Dynamics of ionization-induced electron injection in the high density regime of laser wakefield acceleration

2014 ◽  
Vol 21 (12) ◽  
pp. 120703 ◽  
Author(s):  
F. G. Desforges ◽  
B. S. Paradkar ◽  
M. Hansson ◽  
J. Ju ◽  
L. Senje ◽  
...  
Keyword(s):  
Electron Injection ◽  
High Density ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Density Regime

scholarly journals High-Density Dynamics of Laser Wakefield Acceleration from Gas Plasmas to Nanotubes

Photonics ◽  
2021 ◽  
Vol 8 (6) ◽  
pp. 216
Author(s):  
Bradley Scott Nicks ◽  
Ernesto Barraza-Valdez ◽  
Sahel Hakimi ◽  
Kyle Chesnut ◽  
Genevieve DeGrandchamp ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Critical Density ◽  
High Density ◽  
Laser Wakefield Acceleration ◽  
Particle In Cell ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Sheath Formation ◽  
Laser Acceleration ◽  
Density Regime

The electron dynamics of laser wakefield acceleration (LWFA) is examined in the high-density regime using particle-in-cell simulations. These simulations model the electron source as a target of carbon nanotubes. Carbon nanotubes readily allow access to near-critical densities and may have other advantageous properties for potential medical applications of electron acceleration. In the near-critical density regime, electrons are accelerated by the ponderomotive force followed by the electron sheath formation, resulting in a flow of bulk electrons. This behavior represents a qualitatively distinct regime from that of low-density LWFA. A quantitative entropy index for differentiating these regimes is proposed. The dependence of accelerated electron energy on laser amplitude is also examined. For the majority of this study, the laser propagates along the axis of the target of carbon nanotubes in a 1D geometry. After the fundamental high-density physics is established, an alternative, 2D scheme of laser acceleration of electrons using carbon nanotubes is considered.

scholarly journals Controlled electron injection facilitated by nanoparticles for laser wakefield acceleration

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Myung Hoon Cho ◽  
Vishwa Bandhu Pathak ◽  
Hyung Taek Kim ◽  
Chang Hee Nam
Keyword(s):  
Electron Injection ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield

Dual effects of stochastic heating on electron injection in laser wakefield acceleration

2014 ◽  
Vol 21 (8) ◽  
pp. 083103 ◽  
Author(s):  
Z. G. Deng ◽  
L. Yang ◽  
C. T. Zhou ◽  
M. Y. Yu ◽  
H. P. Ying ◽  
...  
Keyword(s):  
Electron Injection ◽  
Laser Wakefield Acceleration ◽  
Stochastic Heating ◽  
Wakefield Acceleration ◽  
Laser Wakefield

Analysis of electron injection in laser wakefield acceleration using betatron emission in capillary tubes

2015 ◽  
Author(s):  
F. G. Desforges ◽  
B. S. Paradkar ◽  
M. Hansson ◽  
T. L. Audet ◽  
J. Ju ◽  
...  
Keyword(s):  
Electron Injection ◽  
Laser Wakefield Acceleration ◽  
Capillary Tubes ◽  
Wakefield Acceleration ◽  
Laser Wakefield

Laser-wakefield application to oncology

2019 ◽  
Vol 34 (34) ◽  
pp. 1943016
Author(s):  
B. S. Nicks ◽  
T. Tajima ◽  
D. Roa ◽  
A. Nečas ◽  
G. Mourou
Keyword(s):  
Critical Density ◽  
Low Energy ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield ◽  
Low Energy Electrons ◽  
Recent Developments ◽  
Sheath Formation ◽  
Low Energy Electron ◽  
Density Regime

Recent developments in fiber lasers and nanomaterials have allowed the possibility of using laser wakefield acceleration (LWFA) as the source of low-energy electron radiation for endoscopic and intraoperative brachytherapy, a technique in which sources of radiation for cancer treatment are brought directly to the affected tissues, avoiding collateral damage to intervening tissues. To this end, the electron dynamics of LWFA is examined in the high-density regime. In the near-critical density regime, electrons are accelerated by the ponderomotive force followed by an electron sheath formation, resulting in a flow of bulk electrons. These low-energy electrons penetrate tissue to depths typically less than 1 mm. First a typical resonant laser pulse is used, followed by lower-intensity, longer-pulse schemes, which are more amenable to a fiber-laser application.

Complete characterization of laser wakefield acceleration

2011 ◽  
Author(s):  
Laszlo Veisz ◽  
Alexander Buck ◽  
Maria Nicolai ◽  
Karl Schmid ◽  
Chris M. S. Sears ◽  
...  
Keyword(s):  
Complete Characterization ◽  
Laser Wakefield Acceleration ◽  
Wakefield Acceleration ◽  
Laser Wakefield
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