V. B. Essel’son

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

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V. G. Manzheliı̆

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

NА

N. А. Vinnikov

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

V. G. Gavrilko

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

B. A. Danilchenko

Institute of Physics

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С. Н. Попов

Oles Honchar Dnipro National University

N. A. Tripachko

Institute of Physics

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А. В. Долбин

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

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National Academy of Sciences of Ukraine

B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine

Physico-Technical Institute

Russian Academy of Sciences

Physicotechnical Institute

Włodzimierz Trzebiatowski Institute of Low Temperature and Structure Research

Polish Academy of Sciences

Institute of Physics

Czech Academy of Sciences, Institute of Physics

Taras Shevchenko National University of Kyiv

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Hydrogen sorption and radial thermal expansion of bundles of single-walled nanotubes irradiated by γ-rays in hydrogen atmosphere

Low Temperature Physics (2011)

А. В. Долбин V. B. Essel’son V. G. Gavrilko V. G. Manzheliı̆N. А. Vinnikov

The influence of radiation exposure in hydrogen atmosphere on the radial thermal expansion of single-walled carbon nanotubes and on their sorption of hydrogen is studied. The irradiation was carried out with cobalt-60 γ-rays (with an energy of 1.2 MeV and an irradiation dose of 1.5·107 rad) in the normal hydrogen atmosphere under pressure 1 atm and at temperature of 300 K. The sorption and desorption of hydrogen by samples of nanotubes were investigated over the temperature range 15–1170 K before and after irradiation. It was found that the irradiation of carbon nanotubes (CNTs) in hydrogen atmosphere leads to considerable increasing an amount of hydrogen sorbed by the sample. The irradiation in hydrogen atmosphere resulted in increasing absolute values of radial thermal expansion of CNTs bundles over the temperature range investigated (2–120 K). The effects of hydrogen physically and chemically sorbed in bundles of CNTs on the radial thermal expansion of the irradiated samples were distinguished.

Thermal desorption

Atmospheric temperature range

10.1063/1.3643271

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