Giant collimated gamma-ray flashes

被引：56
作者：
Benedetti, Alberto [1 ]
Tamburini, Matteo [1 ]
Keitel, Christoph H. [1 ]
机构：
[1] Max Planck Inst Kernphys, Heidelberg, Germany
来源：
NATURE PHOTONICS | 2018年 / 12卷 / 06期
关键词：
RELATIVISTIC ELECTRON-BEAMS; FILAMENTATION INSTABILITY; PAIR PRODUCTION; BREMSSTRAHLUNG; PLASMA; EVOLUTION;
D O I：
10.1038/s41566-018-0139-y
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Bright sources of high-energy electromagnetic radiation are widely employed in fundamental research, industry and medicine(1,2). This motivated the construction of Compton-based facilities planned to yield bright gamma-ray pulses with energies up to(3) 20 MeV. Here, we demonstrate a novel mechanism based on the strongly amplified synchrotron emission that occurs when a sufficiently dense ultra-relativistic electron beam interacts with a millimetre-thickness conductor. For electron beam densities exceeding approximately 3 x 101(9) cm(-3), electromagnetic instabilities occur, and the ultra-relativistic electrons travel through self-generated electromagnetic fields as large as 10(7)-10(8) gauss. This results in the production of a collimated gamma-ray pulse with peak brilliance above 10(25) photons s(-1) mrad(-2) mm(-2) per 0.1% bandwidth, photon energies ranging from 200 keV to gigaelectron-volts and up to 60% electron-to-photon energy conversion efficiency. These findings pave the way to compact, high-repetition-rate (kilohertz) sources of short (less than or similar to 30 fs), collimated (milliradian) and high-flux (> 10(12) photons s(-1)) gamma-ray pulses.
引用
收藏
页码：319 / +
页数：7
相关论文
共 43 条
  • [1] [Anonymous], 2012, Classical electrodynamics
  • [2] Contemporary particle-in-cell approach to laser-plasma modelling
    Arber, T. D.
    Bennett, K.
    Brady, C. S.
    Lawrence-Douglas, A.
    Ramsay, M. G.
    Sircombe, N. J.
    Gillies, P.
    Evans, R. G.
    Schmitz, H.
    Bell, A. R.
    Ridgers, C. P.
    [J]. PLASMA PHYSICS AND CONTROLLED FUSION, 2015, 57 (11)
  • [3] ASKARYAN GA, 1995, PLASMA PHYS REP, V21, P835
  • [4] Baier V N., 1998, Electromagnetic Processes at High Energies in Oriented Single Crystals
  • [5] MOLIERE THEORY OF MULTIPLE SCATTERING
    BETHE, HA
    [J]. PHYSICAL REVIEW, 1953, 89 (06): : 1256 - 1266
  • [6] Review of third and next generation synchrotron light sources
    Bilderback, DH
    Elleaume, P
    Weckert, E
    [J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS, 2005, 38 (09) : S773 - S797
  • [7] Stabilization of the filamentation instability and the anisotropy of the background plasma
    Bret, A
    Deutsch, C
    [J]. PHYSICS OF PLASMAS, 2006, 13 (02)
  • [8] Electromagnetic instabilities for relativistic beam-plasma interaction in whole k space:: Nonrelativistic beam and plasma temperature effects -: art. no. 016403
    Bret, A
    Firpo, MC
    Deutsch, C
    [J]. PHYSICAL REVIEW E, 2005, 72 (01):
  • [9] Characterization of the initial filamentation of a relativistic electron beam passing through a plasma
    Bret, A
    Firpo, MC
    Deutsch, C
    [J]. PHYSICAL REVIEW LETTERS, 2005, 94 (11) : 1 - 4
  • [10] Three-dimensional magnetic structures generated by the development of the filamentation (Weibel) instability in the relativistic regime
    Califano, F
    Del Sarto, D
    Pegoraro, F
    [J]. PHYSICAL REVIEW LETTERS, 2006, 96 (10)
12345