A new view on positronium in polymers

被引：20
|
作者：
Dauwe, C
Consolati, G
Kansy, J
Van Waeyenberge, B
机构：
[1] State Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium
[2] Politecn Milan, Ist Nazl Fis Mat, Dipartimento Fis, I-20133 Milan, Italy
[3] Silesian Univ, Inst Phys & Chem Met, PL-40007 Katowice, Poland
来源：
PHYSICS LETTERS A | 1998年 / 238卷 / 06期
关键词：
positron; polymer; free volume;
D O I：
10.1016/S0375-9601(97)00905-5
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
A new model is presented describing the annihilation of positronium in polymers. Ps is formed in the bulk and is trapped into the free volume holes with epithermal initial energy where it thermalizes towards its ground state. This model was verified by interpreting lifetime spectra in an amorphous cross-linked polyurethane. (C) 1998 Elsevier Science B.V.
引用
收藏
页码：379 / 384
页数：6
相关论文
共 50 条
  • [31] A NEW SCHEME OF THE POSITRONIUM CALCULATIONS
    PIVOVAROV, GB
    MODERN PHYSICS LETTERS A, 1991, 6 (09) : 831 - 839
  • [32] NEW STATES OF POSITRONIUM AND THE NEUTRINO
    BROWNE, PF
    PHYSICS LETTERS A, 1981, 81 (2-3) : 121 - 124
  • [33] Energy dissipation of para-positronium in polymers and silica glass
    Kobayashi, Yoshinori
    Sato, Kiminori
    Yamawaki, Masato
    Michishio, Koji
    Oka, Toshitaka
    Washio, Masakazu
    APPLIED PHYSICS EXPRESS, 2022, 15 (07)
  • [34] Calculation of the lifetime of positronium in polymers via molecular dynamics simulations
    Schmitz, H
    Müller-Plathe, F
    JOURNAL OF CHEMICAL PHYSICS, 2000, 112 (02): : 1040 - 1045
  • [35] Positronium formation at low temperatures in polymers and other molecular solids
    Hirade, T
    ACTA PHYSICA POLONICA A, 2005, 107 (04) : 615 - 622
  • [36] Mechanism of enhanced positronium formation in low-temperature polymers
    He, CQ
    Shantarovich, VP
    Suzuki, T
    Stepanov, SV
    Suzuki, R
    Matsuo, M
    JOURNAL OF CHEMICAL PHYSICS, 2005, 122 (21):
  • [37] Positronium formed by recombination of positron-electron pairs in polymers
    Sato, K.
    Shanai, D.
    Hotani, Y.
    Ougizawa, T.
    Ito, K.
    Hirata, K.
    Kobayashi, Y.
    PHYSICAL REVIEW LETTERS, 2006, 96 (22)
  • [38] POSITRONIUM LIFETIME IN AN ELLIPSOIDAL FREE-VOLUME HOLE OF POLYMERS
    JEAN, YC
    SHI, H
    JOURNAL OF NON-CRYSTALLINE SOLIDS, 1994, 172 : 806 - 814
  • [39] Positronium lifetime in an ellipsoidal free-volume hole of polymers
    Jean, Y.C.
    Shi, H.
    Dai, G.H.
    Huang, C.M.
    Liu, J.
    Materials Science Forum, 1995, 175-178 (pt 2) : 691 - 694
  • [40] Some aspects of positronium interaction with elementary free volumes in polymers
    Shantarovich, VP
    ACTA PHYSICA POLONICA A, 2001, 99 (3-4) : 487 - 495
12345