhanced multiple ionization near conical intersections. Faraday Discuss 2013; 163:475-84 discussion 513-43. [DOI: 10.1039/c3fd20154f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Wu J, Meckel M, Schmidt L, Kunitski M, Voss S, Sann H, Kim H, Jahnke T, Czasch A, Dörner R. Probing the tunnelling site of electrons in strong field enhanced ionization of molecules. Nat Commun 2012; 3:1113. [DOI: 10.1038/ncomms2130] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2012] [Accepted: 09/07/2012] [Indexed: 01/20/2023] Open
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Franceschi P, Ascenzi D, Tosi P, Thissen R, Zabka J, Roithová J, Ricketts CL, De Simone M, Coreno M. Dissociative double photoionization of N2 using synchrotron radiation: Appearance energy of the N2+ dication. J Chem Phys 2007; 126:134310. [PMID: 17430035 DOI: 10.1063/1.2714521] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Photoionization cross sections for the production of the doubly charged ion N2+ from N2 have been measured by means of synchrotron radiation in the photon energy range from 50 to 110 eV. The appearance energy for N2+ has been determined as 55.2+/-0.2 eV, i.e., about 1.3 eV higher than the spectroscopic dissociation limit leading to the charge asymmetric dissociation channel N2+(2P)+N(4S) at 53.9 eV. The onset of a second threshold at 59.9+/-0.2 eV is detected and the energy dependence of photoion intensities near the threshold regions is interpreted in terms of the Wannier theory. The production of the N2+ dication is discussed in terms of direct and indirect mechanisms for dissociative charge asymmetric photoionization and by comparison with the potential energy curves of the intermediate N(2)2+ dication. Experimental evidences for the opening of the Coulomb explosion channel N2++N+ at high photon energies are provided by measuring the kinetic energy release spectra of N2+ fragments at selected photon energies.
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Affiliation(s)
- Pietro Franceschi
- Dipartimento di Fisica, Università di Trento, via Sommarive 14, 38050 Povo (TN), Italy.
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Chelkowski S, Conjusteau A, Zuo T, Bandrauk AD. Dissociative ionization of H2 + in an intense laser field: Charge-resonance-enhanced ionization, Coulomb explosion, and harmonic generation at 600 nm. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 54:3235-3244. [PMID: 9913844 DOI: 10.1103/physreva.54.3235] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Constant E, Stapelfeldt H, Corkum PB. Observation of enhanced ionization of molecular ions in intense laser fields. PHYSICAL REVIEW LETTERS 1996; 76:4140-4143. [PMID: 10061211 DOI: 10.1103/physrevlett.76.4140] [Citation(s) in RCA: 66] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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Kulander KC, Mies FH, Schafer KJ. Model for studies of laser-induced nonlinear processes in molecules. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:2562-2570. [PMID: 9913169 DOI: 10.1103/physreva.53.2562] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Chelkowski S, Zuo T, Atabek O, Bandrauk AD. Dissociation, ionization, and Coulomb explosion of H2+ in an intense laser field by numerical integration of the time-dependent Schrödinger equation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 52:2977-2983. [PMID: 9912584 DOI: 10.1103/physreva.52.2977] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Cornaggia C, Schmidt M, Normand D. Laser-induced nuclear motions in the Coulomb explosion of C2H2+ ions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:1431-1437. [PMID: 9911728 DOI: 10.1103/physreva.51.1431] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Ben-Itzhak I, Ginther SG, Krishnamurthi V, Carnes KD. Kinetic-energy release in CO dissociation caused by fast F4+ impact. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:391-399. [PMID: 9911596 DOI: 10.1103/physreva.51.391] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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