Enhancement of laser-driven betatron x-rays by a density-depressed plasma structure

B. Guo; Z. Cheng; S. Liu; X. N. Ning; J. Zhang; C. H. Pai; J. F. Hua; H. H. Chu; J. Wang; W. Lu

doi:10.1088/1361-6587/aaf613

Enhancement of laser-driven betatron x-rays by a density-depressed plasma structure

B. Guo, Z. Cheng, S. Liu, X. N. Ning, J. Zhang, C. H. Pai, J. F. Hua, H. H. Chu, J. Wang, W. Lu

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

We report a significant enhancement of betatron radiation from a laser wakefield accelerator (LWFA) by inserting a density-depressed plasma structure. By using a technique of transverse laser machining, a longitudinally density-depressed plasma structure with tunable length and position has been fabricated to increase the betatron amplitude of the electron beam in the LWFA, leading to an enhanced photon number and critical energy of the betatron x-ray beam. By adjusting the length and position of the plasma density depression region, the photon number of the betatron x-ray is enhanced by a factor of 3, and the critical energy is enhanced by a factor of 1.4.

Original language	English
Article number	035003
Journal	Plasma Physics and Controlled Fusion
Volume	61
Issue number	3
DOIs	https://doi.org/10.1088/1361-6587/aaf613
State	Published - 10 Jan 2019

Keywords

betatron radiation
laser plasma accelerator
particle-in-cell simulations
plasma machining

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10.1088/1361-6587/aaf613

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title = "Enhancement of laser-driven betatron x-rays by a density-depressed plasma structure",

abstract = "We report a significant enhancement of betatron radiation from a laser wakefield accelerator (LWFA) by inserting a density-depressed plasma structure. By using a technique of transverse laser machining, a longitudinally density-depressed plasma structure with tunable length and position has been fabricated to increase the betatron amplitude of the electron beam in the LWFA, leading to an enhanced photon number and critical energy of the betatron x-ray beam. By adjusting the length and position of the plasma density depression region, the photon number of the betatron x-ray is enhanced by a factor of 3, and the critical energy is enhanced by a factor of 1.4.",

keywords = "betatron radiation, laser plasma accelerator, particle-in-cell simulations, plasma machining",

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T1 - Enhancement of laser-driven betatron x-rays by a density-depressed plasma structure

AU - Guo, B.

AU - Cheng, Z.

AU - Liu, S.

AU - Ning, X. N.

AU - Zhang, J.

AU - Pai, C. H.

AU - Hua, J. F.

AU - Chu, H. H.

AU - Wang, J.

AU - Lu, W.

PY - 2019/1/10

Y1 - 2019/1/10

N2 - We report a significant enhancement of betatron radiation from a laser wakefield accelerator (LWFA) by inserting a density-depressed plasma structure. By using a technique of transverse laser machining, a longitudinally density-depressed plasma structure with tunable length and position has been fabricated to increase the betatron amplitude of the electron beam in the LWFA, leading to an enhanced photon number and critical energy of the betatron x-ray beam. By adjusting the length and position of the plasma density depression region, the photon number of the betatron x-ray is enhanced by a factor of 3, and the critical energy is enhanced by a factor of 1.4.

AB - We report a significant enhancement of betatron radiation from a laser wakefield accelerator (LWFA) by inserting a density-depressed plasma structure. By using a technique of transverse laser machining, a longitudinally density-depressed plasma structure with tunable length and position has been fabricated to increase the betatron amplitude of the electron beam in the LWFA, leading to an enhanced photon number and critical energy of the betatron x-ray beam. By adjusting the length and position of the plasma density depression region, the photon number of the betatron x-ray is enhanced by a factor of 3, and the critical energy is enhanced by a factor of 1.4.

KW - betatron radiation

KW - laser plasma accelerator

KW - particle-in-cell simulations

KW - plasma machining

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U2 - 10.1088/1361-6587/aaf613

DO - 10.1088/1361-6587/aaf613

M3 - 期刊論文

AN - SCOPUS:85062460929

SN - 0741-3335

VL - 61

JO - Plasma Physics and Controlled Fusion

JF - Plasma Physics and Controlled Fusion

IS - 3

M1 - 035003

ER -

Enhancement of laser-driven betatron x-rays by a density-depressed plasma structure

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