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However, it is still a great challenge to stably produce such electron beams with lasers, since the typical subfemtosecond electron bunches from laser-plasma interactions either carry low beam charge, or propagate for only several tens of femtoseconds. Here we propose an all-optical scheme for generating dense attosecond electron bunches via the interaction of an intense Laguerre-Gaussian (LG) laser pulse with a nanofiber. The dense bunch train results from the unique field structure of a circularly polarized LG laser pulse, enabling each bunch to be phase-locked and accelerated forward with low divergence, high beam charge and large beam-angular-momentum. This paves the way for wide applications in various fields, e.g., ultrabrilliant attosecond x\/\u03b3-ray emission.<\/jats:p>","DOI":"10.1038\/s41598-018-25421-9","type":"journal-article","created":{"date-parts":[[2018,5,2]],"date-time":"2018-05-02T15:14:08Z","timestamp":1525274048000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":56,"title":["Attosecond electron bunches from a nanofiber driven by Laguerre-Gaussian laser pulses"],"prefix":"10.1038","volume":"8","author":[{"given":"Li-Xiang","family":"Hu","sequence":"first","affiliation":[]},{"given":"Tong-Pu","family":"Yu","sequence":"additional","affiliation":[]},{"given":"Zheng-Ming","family":"Sheng","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5515-3624","authenticated-orcid":false,"given":"Jorge","family":"Vieira","sequence":"additional","affiliation":[]},{"given":"De-Bin","family":"Zou","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-4969-0714","authenticated-orcid":false,"given":"Yan","family":"Yin","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8061-7091","authenticated-orcid":false,"given":"Paul","family":"McKenna","sequence":"additional","affiliation":[]},{"given":"Fu-Qiu","family":"Shao","sequence":"additional","affiliation":[]}],"member":"297","published-online":{"date-parts":[[2018,5,8]]},"reference":[{"key":"25421_CR1","doi-asserted-by":"publisher","first-page":"309","DOI":"10.1103\/RevModPhys.78.309","volume":"78","author":"GA Mourou","year":"2006","unstructured":"Mourou, G. 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