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Hydrogen Concentration Determination of Carbon Materials by Elastic Recoil Detection Analysis

H. Kakiuchi, Tomohiro Kobayashi, Takayuki Terai

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Abstract

Elastic recoil detection analysis (ERDA) is a useful, non-destructive method to determine the hydrogen concentration in several materials. By means of the method, we measured the hydrogen concentration of a diamond-like carbon (DLC) thin film prepared by RF magnetron sputtering method and successfully determined its depth distribution by the comparison of the ERDA spectrum and the DEPTH code calculation. The hydrogen concentration was about 35 at. % and less near the surface region of the DLC thin film, which is in the appropriate concentration range for DLC previously reported. As a result, we confirmed that ERDA is an effective method for measuring hydrogen concentration without destruction.

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Elastic recoil detection analysis (ERDA) is a useful, non-destructive method to determine the hydrogen concentration in several materials. By means of the method, we measured the hydrogen concentration of a diamond-like carbon (DLC) thin film prepared by RF magnetron sputtering method and successfully determined its depth distribution by the comparison of the ERDA spectrum and the DEPTH code calculation. The hydrogen concentration was about 35 at. % and less near the surface region of the DLC thin film, which is in the appropriate concentration range for DLC previously reported. As a result, we confirmed that ERDA is an effective method for measuring hydrogen concentration without destruction.

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Available abstract

Elastic recoil detection analysis (ERDA) is a useful, non-destructive method to determine the hydrogen concentration in several materials. By means of the method, we measured the hydrogen concentration of a diamond-like carbon (DLC) thin film prepared by RF magnetron sputtering method and successfully determined its depth distribution by the comparison of the ERDA spectrum and the DEPTH code calculation. The hydrogen concentration was about 35 at. % and less near the surface region of the DLC thin film, which is in the appropriate concentration range for DLC previously reported. As a result, we confirmed that ERDA is an effective method for measuring hydrogen concentration without destruction.

Key concepts: Elastic recoil detection, Hydrogen, Materials science, Diamond-like carbon, Carbon fibers, Ion beam analysis, Thin film, Analytical Chemistry (journal)

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