Gamma-rays from harmonically resonant betatron oscillations in a plasma wake

Silvia Cipiccia, Mohammad Islam, Bernhard Ersfeld, Richard Shanks, Enrico Brunetti, Gregory Vieux, Xue Yang, Riju Issac, Samuel Wiggins, Gregor Welsh, Maria Pia Anania, Dzmitry Maneuski, Rachel Montgomery, Gary Smith, Matthias Hoek, David J. Hamilton, Nuno R. C. Lemos, Dan Symes, Pattathil P. Rajeev, Val O. Shea & 2 others João M. Dias, Dino A. Jaroszynski

Research output: Contribution to journalLetter

170 Citations (Scopus)

Abstract

An intense laser pulse in a plasma can accelerate electrons1, 2, 3, 4 to GeV energies in centimetres5, 6, 7. Transverse betatron motion8, 9 in the plasma wake results in X-ray photons with an energy that depends on the electron energy, oscillation amplitude and frequency of the betatron motion10, 11, 12. Betatron X-rays from laser-accelerator electrons have hitherto been limited to spectra peaking between 1 and 10 keV (ref. 13). Here we show that the betatron amplitude is resonantly enhanced when electrons interact with the rear of the laser pulse14, 15. At high electron energy, resonance occurs when the laser frequency is a harmonic of the betatron frequency, leading to a significant increase in the photon energy. 108 gamma-ray photons, with spectra peaking between 20 and 150 keV, and a peak brilliance >1023 photons s−1 mrad−2 mm−2 per 0.1% bandwidth, are measured for 700 MeV beams, with 107 photons emitted between 1 and 7 MeV. Femtosecond duration gamma-rays may find uses in imaging, isotope production, probing dense matter, homeland security and nuclear physics16.
LanguageEnglish
Pages867-871
Number of pages5
JournalNature Physics
Volume7
DOIs
Publication statusPublished - 18 Sep 2011

Fingerprint

betatrons
wakes
gamma rays
oscillations
photons
lasers
electron accelerators
high energy electrons
energy
x rays
isotopes
electron energy
bandwidth
harmonics
pulses
electrons

Keywords

  • wakefield accelerators
  • betatron oscillations
  • plasma wakes

Cite this

Cipiccia, Silvia ; Islam, Mohammad ; Ersfeld, Bernhard ; Shanks, Richard ; Brunetti, Enrico ; Vieux, Gregory ; Yang, Xue ; Issac, Riju ; Wiggins, Samuel ; Welsh, Gregor ; Anania, Maria Pia ; Maneuski, Dzmitry ; Montgomery, Rachel ; Smith, Gary ; Hoek, Matthias ; Hamilton, David J. ; Lemos, Nuno R. C. ; Symes, Dan ; Rajeev, Pattathil P. ; Shea, Val O. ; Dias, João M. ; Jaroszynski, Dino A. / Gamma-rays from harmonically resonant betatron oscillations in a plasma wake. In: Nature Physics. 2011 ; Vol. 7. pp. 867-871.
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abstract = "An intense laser pulse in a plasma can accelerate electrons1, 2, 3, 4 to GeV energies in centimetres5, 6, 7. Transverse betatron motion8, 9 in the plasma wake results in X-ray photons with an energy that depends on the electron energy, oscillation amplitude and frequency of the betatron motion10, 11, 12. Betatron X-rays from laser-accelerator electrons have hitherto been limited to spectra peaking between 1 and 10 keV (ref. 13). Here we show that the betatron amplitude is resonantly enhanced when electrons interact with the rear of the laser pulse14, 15. At high electron energy, resonance occurs when the laser frequency is a harmonic of the betatron frequency, leading to a significant increase in the photon energy. 108 gamma-ray photons, with spectra peaking between 20 and 150 keV, and a peak brilliance >1023 photons s−1 mrad−2 mm−2 per 0.1{\%} bandwidth, are measured for 700 MeV beams, with 107 photons emitted between 1 and 7 MeV. Femtosecond duration gamma-rays may find uses in imaging, isotope production, probing dense matter, homeland security and nuclear physics16.",
keywords = "wakefield accelerators, betatron oscillations , plasma wakes",
author = "Silvia Cipiccia and Mohammad Islam and Bernhard Ersfeld and Richard Shanks and Enrico Brunetti and Gregory Vieux and Xue Yang and Riju Issac and Samuel Wiggins and Gregor Welsh and Anania, {Maria Pia} and Dzmitry Maneuski and Rachel Montgomery and Gary Smith and Matthias Hoek and Hamilton, {David J.} and Lemos, {Nuno R. C.} and Dan Symes and Rajeev, {Pattathil P.} and Shea, {Val O.} and Dias, {Jo{\~a}o M.} and Jaroszynski, {Dino A.}",
year = "2011",
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Cipiccia, S, Islam, M, Ersfeld, B, Shanks, R, Brunetti, E, Vieux, G, Yang, X, Issac, R, Wiggins, S, Welsh, G, Anania, MP, Maneuski, D, Montgomery, R, Smith, G, Hoek, M, Hamilton, DJ, Lemos, NRC, Symes, D, Rajeev, PP, Shea, VO, Dias, JM & Jaroszynski, DA 2011, 'Gamma-rays from harmonically resonant betatron oscillations in a plasma wake' Nature Physics, vol. 7, pp. 867-871. https://doi.org/10.1038/nphys2090

