skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen

Abstract

A laser wakefield acceleration (LWFA) experiment is performed using 30 TW, 30 fs, and 800 nm laser pulses, focused onto pure nitrogen plasma having relatively low densities in the range of 0.8×10{sup 18} cm{sup −3} to 2.7×10{sup 18} cm{sup −3}. Electron beams having a low divergence of ∼3  mrad (full-width at half-maximum) and quasi-monoenergetic peak energies of ∼105  MeV are achieved over 4-mm interaction length. The total electron beam charge reached to 2 nC, however, only 1%–2% of this (tens of pC) had energies >35 MeV. We tried different conditions to optimize the electron beam acceleration; our experiment verifies that lower nitrogen plasma densities are generating electron beams with high quality in terms of divergence, charge, pointing stability, and maximum energy. In addition, if LWFA is to be widely used as a basis for compact particle accelerators in the future, therefore, from the economic and safety points of view we propose the use of nitrogen gas rather than helium or hydrogen.

Authors:
 [1];  [2]; ; ; ; ; ; ; ; ;  [1];  [3]
  1. Key Laboratory for Laser Plasmas (MOE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
  2. (China)
  3. Bejing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 (China)
Publication Date:
OSTI Identifier:
22304098
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 7; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; ACCELERATION; ACCELERATORS; ELECTRON BEAMS; HELIUM; LASERS; MEV RANGE 100-1000; NITROGEN; PLASMA DENSITY

Citation Formats

Tao, Mengze, Bejing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, Hafz, Nasr A. M., E-mail: nasr@sjtu.edu.cn, Li, Song, Mirzaie, Mohammad, Elsied, Ahmed M. M., Ge, Xulei, Liu, Feng, Sokollik, Thomas, Sheng, Zhengming, Zhang, Jie, E-mail: jzhang1@sjtu.edu.cn, and Chen, Liming. Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen. United States: N. p., 2014. Web. doi:10.1063/1.4889877.
Tao, Mengze, Bejing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, Hafz, Nasr A. M., E-mail: nasr@sjtu.edu.cn, Li, Song, Mirzaie, Mohammad, Elsied, Ahmed M. M., Ge, Xulei, Liu, Feng, Sokollik, Thomas, Sheng, Zhengming, Zhang, Jie, E-mail: jzhang1@sjtu.edu.cn, & Chen, Liming. Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen. United States. doi:10.1063/1.4889877.
Tao, Mengze, Bejing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, Hafz, Nasr A. M., E-mail: nasr@sjtu.edu.cn, Li, Song, Mirzaie, Mohammad, Elsied, Ahmed M. M., Ge, Xulei, Liu, Feng, Sokollik, Thomas, Sheng, Zhengming, Zhang, Jie, E-mail: jzhang1@sjtu.edu.cn, and Chen, Liming. Tue . "Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen". United States. doi:10.1063/1.4889877.
@article{osti_22304098,
title = {Quasimonoenergetic collimated electron beams from a laser wakefield acceleration in low density pure nitrogen},
author = {Tao, Mengze and Bejing National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190 and Hafz, Nasr A. M., E-mail: nasr@sjtu.edu.cn and Li, Song and Mirzaie, Mohammad and Elsied, Ahmed M. M. and Ge, Xulei and Liu, Feng and Sokollik, Thomas and Sheng, Zhengming and Zhang, Jie, E-mail: jzhang1@sjtu.edu.cn and Chen, Liming},
abstractNote = {A laser wakefield acceleration (LWFA) experiment is performed using 30 TW, 30 fs, and 800 nm laser pulses, focused onto pure nitrogen plasma having relatively low densities in the range of 0.8×10{sup 18} cm{sup −3} to 2.7×10{sup 18} cm{sup −3}. Electron beams having a low divergence of ∼3  mrad (full-width at half-maximum) and quasi-monoenergetic peak energies of ∼105  MeV are achieved over 4-mm interaction length. The total electron beam charge reached to 2 nC, however, only 1%–2% of this (tens of pC) had energies >35 MeV. We tried different conditions to optimize the electron beam acceleration; our experiment verifies that lower nitrogen plasma densities are generating electron beams with high quality in terms of divergence, charge, pointing stability, and maximum energy. In addition, if LWFA is to be widely used as a basis for compact particle accelerators in the future, therefore, from the economic and safety points of view we propose the use of nitrogen gas rather than helium or hydrogen.},
doi = {10.1063/1.4889877},
journal = {Physics of Plasmas},
number = 7,
volume = 21,
place = {United States},
year = {Tue Jul 15 00:00:00 EDT 2014},
month = {Tue Jul 15 00:00:00 EDT 2014}
}