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    Rights statement: ©2017 American Physical Society.

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Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam

Research output: Contribution to Journal/Magazine › Journal article › peer-review

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Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam. / Warwick, J.; Dzelzainis, T.; Dieckmann, M. E. et al.
In: Physical review letters, Vol. 119, No. 18, 185002, 03.11.2017.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Warwick, J, Dzelzainis, T, Dieckmann, ME, Schumaker, W, Doria, D, Romagnani, L, Poder, K, Cole, JM, Alejo, A, Yeung, M, Krushelnick, K, Mangles, SPD, Najmudin, Z, Reville, B, Samarin, GM, Symes, DD, Thomas, AGR, Borghesi, M & Sarri, G 2017, 'Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam', Physical review letters, vol. 119, no. 18, 185002. https://doi.org/10.1103/PhysRevLett.119.185002

APA

Warwick, J., Dzelzainis, T., Dieckmann, M. E., Schumaker, W., Doria, D., Romagnani, L., Poder, K., Cole, J. M., Alejo, A., Yeung, M., Krushelnick, K., Mangles, S. P. D., Najmudin, Z., Reville, B., Samarin, G. M., Symes, D. D., Thomas, A. G. R., Borghesi, M., & Sarri, G. (2017). Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam. Physical review letters, 119(18), Article 185002. https://doi.org/10.1103/PhysRevLett.119.185002

Vancouver

Warwick J, Dzelzainis T, Dieckmann ME, Schumaker W, Doria D, Romagnani L et al. Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam. Physical review letters. 2017 Nov 3;119(18):185002. doi: 10.1103/PhysRevLett.119.185002

Author

Warwick, J. ; Dzelzainis, T. ; Dieckmann, M. E. et al. / Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam. In: Physical review letters. 2017 ; Vol. 119, No. 18.

Bibtex

@article{78e16d32c5574c309b7b366149ca3414,
title = "Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam",
abstract = "We report on the first experimental observation of a current-driven instability developing in a quasineutral matter-antimatter beam. Strong magnetic fields (>= 1 T) are measured, via means of a proton radiography technique, after the propagation of a neutral electron-positron beam through a background electron-ion plasma. The experimentally determined equipartition parameter of epsilon(B) approximate to 10(-3) is typical of values inferred from models of astrophysical gamma-ray bursts, in which the relativistic flows are also expected to be pair dominated. The data, supported by particle-in-cell simulations and simple analytical estimates, indicate that these magnetic fields persist in the background plasma for thousands of inverse plasma frequencies. The existence of such long-lived magnetic fields can be related to analog astrophysical systems, such as those prevalent in lepton-dominated jets.",
keywords = "GAMMA-RAY BURSTS, LASER-PLASMA INTERACTION, MAGNETIC-FIELDS, FIREBALL MODEL, SHOCKS, ACCELERATION, GENERATION, PARAMETERS, AFTERGLOW, ENERGY",
author = "J. Warwick and T. Dzelzainis and Dieckmann, {M. E.} and W. Schumaker and D. Doria and L. Romagnani and K. Poder and Cole, {J. M.} and A. Alejo and M. Yeung and K. Krushelnick and Mangles, {S. P. D.} and Z. Najmudin and B. Reville and Samarin, {G. M.} and Symes, {D. D.} and Thomas, {A. G. R.} and M. Borghesi and G. Sarri",
note = " {\textcopyright}2017 American Physical Society.",
year = "2017",
month = nov,
day = "3",
doi = "10.1103/PhysRevLett.119.185002",
language = "English",
volume = "119",
journal = "Physical review letters",
issn = "0031-9007",
publisher = "American Physical Society",
number = "18",

}

RIS

TY - JOUR

T1 - Experimental Observation of a Current-Driven Instability in a Neutral Electron-Positron Beam

AU - Warwick, J.

AU - Dzelzainis, T.

AU - Dieckmann, M. E.

AU - Schumaker, W.

AU - Doria, D.

AU - Romagnani, L.

AU - Poder, K.

AU - Cole, J. M.

AU - Alejo, A.

AU - Yeung, M.

AU - Krushelnick, K.

AU - Mangles, S. P. D.

AU - Najmudin, Z.

AU - Reville, B.

AU - Samarin, G. M.

AU - Symes, D. D.

AU - Thomas, A. G. R.

AU - Borghesi, M.

AU - Sarri, G.

N1 - ©2017 American Physical Society.

PY - 2017/11/3

Y1 - 2017/11/3

N2 - We report on the first experimental observation of a current-driven instability developing in a quasineutral matter-antimatter beam. Strong magnetic fields (>= 1 T) are measured, via means of a proton radiography technique, after the propagation of a neutral electron-positron beam through a background electron-ion plasma. The experimentally determined equipartition parameter of epsilon(B) approximate to 10(-3) is typical of values inferred from models of astrophysical gamma-ray bursts, in which the relativistic flows are also expected to be pair dominated. The data, supported by particle-in-cell simulations and simple analytical estimates, indicate that these magnetic fields persist in the background plasma for thousands of inverse plasma frequencies. The existence of such long-lived magnetic fields can be related to analog astrophysical systems, such as those prevalent in lepton-dominated jets.

AB - We report on the first experimental observation of a current-driven instability developing in a quasineutral matter-antimatter beam. Strong magnetic fields (>= 1 T) are measured, via means of a proton radiography technique, after the propagation of a neutral electron-positron beam through a background electron-ion plasma. The experimentally determined equipartition parameter of epsilon(B) approximate to 10(-3) is typical of values inferred from models of astrophysical gamma-ray bursts, in which the relativistic flows are also expected to be pair dominated. The data, supported by particle-in-cell simulations and simple analytical estimates, indicate that these magnetic fields persist in the background plasma for thousands of inverse plasma frequencies. The existence of such long-lived magnetic fields can be related to analog astrophysical systems, such as those prevalent in lepton-dominated jets.

KW - GAMMA-RAY BURSTS

KW - LASER-PLASMA INTERACTION

KW - MAGNETIC-FIELDS

KW - FIREBALL MODEL

KW - SHOCKS

KW - ACCELERATION

KW - GENERATION

KW - PARAMETERS

KW - AFTERGLOW

KW - ENERGY

U2 - 10.1103/PhysRevLett.119.185002

DO - 10.1103/PhysRevLett.119.185002

M3 - Journal article

VL - 119

JO - Physical review letters

JF - Physical review letters

SN - 0031-9007

IS - 18

M1 - 185002

ER -