A new graphitization setup for radiocarbon dating using accelerator mass spectrometer at Physical Research Laboratory Ahmedabad

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 : 2025-04-09 DOI:10.1016/j.nimb.2025.165698

Amzad Hussain Laskar , Pratheeksha Nayak , Aishwarya Singh , Rahul Kumar Agrawal , Ranjan Kumar Mohanty , Manan S. Shah , M.G. Yadava

{"title":"A new graphitization setup for radiocarbon dating using accelerator mass spectrometer at Physical Research Laboratory Ahmedabad","authors":"Amzad Hussain Laskar , Pratheeksha Nayak , Aishwarya Singh , Rahul Kumar Agrawal , Ranjan Kumar Mohanty , Manan S. Shah , M.G. Yadava","doi":"10.1016/j.nimb.2025.165698","DOIUrl":null,"url":null,"abstract":"<div><div>A new vacuum system for radiocarbon (<sup>14</sup>C) dating has been developed at the Physical Research Laboratory (PRL), Ahmedabad. This system uses zinc as a reducing agent and iron powder as a catalyst to convert CO<sub>2</sub> into graphite, which is then analyzed using Accelerator Mass Spectrometry (AMS) for measuring <sup>14</sup>C content. The system efficiently processes CO<sub>2</sub> from wide range of samples including organic material, carbonates and water. In this paper, we discuss the details of the setup, graphite reduction efficiency, background activity, and measurements of oxalic acid standards alongside <sup>14</sup>C determinations from known international standards. Additionally, the paper outlines the data reduction process for AMS and the procedure for reporting radiocarbon content with uncertainties. The system can handle five samples at a time, with CO<sub>2</sub> reduction efficiency ranging from 50 to 100%. Multiple <sup>14</sup>C age measurements from 12 international standards highlight the system’s precision and reliability.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165698"},"PeriodicalIF":1.4000,"publicationDate":"2025-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0168583X25000886","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"INSTRUMENTS & INSTRUMENTATION","Score":null,"Total":0}

引用次数: 0

Abstract

A new vacuum system for radiocarbon (¹⁴C) dating has been developed at the Physical Research Laboratory (PRL), Ahmedabad. This system uses zinc as a reducing agent and iron powder as a catalyst to convert CO₂ into graphite, which is then analyzed using Accelerator Mass Spectrometry (AMS) for measuring ¹⁴C content. The system efficiently processes CO₂ from wide range of samples including organic material, carbonates and water. In this paper, we discuss the details of the setup, graphite reduction efficiency, background activity, and measurements of oxalic acid standards alongside ¹⁴C determinations from known international standards. Additionally, the paper outlines the data reduction process for AMS and the procedure for reporting radiocarbon content with uncertainties. The system can handle five samples at a time, with CO₂ reduction efficiency ranging from 50 to 100%. Multiple ¹⁴C age measurements from 12 international standards highlight the system’s precision and reliability.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

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.