Center for Strategic Studies, China Academy of Engineering Physics, Beijing, 100088, China.
Center for Strategic Studies, China Academy of Engineering Physics, Beijing, 100088, China.
Appl Radiat Isot. 2021 May;171:109648. doi: 10.1016/j.apradiso.2021.109648. Epub 2021 Feb 18.
Authentication of the explosives in nuclear warheads is a key point for the global nuclear disarmament. In this paper, a detection method of the explosives in nuclear warheads based on API-TOF (associated α particle imaging - time of flight) is proposed. First, the basic principles and current research situation of API-TOF are introduced. Second, a numerical simulation platform of the detection method of the explosives in nuclear warheads based on API-TOF was established, and a numerical simulation study of the feasibility of this method was carried out. The research results show that, this method can detect the nuclides of C, N and O of the explosive in the nuclear warhead in 15 min, and reconstruct the carbon-oxygen number ratio and nitrogen-oxygen number ratio of the explosive accurately, and reconstruct the spatial distribution of the explosive nuclei with the explosive profile clearly discriminated in the reconstruction image. From the simulation results, the detection method of the explosive in the nuclear warhead based on API-TOF is confirmed.
核弹头中爆炸物的鉴定是全球核裁军的关键点。本文提出了一种基于 API-TOF（伴随α粒子成像-飞行时间）的核弹头中爆炸物检测方法。首先，介绍了 API-TOF 的基本原理和当前研究状况。其次，建立了基于 API-TOF 的核弹头中爆炸物检测方法的数值模拟平台，并对该方法的可行性进行了数值模拟研究。研究结果表明，该方法可以在 15 分钟内检测到核弹头中爆炸物的 C、N 和 O 核素，并准确重建爆炸物的碳氧比和氮氧比，在重建图像中清晰地区分爆炸物核素的空间分布。从模拟结果来看，基于 API-TOF 的核弹头中爆炸物检测方法得到了验证。
