Parametric scans of HB and LS-RPA regimes employing Petawatt laser

S. Kar, K. F. Kakolee, B. Qiao, D. Doria, B. Ramakrishna, G. Sarri, K. Quinn, M. Zepf, X. Yuan, P. McKenna, M. Cerchez, J. Osterlholz, O. Willi, A. MacChi, M. Borghesi

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

By contrast to the Target Normal Sheath acceleration (TNSA) mechanism [1], Radiation Pressure Acceleration (RPA) is currently attracting a substantial amount of experimental [2,3] and theoretical [4-6] attention worldwide due to its superior scaling in terms of ion energy and laser-ion conversion efficiency. Employing Vulcan Petawatt lasers of the Rutherford Appleton Laboratory, UK, both the Hole-boring (HB) and the Light-Sail (LS) regimes of the RPA have been extensively explored. When the target thickness is of the order of hole-boring velocity times the laser pulse duration, highly collimated plasma jets of near solid density are ejected from the foil, lasting up to ns after the laser interaction. By changing the linear polarisation of the laser to circular, improved homogeneity in the jet's spatial density profile is achieved which suggests more uniform and sustained radiation pressure drive on target ions. By decreasing the target areal density or increasing irradiance on the target, the LS regime of the RPA is accessed where relatively high flux (~ 1012 particles/MeV/Sr) of ions are accelerated to ~ 10 MeV/nucleon energies in a narrow energy bandwidth. The ion energy scaling obtained from the parametric scans agrees well with theoretical estimation based on RPA mechanism and the narrow bandwidth feature in the ion spectra is studied by 2D particle-in-simulations.

LanguageEnglish
Title of host publication38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts
Place of PublicationMulhouse, France
Number of pages4
Volume35G
Publication statusPublished - 1 Dec 2011
Event38th EPS Conference on Plasma Physics 2011, EPS 2011 - Strasbourg, France
Duration: 27 Jun 20111 Jul 2011

Conference

Conference38th EPS Conference on Plasma Physics 2011, EPS 2011
CountryFrance
CityStrasbourg
Period27/06/111/07/11

Fingerprint

illuminance
radiation pressure
lasers
ions
bandwidth
scaling
target thickness
energy
flux (rate)
linear polarization
sheaths
irradiance
plasma jets
homogeneity
foils
pulse duration
profiles
simulation

Keywords

  • Radiation Pressure Acceleration (RPA)
  • ion energy
  • laser-ion conversion
  • Vulcan Petawatt laser system

Cite this

Kar, S., Kakolee, K. F., Qiao, B., Doria, D., Ramakrishna, B., Sarri, G., ... Borghesi, M. (2011). Parametric scans of HB and LS-RPA regimes employing Petawatt laser. In 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts (Vol. 35G). [O4.211] Mulhouse, France.
Kar, S. ; Kakolee, K. F. ; Qiao, B. ; Doria, D. ; Ramakrishna, B. ; Sarri, G. ; Quinn, K. ; Zepf, M. ; Yuan, X. ; McKenna, P. ; Cerchez, M. ; Osterlholz, J. ; Willi, O. ; MacChi, A. ; Borghesi, M. / Parametric scans of HB and LS-RPA regimes employing Petawatt laser. 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts. Vol. 35G Mulhouse, France, 2011.
@inproceedings{4b0d26aeb5d14ed6b3ee9c7001102d0a,
title = "Parametric scans of HB and LS-RPA regimes employing Petawatt laser",
abstract = "By contrast to the Target Normal Sheath acceleration (TNSA) mechanism [1], Radiation Pressure Acceleration (RPA) is currently attracting a substantial amount of experimental [2,3] and theoretical [4-6] attention worldwide due to its superior scaling in terms of ion energy and laser-ion conversion efficiency. Employing Vulcan Petawatt lasers of the Rutherford Appleton Laboratory, UK, both the Hole-boring (HB) and the Light-Sail (LS) regimes of the RPA have been extensively explored. When the target thickness is of the order of hole-boring velocity times the laser pulse duration, highly collimated plasma jets of near solid density are ejected from the foil, lasting up to ns after the laser interaction. By changing the linear polarisation of the laser to circular, improved homogeneity in the jet's spatial density profile is achieved which suggests more uniform and sustained radiation pressure drive on target ions. By decreasing the target areal density or increasing irradiance on the target, the LS regime of the RPA is accessed where relatively high flux (~ 1012 particles/MeV/Sr) of ions are accelerated to ~ 10 MeV/nucleon energies in a narrow energy bandwidth. The ion energy scaling obtained from the parametric scans agrees well with theoretical estimation based on RPA mechanism and the narrow bandwidth feature in the ion spectra is studied by 2D particle-in-simulations.",
keywords = "Radiation Pressure Acceleration (RPA), ion energy, laser-ion conversion, Vulcan Petawatt laser system",
author = "S. Kar and Kakolee, {K. F.} and B. Qiao and D. Doria and B. Ramakrishna and G. Sarri and K. Quinn and M. Zepf and X. Yuan and P. McKenna and M. Cerchez and J. Osterlholz and O. Willi and A. MacChi and M. Borghesi",
year = "2011",
month = "12",
day = "1",
language = "English",
isbn = "2914771681",
volume = "35G",
booktitle = "38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts",

