Papers - 1983

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[1983_01]

Two different species of deuterium implanted into a pyrolytic graphite observed by XPS-SIMS

K. Ashida, K. Ichimura, K. Watanabe

J. Vac. Sci. Technol., A1(3) (1983) 1465-1468

[1983_02] *The text is Japanese.

Flash Desorption Spectroscopy of the Deuterium Implanted into a Pyrolytic Graphite

K. Ashida, K. Ichimura, K. Watanabe

J. Vac. Soc. Japan, 26(5) (1983) 397-401

[1983_03]

Tritium permeability and pressure dependence of 304L stainless steel in the temperature range 723 to 1023K

M. Matsumaya, J. D. Redman

Metallurgical Transactions A, 14A (1983) 498-500

[1983_04]

Permeation, diffusion and solution of hydrogen isotopes, methane, and inert gases in/through tetrafluoroethylene and polyethylene

H. Miyake, M. Matsuyama, K. Watanabe

J. Vac. Sci. Technol., A1(3) (1983) 1447-1451

[1983_05] *The text is Japanese.

Dissolution and Diffusion of Hydrogen Isotopes and Inert Gases in Organic Polymers

M. Matsuyama, H. Miyake, K. Watanabe

J. Vac. Soc. Japan, 26(5) (1983) 448-452

[1983_06] *The text is Japanese.

Daily Fluctuation of Background Count Rate of a Liquid Scintillation Counter

H. Satake

Radioisotopes, 32 (1983) 113-116

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[1983_01]

J. Vac. Sci. Technol. A, 1(3) (1983) 1465-1468

 Trapped states of deuterium implanted into a pyrolytic graphite with 5 keV were investigated by means of the x-ray photoelectron spectroscopy and the secondary ion mass spectrometry. Chemical shift and broadening of C1s peak were observed XPS spectra due deuterium-ion implantation at room temperature. The shift and the broadening increased with the deuterium fluence to reach constant values. In the SIMS spectra, CD^- and C₂D^- peaks appeared due to the deuterium implantation. The intensity of the CD^- peak increased with the fluence to reach a constant value, whereas that of the C₂D^- peak passed through a maximum to decrease to a constant value. A linear relation was observed between the chemical shift and the CD^- peak. The chemical shift and the CD^- peak disappeared after annealing at 600 C for 5 min, whereas the broadening of the C1s peak and the C₂D^- peak disappeared after annealing the sample at 900 C for 5 min. On the basis of these observations, it is concluded that at least two different species of the deuterium are formed in the graphite due to the deuterium implantation.

  PACS numbers: 82.80. Ms, 79.60. - I, 82.80. Pv, 61.70. Tm

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[1983_02] *The text is Japanese.

J. Vac. Soc. Japan, 26(5) (1983) 397-401

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[1983_03]

METALLURGICAL TRANSACTIONS A, VOLUME 14A, MARCH 1983, 498-500

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[1983_04]

J. Vac. Sci. Technol. A , 1(3) (1983) 1447-1451

 Permeation of three hydrogen isotopes, methane, and inert gases were measured for a tetrafluoroethylene(TFE) and a polyethylene(PE) film at room temperature by means of the time-lag method in order to establish physicochemical properties which determine the solubility and the diffusivity of these gases. It was observed that the diffusion constant of the inert gases changed exponentially with the heat of vaporization, and their solubility constant was an exponential function of the Lennard-Jones force constant of the gases for both films. On the other hand, hydrogen isotopes and methane deviated from these relations. It is concluded that the dispersive force plays an important role for the solution and the diffusion of the inert gases, whereas chemical interactions between the solute and the solvent play an important role.

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[1983_05] *The text is Japanese.

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[1983_06] *The text is Japanese.