Development of a facility for X-ray absorption fine-structure spectroscopy of radioactive samples at Indus-2 synchrotron radiation source, India

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 : 2025-09-09 DOI:10.1016/j.nimb.2025.165857

Sumit Kumar , Neetika Rawat , S.C. Parida , D. Bhattacharya , S. Jeyakumar , Rajashri Urkude , Ankur Agrawal , Biplab Ghosh , Tapas Ganguli , G. Haridas

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引用次数: 0

Abstract

We report on the development of an experimental facility dedicated to X-ray absorption fine-structure measurement of actinides and other α- and β- decaying non-sealed radioactive samples at Scanning EXAFS beamline (BL − 09), Indus-2 synchrotron source operated by Raja Ramanna Centre for Advance Technology, Indore. This facility is designed with the idea that samples remain confined in the event of failure of one or two of the containments and the accidental radiation exposure scenario do not happen. It employs an under-pressurized glove box with controlled ventilation scheme, air-filter and radiation monitoring in place. A detailed structural description of the facility, of allowed measurement geometry, permissible radionuclides’ limit and the radioprotection provisions of the facility are presented herein. The performance of the setup was tested with the room temperature Pu L₃ edge EXAFS measurement of Plutonium Sulphate (K₄Pu(SO₄)₄·2H₂O). The Pu-O bond distance obtained by fitting of the EXAFS data was found comparable to that obtained from the Rietveld refinement of the powder X-ray diffraction data of the salt. This facility provides elaborate safety and measurement capability for radioactive samples to synchrotron-based EXAFS users and aims to aid in the fundamental and applied research of actinides and other long-lived alpha and beta active radioisotopes.

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印度Indus-2同步加速器辐射源放射性样品x射线吸收精细结构光谱学设施的开发

本文报道了在印度Raja Ramanna先进技术中心运行的Indus-2同步加速器上，在扫描EXAFS光束线（BL - 09）上，开发了用于锕系元素和其他α-和β-衰变非密封放射性样品的x射线吸收精细结构测量的实验设备。该设施的设计理念是，在一个或两个容器失效的情况下，样品仍然被限制，并且不会发生意外辐射暴露的情况。它采用了一个低压手套箱，控制通风方案，空气过滤器和辐射监测到位。本文详细介绍了该设施的结构、允许的测量几何形状、允许的放射性核素限量和该设施的辐射防护规定。采用室温Pu L3边缘EXAFS对硫酸钚（K4Pu(SO4)4·2H2O）进行了性能测试。通过对EXAFS数据的拟合得到的Pu-O键距离与盐的粉末x射线衍射数据的Rietveld细化得到的结果相当。该设施为基于同步加速器的EXAFS用户提供了放射性样品的详细安全性和测量能力，旨在帮助锕系元素和其他长寿命的α和β活性放射性同位素的基础和应用研究。

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.