Study of the effect of electric field on positron annihilation parameters in polymers

被引：9
|
作者：
Mohamed, HFM [1 ]
机构：
[1] Menia Univ, Fac Sci, Dept Phys, Menia 61519, Egypt
来源：
RADIATION PHYSICS AND CHEMISTRY | 2003年 / 68卷 / 3-4期
关键词：
polymer; electric field; positron annihilation lifetime; positronium formatior;
D O I：
10.1016/S0969-806X(03)00203-2
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Positron annihilation lifetime measurements have been performed to study the effect of an external electric field in several polymers. The application of the electric field on polytetrafluoroethylene (PTFE) and ultrahigh-molecular weight polyethylene (UHMWPE) noticeably decreased the ortho-positronium (o-Ps) intensity. The o-Ps intensity increased with increasing electric field strength in the poly(ethylene terephthalate), PET, poly(ethylene naphthalate), PEN, and poly(aryl-ether-ether-ketone), PEEK samples. The data are consistent with a hypothesis that nonpolar polymers (PTFE and UHMWPE) show a decrease in the o-Ps intensity with increasing electric field, while the effect seems to be opposite in polar polymers (PEN, PET and PEEK). (C) 2003 Elsevier Science Ltd. All rights reserved.
引用
收藏
页码：449 / 452
页数：4
相关论文
共 50 条
  • [1] STUDY OF THE ELECTRIC-FIELD EFFECT IN POLYETHYLENE BY THE POSITRON-ANNIHILATION TECHNIQUE
    ELSAYED, AMA
    ABDELHADY, EE
    MOHSEN, M
    JOURNAL OF APPLIED POLYMER SCIENCE, 1993, 50 (10) : 1723 - 1726
  • [2] Positron annihilation in polymers
    Jean, Y.C.
    Materials Science Forum, 1995, 175-178 (pt 1) : 59 - 70
  • [3] ELECTRIC-FIELD EFFECTS IN POSITRON-ANNIHILATION IN PHENANTHRENE
    GORNIAK, W
    GOWOREK, T
    RYBKA, C
    CHEMICAL PHYSICS LETTERS, 1991, 187 (05) : 537 - 540
  • [4] Positron annihilation spectroscopy in polymers
    Faupel, F. (ff@tf.uni-kiel.de), Commemorative Association for the Japan World Exposition (1970); Research Foundation for Materials Science; Science Council of Japan (Trans Tech Publications Ltd): : 445 - 446
  • [5] STUDY OF OXIDIZED POLYMERS BY POSITRON-ANNIHILATION METHOD
    ONISHCHUK, VA
    PUDOV, VS
    SHANTAROVICH, VP
    YASINA, LL
    VYSOKOMOLEKULYARNYE SOEDINENIYA SERIYA A, 1982, 24 (12): : 2579 - 2583
  • [6] Positron annihilation spectroscopy in polymers
    Faupel, F
    Kanzow, J
    Günther-Schade, K
    Nagel, C
    Sperr, P
    Kögel, G
    POSITRON ANNIHILATION, ICPA-13, PROCEEDINGS, 2004, 445-6 : 219 - 223
  • [7] Positron-electron annihilation in the field of a fixed electric dipole
    1600, (32):
  • [8] Positron annihilation studies of the effect of gamma irradiation dose in polymers
    Al-Qaradawi, IY
    Britton, DT
    Abdel-Hady, EE
    Abdulmalik, DA
    Al-Shobaki, MA
    Minani, E
    RADIATION PHYSICS AND CHEMISTRY, 2003, 68 (3-4) : 457 - 461
  • [9] The buildup of the electric field during positron annihilation lifetime spectroscopy measurement
    Qi, CZ
    Ma, D
    Hu, YH
    Yan, FY
    Gao, H
    Yang, Z
    Zhou, XX
    Wang, TM
    JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 2001, 39 (03) : 332 - 336
  • [10] EFFECT OF MAGNETIC FIELD ORIENTATION ON POSITRON ANNIHILATION IN POTASSIUM
    GUSTAFSON, DR
    BARNES, GT
    PHYSICAL REVIEW LETTERS, 1967, 18 (01) : 3 - +
12345