197Au ion irradiated modification in CR-39 by positron annihilation

被引：0
|
作者：
Kumar, R
Mahur, AK
Dwivedi, KK
Das, D
Prasad, R [1 ]
机构：
[1] Aligarh Muslim Univ, Dept Appl Phys, ZH Coll Engn & Technol, Aligarh 202002, Uttar Pradesh, India
[2] Arunachal Univ, Arunachal Pradesh 791111, India
[3] Interuniv Consortium, DAE Facil, Kolkata Ctr, Kolkata 700091, W Bengal, India
来源：
INDIAN JOURNAL OF PHYSICS AND PROCEEDINGS OF THE INDIAN ASSOCIATION FOR THE CULTIVATION OF SCIENCE-PART A | 2004年 / 78A卷 / 02期
关键词：
CR-39; polycarbonate; Au ion irradiation; positron lifetime; ion beam modification;
D O I：
暂无
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
CR-39 is a polycarbonate widely used as SSNTD for recording nuclear charged particles and in other applications. Latent ion tracks produced in the polymers due to the damage produced by the passage of Swift Heavy Ions contain amorphous material with highest degree of disorder, changing the free volume properties which have strong correlation with the macroscopic properties of the material. Positron Annihilation Lifetime Spectroscopy (PALS) provides direct information about the dimension, content and hole size distribution of free volume in polymers. The effect of irradiation of Au-197 (13.5 MeV/n) ions on CR-39 polycarbonate by Positron Annihilation Lifetime Spectroscopy (PALS) is reported here. PALS provides a non-destructive and non-interfering probe, having high detection efficiency for free volume hole properties. PAL measurement shows 8.9% increase in free volume size.
引用
收藏
页码：225 / 227
页数：3
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