Abstract
By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.
| Language | English |
|---|---|
| Article number | 115204 |
| Number of pages | 5 |
| Journal | Chinese Physics B |
| Volume | 26 |
| Issue number | 11 |
| Early online date | 29 Sep 2017 |
| DOIs | |
| Publication status | Published - 30 Nov 2017 |
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Keywords
- Laguerre-Gaussian pulse
- laser plasma accelerator
- particle-in-cell simulations
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Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse. / Shen, Zhong-Chen; Chen, Min; Zhang, Guo-Bo; Luo, Ji; Weng, Su-Ming; Yuan, Xiao-Hui; Liu, Feng; Sheng, Zheng-Ming.
In: Chinese Physics B, Vol. 26, No. 11, 115204, 30.11.2017.Research output: Contribution to journal › Article
TY - JOUR
T1 - Acceleration and radiation of externally injected electrons in laser plasma wakefield driven by a Laguerre-Gaussian pulse
AU - Shen, Zhong-Chen
AU - Chen, Min
AU - Zhang, Guo-Bo
AU - Luo, Ji
AU - Weng, Su-Ming
AU - Yuan, Xiao-Hui
AU - Liu, Feng
AU - Sheng, Zheng-Ming
PY - 2017/11/30
Y1 - 2017/11/30
N2 - By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.
AB - By using three-dimensional particle-in-cell simulations, externally injected electron beam acceleration and radiation in donut-like wake fields driven by a LaguerreGaussian pulse are investigated. Studies show that in the acceleration process the total charge and azimuthal momenta of electrons can be stably maintained at a distance of a few hundreds of micrometers. Electrons experience low-frequency spiral rotation and high-frequency betatron oscillation, which leads to a synchrotron-like radiation. The radiation spectrum is mainly determined by the betatron motion of electrons. The far field distribution of radiation intensity shows axial symmetry due to the uniform transverse injection and spiral rotation of electrons. Our studies suggest a new way to simultaneously generate hollow electron beam and radiation source from a compact laser plasma accelerator.
KW - Laguerre-Gaussian pulse
KW - laser plasma accelerator
KW - particle-in-cell simulations
UR - http://www.scopus.com/inward/record.url?scp=85033680794&partnerID=8YFLogxK
UR - http://iopscience.iop.org/journal/1674-1056
U2 - 10.1088/1674-1056/26/11/115204
DO - 10.1088/1674-1056/26/11/115204
M3 - Article
VL - 26
JO - Chinese Physics Letters
T2 - Chinese Physics Letters
JF - Chinese Physics Letters
SN - 0256-307X
IS - 11
M1 - 115204
ER -