Gamma-rays from harmonically resonant betatron oscillations in a plasma wake. / Cipiccia, Silvia; Islam, Mohammad ; Ersfeld, Bernhard; Shanks, Richard; Brunetti, Enrico; Vieux, Gregory; Yang, Xue; Issac, Riju; Wiggins, Samuel; Welsh, Gregor; Anania, Maria Pia; Maneuski, Dzmitry; Montgomery, Rachel; Smith, Gary; Hoek, Matthias; Hamilton, David J.; Lemos, Nuno R. C.; Symes, Dan; Rajeev, Pattathil P.; Shea, Val O.; Dias, João M.; Jaroszynski, Dino A.

In: Nature Physics, Vol. 7, 18.09.2011, p. 867-871.

Research output: Contribution to journalLetter

TY - JOUR

T1 - Gamma-rays from harmonically resonant betatron oscillations in a plasma wake

AU - Cipiccia, Silvia

AU - Islam, Mohammad

AU - Ersfeld, Bernhard

AU - Shanks, Richard

AU - Brunetti, Enrico

AU - Vieux, Gregory

AU - Yang, Xue

AU - Issac, Riju

AU - Wiggins, Samuel

AU - Welsh, Gregor

AU - Anania, Maria Pia

AU - Maneuski, Dzmitry

AU - Montgomery, Rachel

AU - Smith, Gary

AU - Hoek, Matthias

AU - Hamilton, David J.

AU - Lemos, Nuno R. C.

AU - Symes, Dan

AU - Rajeev, Pattathil P.

AU - Shea, Val O.

AU - Dias, João M.

AU - Jaroszynski, Dino A.

PY - 2011/9/18

Y1 - 2011/9/18

N2 - An intense laser pulse in a plasma can accelerate electrons1, 2, 3, 4 to GeV energies in centimetres5, 6, 7. Transverse betatron motion8, 9 in the plasma wake results in X-ray photons with an energy that depends on the electron energy, oscillation amplitude and frequency of the betatron motion10, 11, 12. Betatron X-rays from laser-accelerator electrons have hitherto been limited to spectra peaking between 1 and 10 keV (ref. 13). Here we show that the betatron amplitude is resonantly enhanced when electrons interact with the rear of the laser pulse14, 15. At high electron energy, resonance occurs when the laser frequency is a harmonic of the betatron frequency, leading to a significant increase in the photon energy. 108 gamma-ray photons, with spectra peaking between 20 and 150 keV, and a peak brilliance >1023 photons s−1 mrad−2 mm−2 per 0.1% bandwidth, are measured for 700 MeV beams, with 107 photons emitted between 1 and 7 MeV. Femtosecond duration gamma-rays may find uses in imaging, isotope production, probing dense matter, homeland security and nuclear physics16.

AB - An intense laser pulse in a plasma can accelerate electrons1, 2, 3, 4 to GeV energies in centimetres5, 6, 7. Transverse betatron motion8, 9 in the plasma wake results in X-ray photons with an energy that depends on the electron energy, oscillation amplitude and frequency of the betatron motion10, 11, 12. Betatron X-rays from laser-accelerator electrons have hitherto been limited to spectra peaking between 1 and 10 keV (ref. 13). Here we show that the betatron amplitude is resonantly enhanced when electrons interact with the rear of the laser pulse14, 15. At high electron energy, resonance occurs when the laser frequency is a harmonic of the betatron frequency, leading to a significant increase in the photon energy. 108 gamma-ray photons, with spectra peaking between 20 and 150 keV, and a peak brilliance >1023 photons s−1 mrad−2 mm−2 per 0.1% bandwidth, are measured for 700 MeV beams, with 107 photons emitted between 1 and 7 MeV. Femtosecond duration gamma-rays may find uses in imaging, isotope production, probing dense matter, homeland security and nuclear physics16.

KW - wakefield accelerators

KW - betatron oscillations

KW - plasma wakes

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U2 - 10.1038/nphys2090

DO - 10.1038/nphys2090

M3 - Letter

VL - 7

SP - 867

EP - 871

JO - Nature Physics

T2 - Nature Physics

JF - Nature Physics

SN - 1745-2473

ER -