{"title":"激光辐照平行金纳米棒引导纳米粒子加速","authors":"M. Yadav, Ajay Kumar, Subhayan Mandal","doi":"10.1088/2516-1067/ac3fa3","DOIUrl":null,"url":null,"abstract":"Laser irradiated parallel gold nanorods with interspersed deuterium nanoparticles are shown to offer guided acceleration of nanoparticles. The laser pulse of intensity exceeding 1018 W cm−2 at 1 μm wavelength and pulse duration ∼30 fs causes full ionization of nanoparticles and high state ionization of gold atoms and pushes out the free electrons via the ponderomotive force. The charged nanorods have an electric field that has transverse component towards the axis of symmetry and axial field outwards. Thus the nanoparticles are accelerated axially while confined transversely. Deuterium beam of a few MeV energy can be produced by this technique.","PeriodicalId":36295,"journal":{"name":"Plasma Research Express","volume":null,"pages":null},"PeriodicalIF":1.3000,"publicationDate":"2021-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":"{\"title\":\"Guided acceleration of nanoparticles by laser irradiated parallel gold nanorods\",\"authors\":\"M. Yadav, Ajay Kumar, Subhayan Mandal\",\"doi\":\"10.1088/2516-1067/ac3fa3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Laser irradiated parallel gold nanorods with interspersed deuterium nanoparticles are shown to offer guided acceleration of nanoparticles. The laser pulse of intensity exceeding 1018 W cm−2 at 1 μm wavelength and pulse duration ∼30 fs causes full ionization of nanoparticles and high state ionization of gold atoms and pushes out the free electrons via the ponderomotive force. The charged nanorods have an electric field that has transverse component towards the axis of symmetry and axial field outwards. Thus the nanoparticles are accelerated axially while confined transversely. Deuterium beam of a few MeV energy can be produced by this technique.\",\"PeriodicalId\":36295,\"journal\":{\"name\":\"Plasma Research Express\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":1.3000,\"publicationDate\":\"2021-12-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"1\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plasma Research Express\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1088/2516-1067/ac3fa3\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ORTHOPEDICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Research Express","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1088/2516-1067/ac3fa3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ORTHOPEDICS","Score":null,"Total":0}
引用次数: 1
摘要
用激光照射平行金纳米棒并点缀氘纳米颗粒,可以提供纳米颗粒的引导加速。波长为1 μm、脉冲持续时间为~ 30 fs、强度超过1018 W cm−2的激光脉冲使纳米粒子完全电离,金原子高态电离,并通过质动势将自由电子推出。带电纳米棒具有一个电场,该电场具有向对称轴方向的横向分量和向外的轴向分量。因此,纳米粒子被轴向加速,而被横向限制。利用该技术可以产生几兆电子伏能量的氘束。
Guided acceleration of nanoparticles by laser irradiated parallel gold nanorods
Laser irradiated parallel gold nanorods with interspersed deuterium nanoparticles are shown to offer guided acceleration of nanoparticles. The laser pulse of intensity exceeding 1018 W cm−2 at 1 μm wavelength and pulse duration ∼30 fs causes full ionization of nanoparticles and high state ionization of gold atoms and pushes out the free electrons via the ponderomotive force. The charged nanorods have an electric field that has transverse component towards the axis of symmetry and axial field outwards. Thus the nanoparticles are accelerated axially while confined transversely. Deuterium beam of a few MeV energy can be produced by this technique.