تأثیر پرتو لیزر اگزایمر ArF بر روی پلی‌مر آلیل دی‌گلیکول کربنات

نوع مقاله: مقاله پژوهشی

نویسندگان

1 گروه فیزیک، دانشگاه بوعلی سینا، صندوق پستی: 65174، همدان ـ ایران

2 گروه فیزیک، دانشگاه آزاد اسلامی واحد همدان، کدپستی: 65181-15743، همدان ـ ایران

3 امور حفاظت در برابر اشعه‌ی کشور، سازمان انرژی اتمی، صندوق پستی: 1339-14155، تهران ـ ایران

چکیده

در این مقاله تأثیر پرتو فرابنفش لیزر اگزایمر ArF با طول موج 193 نانومتر بر روی پلی‌مر آلیل دی‌گلیکول کربنات (39CR-) بررسی شده است. ابتدا پلی‌مرها به سه دسته تقسیم شدند. دسته‌ی اول، زیر آستانه‌ی نورکندگی و دسته‌ی دوم، بالای آستانه‌ی نورکندگی، با تعداد تپ‌های متفاوت لیزر ArF پرتودهی شدند. دسته‌ی سوم ابتدا زیر آستانه‌ی نورکندگی با لیزر ArF و سپس با ذره‌های آلفای گسیلیده از Am241 پرتودهی و سپس به طور شیمیایی در محلول آبی سدیم هیدروکسید 25/6 مولار سونیده شدند. برای بررسی تغییر در ریخت‌شناسی سطح پلی‌مر، از میکروسکوپی الکترون پویشی (SEM) و برای تحلیل و بررسی ردپاهای ذره‌های آلفای ثبت شده در پلی‌مر آلیل دی‌گلیکول کربنات از میکروسکوپ نوری استفاده شد. نتیجه‌ها نشان داد که ساختارهای کرم‌مانند و تعدادی مخروط بر اثر پرتودهی لیزری روی سطح پلی‌مر ایجاد می‌شود. هم‌چنین مشاهده شد که قطر میانگین ردپاها کاهش می‌یابد. بنابراین لیزر باعث سخت شدن سطح آشکارساز می‌شود.
 

کلیدواژه‌ها


عنوان مقاله [English]

Effect of ArF excimer laser irradiation on allyldiglycol carbonate (CR-39) polymer

نویسندگان [English]

  • Babak Zhaleh 1
  • Ramin Fazlali 2
  • Atefeh Nasri 1
  • Mehran Taheri 3
چکیده [English]

In this paper, the effect of ArF excimer laser (193 nm) irradiation on CR-39 polymers was investigated. The polymers were divided into three sets. The first set of polymers was irradiated with ArF laser below the ablation threshold fluence and the second set was irradiated above the ablation threshold fluence with different number of pulses. The third set of polymers was irradiated with ArF laser (below the ablation threshold fluence) and then was exposed to alpha particles emitted from 241Am. After that, the samples were chemically etched in a 6.25 N NaOH solution. The morphology of the samples was investigated by a scanning electron microscope (SEM) and the registered tracks of alpha particles were investigated using an optical microscope. The results showed that worm-like structures and several cones were formed on the polymer surfaces due to laser irradiation and also the tracks diameter was decreased. So, the surface of the polymer was hardened due to irradiation.
 

کلیدواژه‌ها [English]

  • ArF excimer laser
  • CR-39 irradiation

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