Evaluation of water equivalent ratio (WER) values for polyethylene, polymethyl methacrylate, polystyrene, lead, tungsten and aluminum at helium ion energies ranging from 25-250 MeV/u through Monte Carlo simulation

Message:
Article Type:
Research/Original Article (دارای رتبه معتبر)
Abstract:
Background

There is no data concerning water equivalent ratio (WER) values for helium ion beams in an extensive range of energies as well as relevant dosimetric materials.

Materials and Methods

In this work, quantities related to depth-dose profiles and WER values were evaluated in water, Polyethylene (PE), Polymethyl Methacrylate (PMMA), Polystyrene (PS), Lead (Pb), Tungsten (W) and Aluminum (Al) for helium ion energies ranging from 25-250 MeV/u using MCNPX 2.4.0 Monte Carlo code.

Results

For all the studied energy range, the mean values of WER for PMMA, PE, PS, Pb, W and Al were 1.161, 0.995, 1.049, 5.421, 9.512 and 2.091, respectively. Among the studied materials, PE and W showed the least and most difference to water, respectively. Also the WER values of some of the studied materials for helium ion beams were compared with the same materials for proton beam.

Conclusion

The evaluated WER values were in acceptable accordance with the data reported in the literature by less than 2.6 % difference. Also, WER values of the mentioned materials for helium ions and protons have been compared and it was concluded that dose characteristics of PE are the most similar to water in the field of both helium ions and proton beams.

Language:
English
Published:
International Journal of Radiation Research, Volume:19 Issue: 3, Jul 2021
Pages:
661 to 668
https://magiran.com/p2297788  
دانلود و مطالعه متن این مقاله با یکی از روشهای زیر امکان پذیر است:
اشتراک شخصی
با عضویت و پرداخت آنلاین حق اشتراک یک‌ساله به مبلغ 1,390,000ريال می‌توانید 70 عنوان مطلب دانلود کنید!
اشتراک سازمانی
به کتابخانه دانشگاه یا محل کار خود پیشنهاد کنید تا اشتراک سازمانی این پایگاه را برای دسترسی نامحدود همه کاربران به متن مطالب تهیه نمایند!
توجه!
  • حق عضویت دریافتی صرف حمایت از نشریات عضو و نگهداری، تکمیل و توسعه مگیران می‌شود.
  • پرداخت حق اشتراک و دانلود مقالات اجازه بازنشر آن در سایر رسانه‌های چاپی و دیجیتال را به کاربر نمی‌دهد.
In order to view content subscription is required

Personal subscription
Subscribe magiran.com for 70 € euros via PayPal and download 70 articles during a year.
Organization subscription
Please contact us to subscribe your university or library for unlimited access!