十分消瘦的电制造高级präparat-unterlagen为绝对β-zählung

Nuclear Instruments Pub Date : 1958-10-01 DOI:10.1016/0369-643X(58)90027-6

E. Huster, W. Rausch

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引用次数: 6

摘要

用低衰变能量的放射性元素进行绝对β计数是困难的，因为在源和它的背衬中有吸收损失。如果半衰期很长，则需要扩展源。进一步表明，如果在计数器内部对源进行计数，则背板必须是导电的，以防止源充电，从而防止计数器的电场变形。介绍了一种制备总厚度为10 μg/cm2的85 × 30 mm2导电formvar箔的方法。导电性是通过首先将箔暴露在碳氢化合物大气中的辉光放电中，然后蒸发其上的银而获得的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Zur herstellung sehr dünner elektrisch leitender präparat-unterlagen für absolute β-zählung

Absolute β-counting with radioelements of low decay-energy is difficult because of absorption losses in the source and its backing. If moreover the half-life is very high, extended sources are necessary. It has been furthermore shown, that backings must be electrically conducting to prevent charging of the source and thereby distortion of the electric field of the counter, if counting is done with the source in the interior of the counter.

A method is described for preparing electrically conducting formvar foils of 85 × 30 mm² with an overall thickness of 10 μg/cm². The conductivity is attained by first exposing the foil to a glow discharge in a hydrocarbon atmosphere and then evaporating silver on it.

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