Structural and optical properties of CR-39 polymer implanted with laser produced plasma ions of iron

被引：14

作者：

Butt, M. Z. ^{[1
]}

Ali, Dilawar ^{[2
]}

Najm-ul-Aarifeen ^{[3
]}

Naseem, S. ^{[4
]}

机构：

[1] Govt Coll Univ, Ctr Adv Studies Phys, Rafi M Chaudhri Chair, Lahore 54000, Pakistan

[2] Govt Coll Univ, Dept Phys, Lahore 54000, Pakistan

[3] Univ Engn & Technol, Dept Phys, Lahore 54890, Pakistan

[4] Univ Punjab, Ctr Excellence Solid State Phys, Lahore UNIV, Pakistan

来源：

PHYSICA B-CONDENSED MATTER | 2014年 / 454卷

关键词：

Nd:YAG laser; CR-39; polymer; Ion implantation; Optical properties; XRD; BAND-GAP; IRRADIATION; POLYCARBONATE;

D O I：

10.1016/j.physb.2014.07.071

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

A passive Q-switched Nd:YAG pulsed laser was used to irradiate 99.99% pure Fe target in vacuum similar to 10(-3) Torr. The CR-39 specimens were exposed to laser produced plasma ions (40-250 key) emitted along the normal to the Fe target surface. The flux of Fe ions was varied by varying the number of laser shots in the range 500-1500 with an increment of 250. A comparison of structural and optical properties of CR-39 polymer before and after ion implantation was made. The increase in ion flux leads to the transformation of polymer into rather more disordered amorphous slate leading to the broadening of XRD peaks. The crystallite size decreases (3.547 to 1.618 nm) and Urbach energy increases (0232 to 0.291 eV) exponentially with the increase in ion flux (0 to 6.07 x 10(5) ions/cm(2)). Indirect optical band gap is found to decrease (4.118 to 3.917 eV) linearly with the increase in ion flux (3.03 x 10(5) to 6.07 x 10(5) ions/cm(2)). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：179 / 183

页数：5

共 25 条

[1] Characterization of laser-produced plasma ions of various metals and their effect on the optical properties of the CR-39 polymer [J].