کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10734122 | 1043982 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Positron annihilation lifetime and gas permeation studies of energetic ion-irradiated polycarbonate membranes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
فیزیک و نجوم
تشعشع
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Positron annihilation lifetime and gas permeation studies of energetic ion-irradiated polycarbonate membranes Positron annihilation lifetime and gas permeation studies of energetic ion-irradiated polycarbonate membranes](/preview/png/10734122.png)
چکیده انگلیسی
The polycarbonate membranes of 40-50 μm thicknesses were prepared by the solution cast method. These films were irradiated by a 60 MeV, C5+ ion beam with the fluence of 5Ã106, 4Ã108 and 1Ã1012 ions cmâ2. The ion beam effects were studied by the positron annihilation lifetime technique. The ortho-positronium (o-Ps) lifetime shows an increase with the ion dose 5Ã106, 4Ã108 ions cmâ2. For the films irradiated to the fluence of 1Ã1012 ions cmâ2, the o-Ps lifetime falls to the lower value. The results are interpreted in terms of change in the free volume. The gas permeability measurements also indicate an increase in the free volume in the samples irradiated upto the fluence of the 4Ã108 ions cmâ2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Radiation Physics and Chemistry - Volume 73, Issue 5, August 2005, Pages 296-301
Journal: Radiation Physics and Chemistry - Volume 73, Issue 5, August 2005, Pages 296-301
نویسندگان
S. Wate, N.K. Acharya, K.C. Bhahada, Y.K. Vijay, A. Tripathi, D.K. Avasthi, D. Das, S. Ghughre,