J. Hussain , L.D. Yu , I. Ahmad , T. Ali , S. Ullah , M. Shahid , U. Tippawan
{"title":"MeV Cq+离子诱导厚Cu和Au靶的x射线产生截面","authors":"J. Hussain , L.D. Yu , I. Ahmad , T. Ali , S. Ullah , M. Shahid , U. Tippawan","doi":"10.1016/j.nimb.2025.165687","DOIUrl":null,"url":null,"abstract":"<div><div>This study measured K-, L-, and M-shell X-ray production cross sections (XPCSs) of thick Cu and Au targets induced by 1 MeV to 22 MeV multiple-charge-state C-ions as a function of ion energy and charge state, compared with using He-ions. XPCS measurements were based on the Merzbacher-Lewis relation. X-ray energy shifts and peak broadening were observed in materials irradiated by heavy C-ions, demonstrating that multiple ionization (MI) processes are at play for C-ions but not for He-ions. While the experimental XPCSs induced by He-ions aligned with predictions of theoretical models and did not exhibit charge state dependence, the XPCSs induced by C-ions exhibited more complex patterns, depending on ion energy and incident charge state. The complexity of the ion charge state effect was extended to the equilibrium charge state (ECS) in the thick target formalism. Theoretical models modified with MI and ECS exhibited improved predictions of the measured data.</div></div>","PeriodicalId":19380,"journal":{"name":"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms","volume":"563 ","pages":"Article 165687"},"PeriodicalIF":1.4000,"publicationDate":"2025-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"X-ray production cross sections of thick Cu and Au targets induced by MeV Cq+ ions\",\"authors\":\"J. Hussain , L.D. Yu , I. Ahmad , T. Ali , S. Ullah , M. Shahid , U. Tippawan\",\"doi\":\"10.1016/j.nimb.2025.165687\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>This study measured K-, L-, and M-shell X-ray production cross sections (XPCSs) of thick Cu and Au targets induced by 1 MeV to 22 MeV multiple-charge-state C-ions as a function of ion energy and charge state, compared with using He-ions. XPCS measurements were based on the Merzbacher-Lewis relation. X-ray energy shifts and peak broadening were observed in materials irradiated by heavy C-ions, demonstrating that multiple ionization (MI) processes are at play for C-ions but not for He-ions. While the experimental XPCSs induced by He-ions aligned with predictions of theoretical models and did not exhibit charge state dependence, the XPCSs induced by C-ions exhibited more complex patterns, depending on ion energy and incident charge state. The complexity of the ion charge state effect was extended to the equilibrium charge state (ECS) in the thick target formalism. Theoretical models modified with MI and ECS exhibited improved predictions of the measured data.</div></div>\",\"PeriodicalId\":19380,\"journal\":{\"name\":\"Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms\",\"volume\":\"563 \",\"pages\":\"Article 165687\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2025-03-28\",\"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/S0168583X25000771\",\"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}","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/S0168583X25000771","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}
X-ray production cross sections of thick Cu and Au targets induced by MeV Cq+ ions
This study measured K-, L-, and M-shell X-ray production cross sections (XPCSs) of thick Cu and Au targets induced by 1 MeV to 22 MeV multiple-charge-state C-ions as a function of ion energy and charge state, compared with using He-ions. XPCS measurements were based on the Merzbacher-Lewis relation. X-ray energy shifts and peak broadening were observed in materials irradiated by heavy C-ions, demonstrating that multiple ionization (MI) processes are at play for C-ions but not for He-ions. While the experimental XPCSs induced by He-ions aligned with predictions of theoretical models and did not exhibit charge state dependence, the XPCSs induced by C-ions exhibited more complex patterns, depending on ion energy and incident charge state. The complexity of the ion charge state effect was extended to the equilibrium charge state (ECS) in the thick target formalism. Theoretical models modified with MI and ECS exhibited improved predictions of the measured data.
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.