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Observation of Synchrotron Radiation from Electrons Accelerated in a Petawatt-Laser-Generated Plasma Cavity
Abstract
The dynamics of plasma electrons in the focus of a petawatt laser beam are studied via measurements of their x-ray synchrotron radiation. With increasing laser intensity, a forward directed beam of x rays extending to 50 keV is observed. The measured x rays are well described in the synchrotron asymptotic limit of electrons oscillating in a plasma channel. The critical energy of the measured synchrotron spectrum is found to scale as the Maxwellian temperature of the simultaneously measured electron spectra. At low laser intensity transverse oscillations are negligible as the electrons are predominantly accelerated axially by the laser generated wakefield. At high laser intensity, electrons are directly accelerated by the laser and enter a highly radiative regime with up to 5% of their energy converted into x rays.
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Citations
Cites
Monoenergetic beams of relativistic electrons from intense laser–plasma interactions
Mangles, S. P. D., Murphy, C. D., Najmudin, Z., Thomas, A. G. R., Collier, J. L., Dangor, A. E., Divall, E. J., Foster, P. S., Gallacher, J. G., Hooker, C. J., et al. (2004) · Nature · doi:10.1038/nature02939 · Cited by 1,977
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Bright spatially coherent synchrotron X-rays from a table-top source
Kneip, S., McGuffey, C., Martins, J. L., Martins, S. F., Bellei, C., Chvykov, V., Dollar, F., Fonseca, R., Huntington, C., Kalintchenko, G., et al. (2010) · Nature Physics · doi:10.1038/nphys1789 · Cited by 451
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Metadata
- Authors
- Kneip, S., Nagel, S. R., Bellei, C., Bourgeois, N., Dangor, A. E., Gopal, A., Heathcote, R., Mangles, S. P. D., Marquès, J. R., Maksimchuk, A., Nilson, P. M., Phuoc, K. T., Reed, S., Tzoufras, M., Tsung, F. S., Willingale, L., Mori, W. B., Rousse, A., Krushelnick, K., & Najmudin, Z.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-03-14
- Volume
- 100
- Issue
- 10
- Pages
- 105006-105006
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1995645299
- Cited by
- 215
- References
- 1
- FWCI
- 8.73
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kneip, S., Nagel, S. R., Bellei, C., Bourgeois, N., Dangor, A. E., Gopal, A., Heathcote, R., Mangles, S. P. D., Marquès, J. R., Maksimchuk, A., Nilson, P. M., Phuoc, K. T., Reed, S., Tzoufras, M., Tsung, F. S., Willingale, L., Mori, W. B., Rousse, A., Krushelnick, K., & Najmudin, Z. (2008). Observation of Synchrotron Radiation from Electrons Accelerated in a Petawatt-Laser-Generated Plasma Cavity. Physical Review Letters. https://doi.org/10.1103/physrevlett.100.105006
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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