Effects of laser prepulse on proton generation

D. Batani, R. Jafer, R. Redaelli, R. Dezulian, O. Lundh, F. Lindau, A. Persson, K. Osvay, C.-G. Wahlstrom, D. C. Carroll, P. McKenna, A. Flacco, V. Malka, M. Veltcheva

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration)

Several effects are associated to the prepulse and are discussed in this contribution:

i) Destruction of thin foil targets by the shock generated by the laser prepulse

ii) Creation of preplasma on target front side affecting laser absorption

iii) Deformation of target rear side

iv) Whole displacement of thin foil targets affecting focusing condition

In particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy.

The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved.

Fingerprint

Protons
protons
Lasers
lasers
Metal foil
foils
deviation
aeroservoelasticity
Proton beams
proton energy
proton beams
sheaths
Shock waves
high power lasers
destruction
shock waves
Laser pulses
shock
Irradiation
irradiation

Keywords

  • proton generation
  • shock
  • laser absorption
  • prepulse
  • high-pressure phase diagram
  • acceleration

Cite this

Batani, D. ; Jafer, R. ; Redaelli, R. ; Dezulian, R. ; Lundh, O. ; Lindau, F. ; Persson, A. ; Osvay, K. ; Wahlstrom, C.-G. ; Carroll, D. C. ; McKenna, P. ; Flacco, A. ; Malka, V. ; Veltcheva, M. / Effects of laser prepulse on proton generation. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2010 ; Vol. 620, No. 1. pp. 76-82.
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abstract = "Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration)Several effects are associated to the prepulse and are discussed in this contribution:i) Destruction of thin foil targets by the shock generated by the laser prepulseii) Creation of preplasma on target front side affecting laser absorptioniii) Deformation of target rear sideiv) Whole displacement of thin foil targets affecting focusing conditionIn particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy.The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved.",
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author = "D. Batani and R. Jafer and R. Redaelli and R. Dezulian and O. Lundh and F. Lindau and A. Persson and K. Osvay and C.-G. Wahlstrom and Carroll, {D. C.} and P. McKenna and A. Flacco and V. Malka and M. Veltcheva",
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Batani, D, Jafer, R, Redaelli, R, Dezulian, R, Lundh, O, Lindau, F, Persson, A, Osvay, K, Wahlstrom, C-G, Carroll, DC, McKenna, P, Flacco, A, Malka, V & Veltcheva, M 2010, 'Effects of laser prepulse on proton generation' Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 620, no. 1, pp. 76-82. https://doi.org/10.1016/j.nima.2010.01.064

Effects of laser prepulse on proton generation. / Batani, D.; Jafer, R.; Redaelli, R.; Dezulian, R.; Lundh, O.; Lindau, F.; Persson, A.; Osvay, K.; Wahlstrom, C.-G.; Carroll, D. C.; McKenna, P.; Flacco, A.; Malka, V.; Veltcheva, M.

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 620, No. 1, 01.08.2010, p. 76-82.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effects of laser prepulse on proton generation

AU - Batani, D.

AU - Jafer, R.

AU - Redaelli, R.

AU - Dezulian, R.

AU - Lundh, O.

AU - Lindau, F.

AU - Persson, A.

AU - Osvay, K.

AU - Wahlstrom, C.-G.

AU - Carroll, D. C.

AU - McKenna, P.

AU - Flacco, A.

AU - Malka, V.

AU - Veltcheva, M.

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N2 - Low-intensity laser prepulse ( < 10(13) W/cm(2), ns duration) are a major issue in experiments on laser-generation of protons, often limiting the performances of proton sources produced by high-intensity lasers (approximate to 10(19) W/cm(2), ps or fs duration)Several effects are associated to the prepulse and are discussed in this contribution:i) Destruction of thin foil targets by the shock generated by the laser prepulseii) Creation of preplasma on target front side affecting laser absorptioniii) Deformation of target rear sideiv) Whole displacement of thin foil targets affecting focusing conditionIn particular, we show that under oblique high-intensity irradiation and for low prepulse intensities, the proton beam is directed away from the target normal. Deviation is towards the laser forward direction, with an angle that increases with the level and duration of the ASE pedestal. Also, for a given laser pulse, beam deviation increases with proton energy.The observations are discussed in terms of Target Normal Sheath Acceleration, in combination with a laser-controllable shock wave locally deforming the target surface. (C) 2010 Elsevier B.V. All rights reserved.

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KW - proton generation

KW - shock

KW - laser absorption

KW - prepulse

KW - high-pressure phase diagram

KW - acceleration

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JF - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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