磁喷射系统用于沉积碳化薄膜,用于中子检测
Jingtao Zhu1, Yang Liu1,2, Hangyu Zhu1,2
1School of Physical and Engineering, Tongji University, Shanghai 200092, China.
The Review of scientific instruments
|September 6, 2023
概括
碳化物 (B4C) 薄膜作为中子转换层具有前景,为稀缺的-3 (3He) 探测器提供了可行的替代方案. 这些大面积B4C薄膜显示出良好的均性和中子检测效率.
科学领域:
- 材料科学 材料科学 材料科学
- 核工程 核工程是指核工程.
- 表面科学是一门学科.
背景情况:
- -3 (3He) 探测器对于中子探测至关重要,但面临供应短缺.
- 碳化物 (B4C) 被探索为一种替代的中子转换材料.
- 开发大面积,高质量的B4C电影对于实际应用至关重要.
研究的目的:
- 为了研究碳化物 (B4C) 薄膜作为中子转换层.
- 开发一个磁铁喷射系统,用于沉积大面积B4C薄膜.
- 描述B4C薄膜的性能和中子检测效率.
主要方法:
- 大面积的B4C薄膜 (1500 × 400 mm2) 使用磁铁喷射进行沉积.
- 描述包括原子力显微镜,扫描电子显微镜,X射线光电子谱学和中子辐射计量学.
- 在Al,SiO2和Si基板上沉积了附着层的B4C薄膜.
主要成果:
- 大面积的厚度不均小于±3%.
- 在低氧和的度下,B/C静态度比为5.18.
- 一个3微米的10B4C薄膜实现了对25 meV中子的中子检测效率为3.3 ± 0.3 ((sys) %.
结论:
- 碳化物 (B4C) 薄膜是用于中子检测的3He的有希望的替代品.
- 开发的喷涂工艺产生了统一的,高纯度的B4C薄膜.
- 实现的中子探测效率支持B4C在未来中子探测器中的潜力.
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