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Title: Simultaneous generation of quasi-monoenergetic electron and betatron X-rays from nitrogen gas via ionization injection

Upon the interaction of 60 TW Ti: sapphire laser pulses with 4 mm long supersonic nitrogen gas jet, a directional x-ray emission was generated along with the generation of stable quasi-monoenergetic electron beams having a peak energy of 130 MeV and a relative energy spread of ∼ 20%. The betatron x-ray emission had a small divergence of 7.5 mrad and a critical energy of 4 keV. The laser wakefield acceleration process was stimulated in a background plasma density of merely 5.4 × 10{sup 17 }cm{sup −3} utilizing ionization injection. The non-self-focusing and stable propagation of the laser pulse in the pure nitrogen gaseous plasma should be responsible for the simultaneous generation of the high-quality X-ray and electron beams. Those ultra-short and naturally-synchronized beams could be applicable to ultrafast pump-probe experiments.
Authors:
; ; ; ; ; ;  [1] ;  [2] ;  [3] ; ; ; ;  [4]
  1. Beijing National Laboratory of Condensed Matter Physics, Institute of Physics, CAS, Beijing 100190 (China)
  2. Institute of High Energy Physics, CAS, Beijing 100049 (China)
  3. Institute of Fluid Physics, China Academy of Engineering Physics, Mianyang, 612900 Sichuan (China)
  4. Key Laboratory for Laser Plasmas (MOE) and Department of Physics and Astronomy, Shanghai Jiao Tong University, Shanghai 200240 (China)
Publication Date:
OSTI Identifier:
22392046
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 105; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAM INJECTION; BETATRONS; ELECTRON BEAMS; IONIZATION; LASERS; NITROGEN; PLASMA DENSITY; PULSES; SAPPHIRE; TITANIUM; X RADIATION