Control of chemical reactions by core excitations

Tanaka, Kenichiro; Sako, Erika O.; Ikenaga, Eiji; Isari, Koji; Sardar, S. A.; Wada, S.; Sekitani, T.; Mase, Kenji; Ueno, Nobuo

doi:10.1016/s0368-2048(01)00301-2

Cited by 50 publications

(32 citation statements)

References 30 publications

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“…This process is called X-ray induced electron stimulated desorption (XESD) in which the excitation energy is driven from the substrate to the adsorbed molecules by the way of secondary electrons [13][14][15]. One possible mechanism for the desorption of (H 2 O) n H + that is the XESD, which induced by secondary electron from the rare gas atoms.…”

Section: Resultsmentioning

confidence: 99%

Photodesorption of ionized water clusters from water physisorbed on rare gas solids

et al. 2005

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Section: Resultsmentioning

confidence: 99%

Photodesorption of ionized water clusters from water physisorbed on rare gas solids

et al. 2005

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“…This is in considerable contrast to soft X-ray damage studies of ester-containing polymers evaluated by total and partial ion yield measurements where there are very strong changes in the critical dose and chemistry. [30][31][32] This is because the ion yield measurements reflect the primary damage processes. This observation emphasizes that the net damage measured in this work is dominated by integration over a wide range of secondary processes, which tend to mask differences that might occur in primary damage events.…”

Section: Pet Damage In the O 1s Edgementioning

confidence: 99%

Quantitative Evaluation of Radiation Damage to Polyethylene Terephthalate by Soft X-rays and High-energy Electrons

et al. 2009

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The chemical changes and absolute rates in radiation damage to polyethylene terephthalate (PET) caused by soft X-rays and energetic electrons have been measured using a scanning transmission X-ray microscope (STXM). Electron beam damage at two different dose rates and a range of doses was performed in an 80 keV transmission electron microscope (TEM). The STXM beam was used to create damage patterns with systematically varied doses of monochromatic soft X-rays on an adjacent piece of the same PET sample. NEXAFS spectroscopy at the C 1s and O 1s edges was used to study the chemistry of the radiation damage and to determine quantitative critical doses for PET damage by both types of radiation. The spectral changes were similar for damage by electrons and X-rays, indicating the radiation chemistry is dominated by secondary processes, not the primary event. The critical dose for chemical changes determined from C 1s spectral features is 4.2(6) × 10 8 Gy and was the same for soft X-rays and electrons within measurement uncertainties. The critical dose for specific damage processes (as defined by changes in several different, bond-specific spectral features) was found to be similar in the C 1s region and was comparable between C 1s and O 1s edges for electron beam damage. There were statistically different critical doses for soft X-ray damage as probed by changes in O 1s spectral features related to carbonyl and ester bonds.

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“…The EICO studies of condensed molecules have been described in detail in a previous review [9]. EICO has also been applied to a poly-methylmethacrylate (PMMA) thin film [26,[36][37][38][39], a Si(100) surface terminated by fluorine [13], a Si(111) fluorinated by XeF 2 [40], a H 2 O dissociatively chemisorbed on a Si(100) surface (HO/Si(100)) [19,21,41,42], a CaF 2 (111) film epitaxially grown on Si(111) [13,43] and a TiO 2 (110) surface [44,45]. Further information on EICO studies of surfaces is available at the homepage of http://pfwww.kek.jp/eico/EICO.html.…”

Section: Introductionmentioning

confidence: 99%

Development of New Apparatus for Electron–Polar‐Angle‐Resolved‐Ion Coincidence Spectroscopy and Auger–Photoelectron Coincidence Spectroscopy

Mase

Kobayashi

Isari

2004

Correlation Spectroscopy of Surfaces, Thin Films, and Nanostructures

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Control of chemical reactions by core excitations

Cited by 50 publications

References 30 publications

Photodesorption of ionized water clusters from water physisorbed on rare gas solids

Photodesorption of ionized water clusters from water physisorbed on rare gas solids

Quantitative Evaluation of Radiation Damage to Polyethylene Terephthalate by Soft X-rays and High-energy Electrons

Development of New Apparatus for Electron–Polar‐Angle‐Resolved‐Ion Coincidence Spectroscopy and Auger–Photoelectron Coincidence Spectroscopy

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