{"title":"Stopping of very heavy ions in Mylar","authors":"R.N. Sagaidak","doi":"10.1016/j.nimb.2024.165554","DOIUrl":null,"url":null,"abstract":"<div><div>Available experimental data on Mylar stopping powers (<span><math><mrow><mi>S</mi><mi>P</mi></mrow></math></span>s) for heavy ions (HIs) at energies <span><math><mrow><mn>0</mn><mo>.</mo><mn>04</mn><mo>⩽</mo><mi>E</mi><mo>/</mo><mi>A</mi><mo>⩽</mo><mn>15</mn></mrow></math></span> MeV/nucleon have been compared to different semi-empirical model calculations with the aim of probing their possible usage for the estimates of ranges for very heavy ions at <span><math><mrow><mi>E</mi><mo>/</mo><mi>A</mi><mo><</mo><mn>0</mn><mo>.</mo><mn>5</mn></mrow></math></span> MeV/nucleon, which are of practical interest. Significant deviations from the calculated <span><math><mrow><mi>S</mi><mi>P</mi></mrow></math></span> values were found for fission fragments and lighter HIs at <span><math><mrow><mi>E</mi><mo>/</mo><mi>A</mi><mo><</mo><mn>1</mn></mrow></math></span> MeV/nucleon. A new model parameterization for Mylar <span><math><mrow><mi>S</mi><mi>P</mi></mrow></math></span> has been proposed. Range estimates obtained with any <span><math><mrow><mi>S</mi><mi>P</mi></mrow></math></span> model calculation show a critical dependence of their mean values on the approximated electronic stopping powers and the nuclear (collisional) <span><math><mrow><mi>S</mi><mi>P</mi></mrow></math></span> component. The last plays a crucial role at the end of the range and could only be obtained by calculations. Practical applicability of the results of investigation for very heavy evaporation residues (products of complete fusion reactions induced by HIs) implies the use of a thick catcher foil corresponding to the largest ranges derived in the estimates or the range measurements for these products.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"557 ","pages":"Article 165554"},"PeriodicalIF":1.4000,"publicationDate":"2024-11-02","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/S0168583X24003240","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
Available experimental data on Mylar stopping powers (s) for heavy ions (HIs) at energies MeV/nucleon have been compared to different semi-empirical model calculations with the aim of probing their possible usage for the estimates of ranges for very heavy ions at MeV/nucleon, which are of practical interest. Significant deviations from the calculated values were found for fission fragments and lighter HIs at MeV/nucleon. A new model parameterization for Mylar has been proposed. Range estimates obtained with any model calculation show a critical dependence of their mean values on the approximated electronic stopping powers and the nuclear (collisional) component. The last plays a crucial role at the end of the range and could only be obtained by calculations. Practical applicability of the results of investigation for very heavy evaporation residues (products of complete fusion reactions induced by HIs) implies the use of a thick catcher foil corresponding to the largest ranges derived in the estimates or the range measurements for these products.
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.