Vacuum ultraviolet coherent undulator radiation from attosecond electron bunches.

Vacuum ultraviolet coherent undulator radiation from attosecond electron bunches.
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DOI:
10.1038/s41598-021-93640-8
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发表时间:
2021-07-16
期刊:
影响因子:
4.6
通讯作者:
Jaroszynski DA
Jaroszynski DA
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Brunetti E;van der Geer B;de Loos M;Dewhurst KA;Kornaszewski A;Maitrallain A;Muratori BD;Owen HL;Wiggins SM;Jaroszynski DA

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Attosecond duration relativistic electron bunches travelling through an undulator can generate brilliant coherent radiation in the visible to vacuum ultraviolet spectral range. We present comprehensive numerical simulations to study the properties of coherent emission for a wide range of electron energies and bunch durations, including space-charge effects. These demonstrate that electron bunches with r.m.s. duration of 50 as, nominal charge of 0.1 pC and energy range of 100–250 MeV produce coherent photons per pulse in the 100–600 nm wavelength range. We show that this can be enhanced substantially by self-compressing negatively chirped 100 pC bunches in the undulator to produce coherent photons with pulse duration of 0.5–3 fs.
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