从氦气和碳离子相互作用与水相互作用的目标碎片计算的蒙特卡洛计算
Monte Carlo calculations of target fragments from helium and carbon ion interactions with water
影响因子:4.20000
分区:医学4区 / 核医学4区
发表日期:2024 Oct 10
作者:
Quazi Muhammad Rashed Nizam, Asif Ahmed, Iftekhar Ahmed, Lembit Sihver
摘要
当高能量重离子与任何目标相互作用时，会产生高线性能量转移（LET）目标片段。在重离子癌治疗期间，以及宇宙辐射与宇航员相互作用时，这些目标碎片（TFS）可以给健康组织的显着剂量。本文使用粒子和重离子传输代码系统（PHIT）介绍了蒙特卡洛模拟，以表征氦气和碳离子与水的反应中的目标碎片。提出了计算出的范围，莱特，剂量和生产横截面。结果表明，当碳和氦离子与水碰撞时，质子，杜特子，triton，3he，6he，6he，氮，氧气和氟离子是最可能的目标片段。在产生的靶片段中，α颗粒和氮离子给靶标提供了最高的剂量，因为在产生的片段中，这些TFS的结合和让我们的TF的结合最高。当氦气和碳离子撞击水上时，质子和氧的生产横截面是目标碎片中最高的，因为与其他片段相比，这些TF可以通过更多的反应通道产生。这些发现有助于在重离子癌症治疗和屏蔽空间辐射期间的准确剂量测量。
Abstract
When high energetic heavy ions interact with any target, short range, high linear energy transfer (LET) target fragments are produced. These target fragments (TFs) can give a significant dose to the healthy tissue during heavy ion cancer therapy, and when cosmic radiation interacts with astronauts. This paper presents Monte Carlo simulations, using the Particle and Heavy Ion Transport code System (PHITS), to characterize target fragments from reactions of helium and carbon ions with water. The calculated ranges, LET, doses, and production cross sections are presented. It is shown that protons, deuterons, tritons, alpha particles, 3He, 6He, nitrogen, oxygen, and fluorine ions are the most probable target fragments when carbon and helium ions collide with water. Among the produced target fragments, alpha particles and nitrogen ions give the highest dose to the targets, since the combination of fluence and LETs of these TFs are highest among the produced fragments. The production cross sections of proton and oxygen are the highest among the target fragments cross sections when helium and carbon ions imping on water, because these TFs can be produced through more reaction channels compared to other fragments. These findings are helpful for accurate dose measurement during heavy ion cancer therapy and for shielding of space radiation.