Novel mechanism of damage introduction into carbon nanotubes caused by irradiation in gas medium

被引：4

作者：

Danilchenko, Boris A. ^{[1
]}

Tripachko, Nikolay A. ^{[1
]}

Uvarova, Irina Y. ^{[1
]}

Yaskovets, Ivan I. ^{[1
]}

机构：

[1] Inst Phys NASU, UA-03028 Kiev, Ukraine

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2013年 / 250卷 / 08期

关键词：

carbon nanotubes; gas environment; irradiation; ELECTRON-IRRADIATION;

D O I：

10.1002/pssb.201200976

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

In situ measurements of the resistance changes of carbon nanotube bundles irradiated by Co-60 -quanta at room temperature are presented. The peculiarity of our study consists in providing the sample irradiation in a hermetic cell filled with different gases at atmosphere pressure. Here we demonstrate the results for irradiation in hydrogen, deuterium, helium and argon media. The obtained dependences of the resistance change versus irradiation dose in vacuum are presented, too. We have developed a novel two-stage mechanism, which implies defect introduction by energetic intermediate particles that are gas atoms. Preliminary calculations for Compton electrons (0.85MeV) and atmospheric gas pressure show the high efficiency of this two-stage mechanism in comparison to conventional one-stage mechanism. It is shown that the defect introduction rate in the developed two-stage mechanism is strongly dependent on the gas atomic mass and coincides well with our experimental results.

引用

页码：1488 / 1491

页数：4

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