}

Kar, S, Kakolee, KF, Qiao, B, Doria, D, Ramakrishna, B, Sarri, G, Quinn, K, Zepf, M, Yuan, X, McKenna, P, Cerchez, M, Osterlholz, J, Willi, O, MacChi, A & Borghesi, M 2011, Parametric scans of HB and LS-RPA regimes employing Petawatt laser. in 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts. vol. 35G, O4.211, Mulhouse, France, 38th EPS Conference on Plasma Physics 2011, EPS 2011, Strasbourg, France, 27/06/11.

Parametric scans of HB and LS-RPA regimes employing Petawatt laser. / Kar, S.; Kakolee, K. F.; Qiao, B.; Doria, D.; Ramakrishna, B.; Sarri, G.; Quinn, K.; Zepf, M.; Yuan, X.; McKenna, P.; Cerchez, M.; Osterlholz, J.; Willi, O.; MacChi, A.; Borghesi, M.

38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts. Vol. 35G Mulhouse, France, 2011. O4.211.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

TY - GEN

T1 - Parametric scans of HB and LS-RPA regimes employing Petawatt laser

AU - Kar, S.

AU - Kakolee, K. F.

AU - Qiao, B.

AU - Doria, D.

AU - Ramakrishna, B.

AU - Sarri, G.

AU - Quinn, K.

AU - Zepf, M.

AU - Yuan, X.

AU - McKenna, P.

AU - Cerchez, M.

AU - Osterlholz, J.

AU - Willi, O.

AU - MacChi, A.

AU - Borghesi, M.

PY - 2011/12/1

Y1 - 2011/12/1

N2 - By contrast to the Target Normal Sheath acceleration (TNSA) mechanism [1], Radiation Pressure Acceleration (RPA) is currently attracting a substantial amount of experimental [2,3] and theoretical [4-6] attention worldwide due to its superior scaling in terms of ion energy and laser-ion conversion efficiency. Employing Vulcan Petawatt lasers of the Rutherford Appleton Laboratory, UK, both the Hole-boring (HB) and the Light-Sail (LS) regimes of the RPA have been extensively explored. When the target thickness is of the order of hole-boring velocity times the laser pulse duration, highly collimated plasma jets of near solid density are ejected from the foil, lasting up to ns after the laser interaction. By changing the linear polarisation of the laser to circular, improved homogeneity in the jet's spatial density profile is achieved which suggests more uniform and sustained radiation pressure drive on target ions. By decreasing the target areal density or increasing irradiance on the target, the LS regime of the RPA is accessed where relatively high flux (~ 1012 particles/MeV/Sr) of ions are accelerated to ~ 10 MeV/nucleon energies in a narrow energy bandwidth. The ion energy scaling obtained from the parametric scans agrees well with theoretical estimation based on RPA mechanism and the narrow bandwidth feature in the ion spectra is studied by 2D particle-in-simulations.

AB - By contrast to the Target Normal Sheath acceleration (TNSA) mechanism [1], Radiation Pressure Acceleration (RPA) is currently attracting a substantial amount of experimental [2,3] and theoretical [4-6] attention worldwide due to its superior scaling in terms of ion energy and laser-ion conversion efficiency. Employing Vulcan Petawatt lasers of the Rutherford Appleton Laboratory, UK, both the Hole-boring (HB) and the Light-Sail (LS) regimes of the RPA have been extensively explored. When the target thickness is of the order of hole-boring velocity times the laser pulse duration, highly collimated plasma jets of near solid density are ejected from the foil, lasting up to ns after the laser interaction. By changing the linear polarisation of the laser to circular, improved homogeneity in the jet's spatial density profile is achieved which suggests more uniform and sustained radiation pressure drive on target ions. By decreasing the target areal density or increasing irradiance on the target, the LS regime of the RPA is accessed where relatively high flux (~ 1012 particles/MeV/Sr) of ions are accelerated to ~ 10 MeV/nucleon energies in a narrow energy bandwidth. The ion energy scaling obtained from the parametric scans agrees well with theoretical estimation based on RPA mechanism and the narrow bandwidth feature in the ion spectra is studied by 2D particle-in-simulations.

KW - Radiation Pressure Acceleration (RPA)

KW - ion energy

KW - laser-ion conversion

KW - Vulcan Petawatt laser system

UR - http://ocs.ciemat.es/EPS2011PAP/html/

M3 - Conference contribution book

SN - 2914771681

VL - 35G

BT - 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts

CY - Mulhouse, France

ER -

Kar S, Kakolee KF, Qiao B, Doria D, Ramakrishna B, Sarri G et al. Parametric scans of HB and LS-RPA regimes employing Petawatt laser. In 38th EPS Conference on Plasma Physics 2011, EPS 2011 - Europhysics Conference Abstracts. Vol. 35G. Mulhouse, France. 2011. O4.211