Positron annihilation characteristics in multi-wall carbon nanotubes with different average diameters

被引：3
|
作者：
Tuyen, L. A. [1 ]
Kajcsos, Zs [2 ]
Lazar, K. [3 ]
Tap, T. D. [4 ]
Khiem, D. D. [1 ]
Phuc, P. T. [1 ]
机构：
[1] Vietnam Atom Energy Inst, Ctr Nucl Tech, 217 Nguyentrai St,Dist 1, Ho Chi Minh City, Vietnam
[2] Hungarian Acad Sci, Inst Particle & Nucl Phys Wigner Res Ctr Phys, H-114 Budapest, Hungary
[3] Hungarian Acad Sci, Inst Isotopes, Ctr Energy Res, H-114 Budapest, Hungary
[4] Univ Nat Sci, Dept Nucl Phys, Hochiminh City, Vietnam
来源：
16TH INTERNATIONAL CONFERENCE ON POSITRON ANNIHILATION (ICPA-16) | 2013年 / 443卷
关键词：
C-60; DIFFUSION;
D O I：
10.1088/1742-6596/443/1/012065
中图分类号：
O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];
学科分类号：
070203 ; 070304 ; 081704 ; 1406 ;
摘要：
Positron lifetime spectroscopy was used to study multi-wall carbon nanotubes. The measurements were performed in vacuum on the samples having different average diameters. The positron lifetime values depend on the nanotube diameter. The results also show an influence of the nanotube diameter on the positron annihilation intensity on the nanotube surface. The change in the annihilation probability is described and interpreted by the modified diffusion model introducing the positron escape rate from the nanotubes to their external surface.
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收藏
页数：4
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