基于微波加热低功函数颗粒材料的无铯负离子源的概念

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2025-09-16 DOI:10.1016/j.nimb.2025.165863

Akihiro Matsubara , Yoko Saito-Kokubu , Kazuhisa Nishio , Kenji Kimura , Keiichiro Kashimura , Koji Shimada , Natsuko Fujita

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引用次数: 0

摘要

在加速器质谱（AMS）系统中使用的大多数负离子源是铯溅射类型。然而，铯是高度反应性的，它的安全处理可能会带来困难，特别是对没有经验的用户。为了扩大AMS的适用性和提高操作安全性，需要具有高电离效率、增强安全性和易于维护的离子源。我们提出了一种基于微波加热低功函数无害颗粒材料的高效无铯负离子源的新概念。基于这一概念，我们构建了一个测试系统，并报告了初步的实验结果，证明了负离子的产生。

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Concept for a Cesium-Free negative ion source based on microwave heating of a low work function granular material

Most negative ion sources used in Accelerator Mass Spectrometry (AMS) systems are cesium sputter types. However, cesium is highly reactive, and its safe handling can pose difficulties, particularly for inexperienced users. To broaden the applicability of AMS and improve operational safety, ion sources with high ionization efficiency, enhanced safety, and ease of maintenance are required. We propose a novel concept for a high efficiency cesium-free negative ion source based on microwave heating of non-hazardous granular materials with low work functions. A test system was constructed based on this concept, and we report initial experimental results demonstrating negative ion production.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.