Investigation of the Influence of Ionization Radiation on Glassy Carbon Coatings, after Long Stay in the Outer Space on the International Space Station (ISS)

IF 0.3 4区综合性期刊 Q4 MULTIDISCIPLINARY SCIENCES

Comptes Rendus De L Academie Bulgare Des Sciences Pub Date : 2023-10-31 DOI:10.7546/crabs.2023.10.03

Dimitar Teodosiev, Anna Bouzekova-Penkova, Rositsa Koleva, Dimitar Tonev, Elena Geleva, Boyko Tsyntsarski, Peter Tzvetkov, Nikolay Goutev, Anguel Demerdjiev, Bozhidar Slavchev

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引用次数: 0

Abstract

In this study two types of samples of spectrally pure graphite, compacted and coated with glassy carbon, were analyzed with liquid scintillation spectrometry, scanning electron microscopy (SEM) and X-ray diffractometry (XRD). “Space” sample has been sent in outer space on the surface of ISS for 28 months. “Space” sample is compared with “reference” sample, made of the same material, but stored on Earth for the same period. Radiation environment data were collected using R3DR2-Lyulin instrument, located in the outer space very close to the samples, in the same module of ISS. The effect of cosmic radiation leads to slight increase of 14C content, detected by liquid scintillation spectrometry. SEM and thermal test using XRD did not show any noticeable changes in terms of structure and phase composition. This confirms the high degree of reliability of this material under significantly milder operating conditions in Earth orbit.

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电离辐射对国际空间站长时间停留后玻璃碳涂层影响的研究

本研究采用液体闪烁光谱法、扫描电子显微镜(SEM)和x射线衍射仪(XRD)对两种光谱纯石墨样品进行了分析。“太空”号样本已经在国际空间站表面被送往外太空28个月。“太空”样本与“参考”样本进行比较，“参考”样本由相同的材料制成，但在地球上储存的时间相同。辐射环境数据采集使用R3DR2-Lyulin仪器，该仪器位于离样品非常近的外层空间，位于ISS的同一模块中。宇宙辐射的作用导致14C含量略有增加，用液体闪烁光谱法检测。 SEM和XRD热测试均未发现结构和相组成有明显变化。这证实了这种材料在地球轨道上较为温和的运行条件下的高度可靠性。

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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来源期刊

Comptes Rendus De L Academie Bulgare Des Sciences 综合性期刊-综合性期刊

CiteScore

0.60

自引率

33.30%

发文量

181

审稿时长

3-6 weeks

期刊介绍： Founded in 1948 by academician Georgy Nadjakov, "Comptes rendus de l’Académie bulgare des Sciences" is also known as "Доклади на БАН","Доклады Болгарской академии наук" and "Proceeding of the Bulgarian Academy of Sciences". If applicable, the name of the journal should be abbreviated as follows: C. R. Acad. Bulg. Sci. (according to ISO)