Development of irradiation-resistant nitride targets for the measurement of 14N(p,γ)15O

IF 1.5 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 : 2026-04-01 Epub Date: 2026-02-04 DOI:10.1016/j.nimb.2026.166039

Shen Lin , Xin Chen , Jun Su , Liyong Zhang , Jianjun He , Bin Liao , Yangping Shen , Size Chen , Dan Xiao , Yong Zhang , Lin Chen , Menglin Qiu , Chi Xu , Shilun Jin , Fei Lu , Luohuan Wang , Zhilin Shen , Xinyue Li , Ziming Li , Hao Zhang , Junwen Tian

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引用次数: 0

Abstract

The ¹⁴N

{(p, γ)}^{15}

O reaction plays a crucial role in studies of hydrogen burning. Irradiation-resistant nitride targets are essential for extending direct measurements of this reaction to lower energies. In this work, we fabricated nitride targets using filter cathodic vacuum arc (FCVA) and low-pressure chemical vapor deposition (LPCVD) techniques. The thickness and chemical composition of the targets, as well as the impurity levels of the TiN targets, were evaluated through corresponding reaction measurements. The results indicate that FCVA-fabricated TiN targets exhibit the best comprehensive performance. The deterioration of the TiN targets under the bombardment of a

\sim

2

mA proton beam was investigated by monitoring the yield curves. The reduction rates of the atomic areal density for these targets were found to be in the range of 0.084–0.16%/C. The prepared TiN targets successfully advanced the measurement of ¹⁴N

{(p, γ)}^{15}

O reaction to

E_{p} = 110

keV in a ground laboratory, which will enable further extension to

E_{p} = 70

keV at the Jinping Underground Nuclear Astrophysics facility (JUNA) in the future.

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14N(p,γ)15O耐辐照氮化靶的研制

14N(p,γ)15O反应在氢燃烧研究中起着至关重要的作用。抗辐照氮化物靶对于将该反应的直接测量扩展到较低能量是必不可少的。在这项工作中，我们使用过滤阴极真空电弧（FCVA）和低压化学气相沉积（LPCVD）技术制备氮化靶。通过相应的反应测量来评估靶材的厚度和化学成分，以及TiN靶材的杂质水平。结果表明，fcva法制备的TiN靶材综合性能最好。通过监测产率曲线，研究了TiN靶在~ 2 mA质子束轰击下的劣化。原子面密度的还原速率在0.084 ~ 0.16%/C之间。

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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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.