THE EFFECT OF DOSE-RATE ON IMAGING AROMATIC ORGANIC-CRYSTALS

被引：37

作者：

FRYER, JR

机构：

[1] Univ of Glasgow, Glasgow, Scotl, Univ of Glasgow, Glasgow, Scotl

来源：

ULTRAMICROSCOPY | 1987年 / 23卷 / 3-4期

关键词：

CRYSTALS - Microscopic Examination - MICROSCOPES; ELECTRON - Imaging Techniques - ORGANIC COMPOUNDS - Radiation Effects;

D O I：

10.1016/0304-3991(87)90242-7

中图分类号：

TH742 [显微镜];

学科分类号：

摘要：

Previous studies on electron pulse radiolysis have indicated that the concentration of radiolytic products can be radiation-dose dependent. Experiments have been performed using aromatic monolayer films to determine if this dose-rate effect was significant in the electron microscope. Langmuir-Blodgett films of acetyl pyrene and 9-butyl-10-anthryl propionic acid were examined under conventional diffraction and it was found that the first-order reflections faded after a dose of 3-4 e/A**2. However, using a high-intensity electron beam for exposure times between 10 and 100 ms, lattice images were obtained after sustained electron doses of 90-100 e/A**2.

引用

页码：321 / 327

页数：7

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