Incident Positron Energy (keV) Incident Positron Energy (keV) Incident Positron Energy (keV) 2.41十 6 23 456 2.6 26 34 5 6 2.41 2 24- 2.2 22 2.2 2 2 2 c 1.8 (c) 18 20 18 20 8 17 6 6 16 266 o0uaus。0aat0oC9 (bi 12 b 10 0.53 05 0.525 0.52 052 aasasa 0.52 0.51 0.515 a 051 0.5 a 0.51 0 200 4006008001000 2004006008001000 0 2004006008001000 Mean Positron Implantation Depth(nm) Mean Positron Implantation Depth (nm) Mean Positron Implantation Depth (nm) Polyetlrylene(PE) Carbon-implanted Gamma-irradiated(30kGy)PE (5*1014i01cm2)PE PDF文件使用"pdfFactory”试用版本创建ww.fineprint.cnPDF 文件使用 "pdfFactory" 试用版本创建 `www.fineprint.cn `