Photolysis of water-radical ions H2O+ in the xuv: Fragmentation through dicationic states

H.B. Pedersen; C. Domesle; L. Lammich; S. Dziarzhytski; N. Guerassimova; R. Treusch; L.S. Harbo; O. Heber; B. Jordon-Thaden; T. Arion; M. Förstel; M. Stier; U. Hergenhahn; A. Wolf

doi:10.1103/PhysRevA.87.013402

Photolysis of water-radical ions H₂O⁺ in the xuv: Fragmentation through dicationic states

H.B. Pedersen, C. Domesle, L. Lammich, S. Dziarzhytski, N. Guerassimova, R. Treusch, L.S. Harbo, O. Heber, B. Jordon-Thaden, T. Arion, M. Förstel, M. Stier, U. Hergenhahn, A. Wolf

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Abstract

The photofragmentation of the water cation HO through dicationic states has been studied at 35.0±0.2 nm (35.4±0.3 eV) and 21.8±0.2 nm (56.8±0.5 eV) with a crossed ion-photon beams experiment at the free electron laser FLASH. The dissociation of the dications is found to be similar at the two wavelengths and to proceed into O0+2H, OH+H, and O+H , with determined ratios σ OH+H /σ O+H=4.2±0.3 and σ OH+H/σO0+2H>0.7. The measured kinetic-energy releases for these processes are consistent with three-body breakup (O+2H) occurring mainly through the 2A'' and 2A'' states of HO and two-body breakup (OH+H) occurring through X A'', 1A', and 1A'' states of H O, as predicted in a recent theoretical study. In addition to the kinetic-energy releases, we also report on fragment correlation in the three-body channel where the two protons carry the major part of the released momentum.

Original language	English
Journal	Physical Review A
Volume	87
Issue	1
Pages (from-to)	013402-1-013401-10
Number of pages	10
ISSN	2469-9926
DOIs	https://doi.org/10.1103/PhysRevA.87.013402
Publication status	Published - 2 Jan 2013

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Pedersen, H. B., Domesle, C., Lammich, L., Dziarzhytski, S., Guerassimova, N., Treusch, R., Harbo, L. S., Heber, O., Jordon-Thaden, B., Arion, T., Förstel, M., Stier, M., Hergenhahn, U., & Wolf, A. (2013). Photolysis of water-radical ions H₂O⁺ in the xuv: Fragmentation through dicationic states. Physical Review A, 87(1), 013402-1-013401-10. https://doi.org/10.1103/PhysRevA.87.013402

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title = "Photolysis of water-radical ions H2O+ in the xuv: Fragmentation through dicationic states",

abstract = "The photofragmentation of the water cation HO through dicationic states has been studied at 35.0±0.2 nm (35.4±0.3 eV) and 21.8±0.2 nm (56.8±0.5 eV) with a crossed ion-photon beams experiment at the free electron laser FLASH. The dissociation of the dications is found to be similar at the two wavelengths and to proceed into O0+2H, OH+H, and O+H , with determined ratios σ OH+H /σ O+H=4.2±0.3 and σ OH+H/σO0+2H>0.7. The measured kinetic-energy releases for these processes are consistent with three-body breakup (O+2H) occurring mainly through the 2A'' and 2A'' states of HO and two-body breakup (OH+H) occurring through X A'', 1A', and 1A'' states of H O, as predicted in a recent theoretical study. In addition to the kinetic-energy releases, we also report on fragment correlation in the three-body channel where the two protons carry the major part of the released momentum.",

author = "H.B. Pedersen and C. Domesle and L. Lammich and S. Dziarzhytski and N. Guerassimova and R. Treusch and L.S. Harbo and O. Heber and B. Jordon-Thaden and T. Arion and M. F{\"o}rstel and M. Stier and U. Hergenhahn and A. Wolf",

year = "2013",

month = jan,

day = "2",

doi = "10.1103/PhysRevA.87.013402",

language = "English",

volume = "87",

pages = "013402--1--013401--10",

journal = "Physical Review A",

issn = "2469-9926",

publisher = "American Physical Society",

number = "1",

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Pedersen, HB, Domesle, C, Lammich, L, Dziarzhytski, S, Guerassimova, N, Treusch, R, Harbo, LS, Heber, O, Jordon-Thaden, B, Arion, T, Förstel, M, Stier, M, Hergenhahn, U & Wolf, A 2013, 'Photolysis of water-radical ions H₂O⁺ in the xuv: Fragmentation through dicationic states', Physical Review A, vol. 87, no. 1, pp. 013402-1-013401-10. https://doi.org/10.1103/PhysRevA.87.013402

TY - JOUR

T1 - Photolysis of water-radical ions H2O+ in the xuv: Fragmentation through dicationic states

AU - Pedersen, H.B.

AU - Domesle, C.

AU - Lammich, L.

AU - Dziarzhytski, S.

AU - Guerassimova, N.

AU - Treusch, R.

AU - Harbo, L.S.

AU - Heber, O.

AU - Jordon-Thaden, B.

AU - Arion, T.

AU - Förstel, M.

AU - Stier, M.

AU - Hergenhahn, U.

AU - Wolf, A.

PY - 2013/1/2

Y1 - 2013/1/2

N2 - The photofragmentation of the water cation HO through dicationic states has been studied at 35.0±0.2 nm (35.4±0.3 eV) and 21.8±0.2 nm (56.8±0.5 eV) with a crossed ion-photon beams experiment at the free electron laser FLASH. The dissociation of the dications is found to be similar at the two wavelengths and to proceed into O0+2H, OH+H, and O+H , with determined ratios σ OH+H /σ O+H=4.2±0.3 and σ OH+H/σO0+2H>0.7. The measured kinetic-energy releases for these processes are consistent with three-body breakup (O+2H) occurring mainly through the 2A'' and 2A'' states of HO and two-body breakup (OH+H) occurring through X A'', 1A', and 1A'' states of H O, as predicted in a recent theoretical study. In addition to the kinetic-energy releases, we also report on fragment correlation in the three-body channel where the two protons carry the major part of the released momentum.

AB - The photofragmentation of the water cation HO through dicationic states has been studied at 35.0±0.2 nm (35.4±0.3 eV) and 21.8±0.2 nm (56.8±0.5 eV) with a crossed ion-photon beams experiment at the free electron laser FLASH. The dissociation of the dications is found to be similar at the two wavelengths and to proceed into O0+2H, OH+H, and O+H , with determined ratios σ OH+H /σ O+H=4.2±0.3 and σ OH+H/σO0+2H>0.7. The measured kinetic-energy releases for these processes are consistent with three-body breakup (O+2H) occurring mainly through the 2A'' and 2A'' states of HO and two-body breakup (OH+H) occurring through X A'', 1A', and 1A'' states of H O, as predicted in a recent theoretical study. In addition to the kinetic-energy releases, we also report on fragment correlation in the three-body channel where the two protons carry the major part of the released momentum.

UR - http://www.scopus.com/inward/record.url?scp=84871876241&partnerID=8YFLogxK

U2 - 10.1103/PhysRevA.87.013402

DO - 10.1103/PhysRevA.87.013402

M3 - Journal article

AN - SCOPUS:84871876241

SN - 2469-9926

VL - 87

SP - 013402-1-013401-10

JO - Physical Review A

JF - Physical Review A

IS - 1

ER -

Photolysis of water-radical ions H₂O⁺ in the xuv: Fragmentation through dicationic states

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