On the properties of synchrotron-like X-ray emission from laser wakefield accelerated electron beams
Abstract
The electric and magnetic fields responsible for electron acceleration in a Laser Wakefield Accelerator (LWFA) also cause electrons to radiate x-ray photons. Such x-ray pulses have several desirable properties including short duration and being well collimated with tunable high energy. We measure the scaling of this x-ray source experimentally up to laser powers greater than 100 TW. An increase in laser power allows electron trapping at a lower density as well as with an increased trapped charge. These effects ended in an x-ray fluence that was measured to increase non-linearly with laser power. The fluence of x-rays was also compared with that produced from K-α emission resulting from a solid target interaction for the same energy laser pulse. The flux was demonstrated to be comparable, but the LWFA x-rays had a significantly smaller source size. This indicates that such a source may be useful as a backlighter for probing high energy density plasmas with ultrafast temporal resolution.
- Authors:
-
[4];
[2];
[5];
[5];
[2];
[2]
- Univ. of Michigan, Ann Arbor, MI (United States); Univ. of California, San Diego, CA (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of Michigan, Ann Arbor, MI (United States); Osaka Univ. (Japan)
- Univ. of Michigan, Ann Arbor, MI (United States); Univ. of California, Irvine, CA (United States)
- Imperial College, London (United Kingdom)
- Publication Date:
- Research Org.:
- Univ. of Michigan, Ann Arbor, MI (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
- OSTI Identifier:
- 1540178
- Alternate Identifier(s):
- OSTI ID: 1431156
- Grant/Contract Number:
- NA0002372
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physics of Plasmas
- Additional Journal Information:
- Journal Volume: 25; Journal Issue: 4; Journal ID: ISSN 1070-664X
- Publisher:
- American Institute of Physics (AIP)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Citation Formats
McGuffey, C., Schumaker, W., Matsuoka, T., Chvykov, V., Dollar, F., Kalintchenko, G., Kneip, S., Najmudin, Z., Mangles, S. P. D., Vargas, M., Yanovsky, V., Maksimchuk, A., Thomas, A. G. R., and Krushelnick, K. On the properties of synchrotron-like X-ray emission from laser wakefield accelerated electron beams. United States: N. p., 2018.
Web. doi:10.1063/1.5024547.
McGuffey, C., Schumaker, W., Matsuoka, T., Chvykov, V., Dollar, F., Kalintchenko, G., Kneip, S., Najmudin, Z., Mangles, S. P. D., Vargas, M., Yanovsky, V., Maksimchuk, A., Thomas, A. G. R., & Krushelnick, K. On the properties of synchrotron-like X-ray emission from laser wakefield accelerated electron beams. United States. https://doi.org/10.1063/1.5024547
McGuffey, C., Schumaker, W., Matsuoka, T., Chvykov, V., Dollar, F., Kalintchenko, G., Kneip, S., Najmudin, Z., Mangles, S. P. D., Vargas, M., Yanovsky, V., Maksimchuk, A., Thomas, A. G. R., and Krushelnick, K. Tue .
"On the properties of synchrotron-like X-ray emission from laser wakefield accelerated electron beams". United States. https://doi.org/10.1063/1.5024547. https://www.osti.gov/servlets/purl/1540178.
@article{osti_1540178,
title = {On the properties of synchrotron-like X-ray emission from laser wakefield accelerated electron beams},
author = {McGuffey, C. and Schumaker, W. and Matsuoka, T. and Chvykov, V. and Dollar, F. and Kalintchenko, G. and Kneip, S. and Najmudin, Z. and Mangles, S. P. D. and Vargas, M. and Yanovsky, V. and Maksimchuk, A. and Thomas, A. G. R. and Krushelnick, K.},
abstractNote = {The electric and magnetic fields responsible for electron acceleration in a Laser Wakefield Accelerator (LWFA) also cause electrons to radiate x-ray photons. Such x-ray pulses have several desirable properties including short duration and being well collimated with tunable high energy. We measure the scaling of this x-ray source experimentally up to laser powers greater than 100 TW. An increase in laser power allows electron trapping at a lower density as well as with an increased trapped charge. These effects ended in an x-ray fluence that was measured to increase non-linearly with laser power. The fluence of x-rays was also compared with that produced from K-α emission resulting from a solid target interaction for the same energy laser pulse. The flux was demonstrated to be comparable, but the LWFA x-rays had a significantly smaller source size. This indicates that such a source may be useful as a backlighter for probing high energy density plasmas with ultrafast temporal resolution.},
doi = {10.1063/1.5024547},
journal = {Physics of Plasmas},
number = 4,
volume = 25,
place = {United States},
year = {Tue Apr 03 00:00:00 EDT 2018},
month = {Tue Apr 03 00:00:00 EDT 2018}
}
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Works referencing / citing this record:
Laser-wakefield accelerators for high-resolution X-ray imaging of complex microstructures
journal, March 2019
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