Absolute oscillator strengths (10–60 eV) for the photoabsorption, photoionisation and fragmentation of H20s

Tan, K. H.; Brion, C.E.; Leeuw, Ph E Van der; Wiel, M.J. van der

doi:10.1016/0301-0104(78)85080-0

Cited by 229 publications

(129 citation statements)

References 30 publications

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“…Indeed, the cross sections for O + production by C 3+ ions at the Bragg peak are about one order of magnitude larger as compared with those for the above mentioned projectiles at any energy [23,24,27]. Our fi ndings have straightforward implications in the subsequent fast chemistry at the ionization site, such as the production of the highly reactive OH radicals, hydrogen peroxide, H 2 O 2 , as well as O 2 , showing that the marked differences in primary O production between high-LET particles and low-LET electrons, protons and photons can be the possible source of the observed differences in the fi nal products of ionizing particles.…”

Section: Discussionmentioning

confidence: 91%

“…[2], and photofragmentation results from Ref. [24] in the 30 -60 eV range. The sum of the three fractions was made equal to one.…”

Section: Previous Data Of Electrons Photons Protons and Heavy mentioning

confidence: 93%

“…2 clearly show that the fragments follow a sequential distribution with H 2 O + > OH + > Σ q O q+ . This distribution is characteristic of the dipole ionization of the water molecules [24] and express the decay probabilities following the ionization of one of its four valence molecular orbitals 1b 1 , 3a 1 , 1b 2 and 2a 1 , with ionization energies of 12.6, 14.7, 18.5 and 32.2 eV, respectively [24]. This dipole, sequential fragmentation pattern, has been always assumed to be the ionization pattern, independently of the particle type and energy, in water radiolysis modeling [1].…”

Section: Previous Data Of Electrons Photons Protons and Heavy mentioning

confidence: 96%

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Primary radicals production from water fragmentation by heavy ions

Montenegro¹,

Luna²

2005

Braz. J. Phys.

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The importance of fragmentation of water molecules by heavy ions is discussed for several different physical environments, including tumor treatment, planetary sciences and fi ssion reactors. The characteristics of the fragmentation yields by electrons, protons and photons are presented and compared with fragmentation yields of water molecules by C 3+ and O 5+ ions at energies corresponding to the Bragg peak. It is shown that for low energy electron loss and high energy electron capture, the water molecules essentially blow-out, releasing a much larger fraction of O q+ ions as compared with electrons, protons and photons.

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Section: Discussionmentioning

confidence: 91%

“…[2], and photofragmentation results from Ref. [24] in the 30 -60 eV range. The sum of the three fractions was made equal to one.…”

Section: Previous Data Of Electrons Photons Protons and Heavy mentioning

confidence: 93%

Section: Previous Data Of Electrons Photons Protons and Heavy mentioning

confidence: 96%

See 1 more Smart Citation

Primary radicals production from water fragmentation by heavy ions

Montenegro¹,

Luna²

2005

Braz. J. Phys.

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“…As already mentioned, the SI of H 2 O yields H 2 O + that, in a post-collisional process, can fragment into singly charged ions: H + , OH + , and O + [36]. Within this two-step mechanism, the branching ratios for formation of these cations must be similar to those measured in photoionization experiments [37]. The total SI cross sections from Ref.…”

Section: B Total Si and Ep Cross Sectionsmentioning

confidence: 99%

Ionization of water molecules by proton impact: Two nonperturbative studies of the electron-emission spectra

et al. 2013

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Two nonperturbative methods are applied to obtain total and singly differential (in the electron energy) cross sections of electron emission in proton collisions with H 2 O at impact energies in the range 10 keV E p 5 MeV. Both methods, one classical and one semiclassical, combine an independent particle treatment with a multicenter model potential description of the target. The excellent agreement obtained with experimental data supports the usefulness of the approximations involved and encourages the study of more complex systems.

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“…Therefore water photophysics/ photochemistry deserved the attention of several works in the scientific literature. [1][2][3][4][5][6][7][8][9][10][11][12] One specific and central issue concerns the absorption spectrum of water over a wide energy range. The water molecule is characterized by absorption of radiation in the infrared and ultraviolet ͑UV͒ regions.…”

Section: Introductionmentioning

confidence: 99%

Dynamic polarizability, Cauchy moments, and the optical absorption spectrum of liquid water: A sequential molecular dynamics/quantum mechanical approach

Mata

Cabral

Millot

et al. 2009

The Journal of Chemical Physics

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The dynamic polarizability and optical absorption spectrum of liquid water in the 6-15 eV energy range are investigated by a sequential molecular dynamics ͑MD͒/quantum mechanical approach. The MD simulations are based on a polarizable model for liquid water. Calculation of electronic properties relies on time-dependent density functional and equation-of-motion coupled-cluster theories. Results for the dynamic polarizability, Cauchy moments, S͑−2͒, S͑−4͒, S͑−6͒, and dielectric properties of liquid water are reported. The theoretical predictions for the optical absorption spectrum of liquid water are in good agreement with experimental information.

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Absolute oscillator strengths (10–60 eV) for the photoabsorption, photoionisation and fragmentation of H20s

Cited by 229 publications

References 30 publications

Primary radicals production from water fragmentation by heavy ions

Primary radicals production from water fragmentation by heavy ions

Ionization of water molecules by proton impact: Two nonperturbative studies of the electron-emission spectra

Dynamic polarizability, Cauchy moments, and the optical absorption spectrum of liquid water: A sequential molecular dynamics/quantum mechanical approach

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