کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5376748 | 1504332 | 2006 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
External electric field effect on positronium formation in some polar and nonpolar polymers at different temperatures
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: External electric field effect on positronium formation in some polar and nonpolar polymers at different temperatures External electric field effect on positronium formation in some polar and nonpolar polymers at different temperatures](/preview/png/5376748.png)
چکیده انگلیسی
External electric field (⩽100 kV/cm) effect on positronium (Ps) formation in nonpolar and polar polymeric samples have been studied under different temperatures (â120 to 80 °C). Results indicate that there is completely no electric field effect on Ps formation in the studied polar samples. It was also observed that at room temperature, electric field effectively suppresses Ps formation probability in nonpolar polymers; however, at low temperature (below â60 °C for polyethylene), electric field effect is significantly weakened. It is concluded that electric field influences probability of electron-positron recombination with Ps formation in the spur outside of the positron blob. However, additional Ps formation on the trapped electrons at low temperatures, positron (electron) trapping by polar groups in polymers essentially inhibits electric field effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Physics - Volume 327, Issues 2â3, 11 September 2006, Pages 278-282
Journal: Chemical Physics - Volume 327, Issues 2â3, 11 September 2006, Pages 278-282
نویسندگان
R.S. Yu, Y. Ito, T. Suzuki, V. Shantarovich, K. Kondo,