Elastic recoil and scattering yields measured in low energy heavy ion ERD

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 : 2024-10-29 DOI:10.1016/j.nimb.2024.165542

Mikko Kivekäs , Kenichiro Mizohata , Jaakko Julin , Markku Kainlauri , Mika Prunnila , Laura Keränen , Matti Putkonen , Tatu Korkiamäki , Mikko Laitinen

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引用次数: 0

Abstract

Experimental yields of low energy recoils and scattered beams in ToF-ERD have been measured and compared against theory. A significant discrepancy between Rutherford or Andersen cross-section predicted yield vs the experimental results is now demonstrated. Scale of the discrepancy is up to 50% compared to yields predicted by theory for low energy Au recoils. MCERD simulations were used to study the carbon foil scattering in the timing detectors to explain the observed discrepancy. Simulations indicate that a major part of the discrepancy occurs due to the scattering of low energy, heavy mass particles in the timing detector foils. The yield discrepancy can be narrowed down by taking into account the reduction of recoil yields caused by the carbon foil scattering. Further studies are in progress to study carbon foil scattering, aiming to further improve the quantitativity of ToF-ERD for the heavy elements.

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在低能重离子ERD中测量的弹性反冲和散射当量

我们测量了 ToF-ERD 中低能量反冲和散射光束的实验产率，并将其与理论进行了比较。现在已经证明，卢瑟福或安徒生横截面预测产率与实验结果之间存在重大差异。与理论预测的低能量金反冲产率相比，差距高达 50%。MCERD 模拟用于研究定时探测器中的碳箔散射，以解释观察到的差异。模拟结果表明，差异的主要部分是由于低能量、重质量粒子在定时探测器碳箔中的散射造成的。考虑到碳箔散射造成的反冲当量减少，可以缩小当量差异。目前正在进一步研究碳箔散射，目的是进一步提高 ToF-ERD 对重元素的定量性。

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.