Mechanism of the radiation-induced transformations of fluoroform in solid noble gas matrixes

Sosulin I.S., Shiryaeva E.S., Feldman V.I.
Тип документаJournal Article
Дата публикации2017-09-01
Название журналаRadiation Physics and Chemistry
Издатель
  • Radiation
Краткое описание
Abstract The X-ray induced transformations in the CHF 3 /Ng systems (Ng=Ne, Ar, Kr or Xe) at 6 K were studied by FTIR spectroscopy. The radiation-induced decomposition of CHF 3 was found to be rather inefficient in solid xenon with low ionization energy, which suggests primary significance of the positive hole transfer from matrix to the fluoroform molecule. CF 3 • , : C F 2 , CHF 2 • and CF 4 were identified as the products of low-temperature radiolysis in all the noble gas matrixes. In addition, the anionic complex HF ⋯ CF 2 − was detected in Ne and Ar matrixes. The radiolysis also resulted in formation of noble gas compounds (HArF in argon, HKrF in krypton, and XeF 2 in xenon). While XeF 2 and HArF were essentially formed directly after irradiation (presumably due to reactions of ’hot’ fluorine atoms), HKrF mainly resulted from annealing of irradiated samples below 20 K due to thermally induced mobility of trapped fluorine atoms. In both krypton and xenon matrixes, the thermally induced reactions of F atoms occur at lower temperatures than those of H atoms, while the opposite situation is observed in argon. The mechanisms of the radiation-induced processes and their implications are discussed.
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1. Sosulin I.S., Shiryaeva E.S., Feldman V.I. Mechanism of the radiation-induced transformations of fluoroform in solid noble gas matrixes // Radiation Physics and Chemistry. 2017. Т. 138. С. 60–66.
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TY - JOUR

DO - 10.1016/j.radphyschem.2017.03.016

UR - http://dx.doi.org/10.1016/j.radphyschem.2017.03.016

TI - Mechanism of the radiation-induced transformations of fluoroform in solid noble gas matrixes

T2 - Radiation Physics and Chemistry

AU - Sosulin, Ilya S.

AU - Shiryaeva, Ekaterina S.

AU - Feldman, Vladimir I.

PY - 2017

DA - 2017/09

PB - Elsevier BV

SP - 60-66

VL - 138

SN - 0969-806X

ER -

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@article{2017,

doi = {10.1016/j.radphyschem.2017.03.016},

url = {https://doi.org/10.1016%2Fj.radphyschem.2017.03.016},

year = 2017,

month = {sep},

publisher = {Elsevier {BV}},

volume = {138},

pages = {60--66},

author = {Ilya S. Sosulin and Ekaterina S. Shiryaeva and Vladimir I. Feldman},

title = {Mechanism of the radiation-induced transformations of fluoroform in solid noble gas matrixes}

}

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Sosulin, Ilya S., Ekaterina S. Shiryaeva, and Vladimir I. Feldman. “Mechanism of the Radiation-Induced Transformations of Fluoroform in Solid Noble Gas Matrixes.” Radiation Physics and Chemistry 138 (2017): 60–66. Crossref. Web.