基于加速器的BNCT中子场角度和能量差中子谱测量新方法的初步研究

IF 1.6 3区工程技术 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Applied Radiation and Isotopes Pub Date : 2025-04-11 DOI:10.1016/j.apradiso.2025.111836

S. Tamaki, S. Kusaka, F. Sato, I. Murata

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引用次数: 0

摘要

硼中子俘获疗法（BNCT）是一种利用中子照射的有效癌症治疗方法；有必要尽可能准确地评估治疗中子场的特性，以尽量减少对患者的不必要剂量。为了解决这一问题，我们目前正在考虑一种从角度和能量两方面测量双微分中子谱（DDNS）的新方法。本研究为该系统设计了一种新型光谱仪，并通过数值模拟进行了可行性研究。结果表明，该方法在角度小于30°的情况下是有效的。然而，当角度大于45°时，评估光谱与真实光谱存在差异。这些结果表明，当前系统对入射到光谱仪侧面的中子表现出过度的敏感性，需要改进设计。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Preliminary study on a new neutron spectrum measurement method for the angle and energy differential neutron field for accelerator based BNCT

Boron neutron capture therapy (BNCT) is an effective cancer treatment that utilizes neutron irradiation; it is necessary to evaluate the characteristics of the therapeutic neutron field as accurately as possible to minimize the unwanted dose to patients. As an approach to this issue, we are currently considering a new method to measure the double-differential neutron spectrum (DDNS) in terms of both angle and energy.

In this study, a new spectrometer for this system was designed, and feasibility studies were conducted using numerical simulations. As a result, the validity of this method was confirmed at angles less than 30°. However, the evaluated spectra differed from the true spectrum at angles greater than 45°. These results imply that the current system exhibits excessive sensitivity to neutrons incident on the side surface of the spectrometer, necessitating design improvements.

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来源期刊

Applied Radiation and Isotopes 工程技术-核科学技术

CiteScore

3.00

自引率

12.50%

发文量

406

审稿时长

13.5 months

期刊介绍： Applied Radiation and Isotopes provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and peaceful application of nuclear, radiation and radionuclide techniques in chemistry, physics, biochemistry, biology, medicine, security, engineering and in the earth, planetary and environmental sciences, all including dosimetry. Nuclear techniques are defined in the broadest sense and both experimental and theoretical papers are welcome. They include the development and use of α- and β-particles, X-rays and γ-rays, neutrons and other nuclear particles and radiations from all sources, including radionuclides, synchrotron sources, cyclotrons and reactors and from the natural environment. The journal aims to publish papers with significance to an international audience, containing substantial novelty and scientific impact. The Editors reserve the rights to reject, with or without external review, papers that do not meet these criteria. Papers dealing with radiation processing, i.e., where radiation is used to bring about a biological, chemical or physical change in a material, should be directed to our sister journal Radiation Physics and Chemistry.