Preparing and thickness monitoring for the carbon foils

Yunmin Sun

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Preparing and thickness monitoring for the carbon foils

更新时间：2022-08-16

- Preparing and thickness monitoring for the carbon foils
- Nuclear Techniques Vol. 05, Issue 5, (1982)
- 作者机构：
  
  中国科学院近代物理研究所
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：29 October 1980，
  
  Published：1982-10
- 稿件说明：
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Yunmin Sun. Preparing and thickness monitoring for the carbon foils[J]. Nuclear techniques, 1982, 05(5): 33-34.
DOI：

Yunmin Sun. Preparing and thickness monitoring for the carbon foils[J]. Nuclear techniques, 1982, 05(5): 33-34. DOI：

摘要

我们用GD-450B高真空多层镀膜机制备碳膜，蒸发支架如图1所示。蒸发前，靠支架上的弹簧，使可滑动的一根碳棒的尖端与另一根被固定的碳棒的斜面接触；当点弧后断弧时，可在真空室外操纵手动接触棒，使它碰撞碳棒末端铜套，引起多次接触电弧。在10

-5

mmHg的真空室中，用这样二对支架，在不破坏真空的情况下，使用0~150A的断续弧流，在半小时左右，可蒸发到80~100µg/cm

厚的碳膜，甚至更厚些。蒸发源与工件的距离为18cm，我们使用上海碳素厂及兰州碳素厂

6mm的光谱纯碳棒。

Abstract

Several vacuum evaporating techniques and parting agents were tested in order to prepare the stripper foil for accelerator. The transmittance was measured at different monochromatic light during the evaporation to monitor the thickness of the carbon foil. The method of measuring the resistance value of carbon foil on a slide was tested to mark a scale of the thickness of carbonfoil.

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Keywords

references

Suehiro Takeuchi et al . , Nucl. Instr. Meth . , 158 , 335 （ 1978 ）.

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