Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions

A. Alejo, A. Green, H. Ahmed, A.P.L. Robinson, M. Cerchez, R. Clarke, D. Doria, S. Dorkings, J. Fernandez, P. McKenna, S.R. Mirfayzi, K. Naughton, D. Neely, P. Norreys, C. Peth, H. Powell, J.A. Ruiz, J. Swain, O. Willi, M. Borghesi & 1 others S. Kar

Research output: Contribution to journalSpecial issue

6 Citations (Scopus)

Abstract

The most established route to create a laser-based neutron source is by employing laser accelerated, low atomic number ions in fusion reactions. In addition to benefiting from the high reaction cross-sections at moderate energies of the projectile ions, the anisotropy in the neutron emission is another important feature of beam-fusion reactions. Using a simple numerical model based on neutron generation in a pitcher-catcher scenario, anisotropy in the neutron emission was studied for the deuterium-deuterium fusion reaction. Simulation results are consistent with the narrow divergence ( 70 full width at half maximum) neutron beam recently obtained from an experiment employing multi-MeV deuteron beams of narrow divergence (upto 30 FWHM depending on the ion energy) accelerated by a subpetawatt laser pulse from thin deuterated plastic foils via the Target Normal Sheath Acceleration mechanism. By varying the input ion beam parameters, simulations show that a further improvement in the neutron beam directionality (i.e. reduction in the beam divergence) can be obtained by increasing the projectile ion beam temperature and cut-off energy, as expected from the interactions with higher power lasers at upcoming facilities.

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Neutron beams
neutron beams
Neutron emission
divergence
Fusion reactions
fusion
Projectiles
Deuterium
Full width at half maximum
Ion beams
neutron emission
Lasers
Ions
Anisotropy
lasers
projectiles
deuterium
ions
Neutron sources
ion beams

Keywords

  • laser
  • neutron
  • beam fusion

Cite this

Alejo, A. ; Green, A. ; Ahmed, H. ; Robinson, A.P.L. ; Cerchez, M. ; Clarke, R. ; Doria, D. ; Dorkings, S. ; Fernandez, J. ; McKenna, P. ; Mirfayzi, S.R. ; Naughton, K. ; Neely, D. ; Norreys, P. ; Peth, C. ; Powell, H. ; Ruiz, J.A. ; Swain, J. ; Willi, O. ; Borghesi, M. ; Kar, S. / Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions. In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 2016 ; Vol. 829. pp. 176-180.
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title = "Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions",
abstract = "The most established route to create a laser-based neutron source is by employing laser accelerated, low atomic number ions in fusion reactions. In addition to benefiting from the high reaction cross-sections at moderate energies of the projectile ions, the anisotropy in the neutron emission is another important feature of beam-fusion reactions. Using a simple numerical model based on neutron generation in a pitcher-catcher scenario, anisotropy in the neutron emission was studied for the deuterium-deuterium fusion reaction. Simulation results are consistent with the narrow divergence ( 70 full width at half maximum) neutron beam recently obtained from an experiment employing multi-MeV deuteron beams of narrow divergence (upto 30 FWHM depending on the ion energy) accelerated by a subpetawatt laser pulse from thin deuterated plastic foils via the Target Normal Sheath Acceleration mechanism. By varying the input ion beam parameters, simulations show that a further improvement in the neutron beam directionality (i.e. reduction in the beam divergence) can be obtained by increasing the projectile ion beam temperature and cut-off energy, as expected from the interactions with higher power lasers at upcoming facilities.",
keywords = "laser, neutron, beam fusion",
author = "A. Alejo and A. Green and H. Ahmed and A.P.L. Robinson and M. Cerchez and R. Clarke and D. Doria and S. Dorkings and J. Fernandez and P. McKenna and S.R. Mirfayzi and K. Naughton and D. Neely and P. Norreys and C. Peth and H. Powell and J.A. Ruiz and J. Swain and O. Willi and M. Borghesi and S. Kar",
year = "2016",
month = "9",
day = "1",
doi = "10.1016/j.nima.2016.05.057",
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pages = "176--180",
journal = "Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment",
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Alejo, A, Green, A, Ahmed, H, Robinson, APL, Cerchez, M, Clarke, R, Doria, D, Dorkings, S, Fernandez, J, McKenna, P, Mirfayzi, SR, Naughton, K, Neely, D, Norreys, P, Peth, C, Powell, H, Ruiz, JA, Swain, J, Willi, O, Borghesi, M & Kar, S 2016, 'Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions' Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 829, pp. 176-180. https://doi.org/10.1016/j.nima.2016.05.057

Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions. / Alejo, A.; Green, A.; Ahmed, H.; Robinson, A.P.L.; Cerchez, M.; Clarke, R.; Doria, D.; Dorkings, S.; Fernandez, J.; McKenna, P.; Mirfayzi, S.R.; Naughton, K.; Neely, D.; Norreys, P.; Peth, C.; Powell, H.; Ruiz, J.A.; Swain, J.; Willi, O.; Borghesi, M.; Kar, S.

In: Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 829, 01.09.2016, p. 176-180.

Research output: Contribution to journalSpecial issue

TY - JOUR

T1 - Numerical study of neutron beam divergence in a beam-fusion scenario employing laser driven ions

AU - Alejo, A.

AU - Green, A.

AU - Ahmed, H.

AU - Robinson, A.P.L.

AU - Cerchez, M.

AU - Clarke, R.

AU - Doria, D.

AU - Dorkings, S.

AU - Fernandez, J.

AU - McKenna, P.

AU - Mirfayzi, S.R.

AU - Naughton, K.

AU - Neely, D.

AU - Norreys, P.

AU - Peth, C.

AU - Powell, H.

AU - Ruiz, J.A.

AU - Swain, J.

AU - Willi, O.

AU - Borghesi, M.

AU - Kar, S.

PY - 2016/9/1

Y1 - 2016/9/1

N2 - The most established route to create a laser-based neutron source is by employing laser accelerated, low atomic number ions in fusion reactions. In addition to benefiting from the high reaction cross-sections at moderate energies of the projectile ions, the anisotropy in the neutron emission is another important feature of beam-fusion reactions. Using a simple numerical model based on neutron generation in a pitcher-catcher scenario, anisotropy in the neutron emission was studied for the deuterium-deuterium fusion reaction. Simulation results are consistent with the narrow divergence ( 70 full width at half maximum) neutron beam recently obtained from an experiment employing multi-MeV deuteron beams of narrow divergence (upto 30 FWHM depending on the ion energy) accelerated by a subpetawatt laser pulse from thin deuterated plastic foils via the Target Normal Sheath Acceleration mechanism. By varying the input ion beam parameters, simulations show that a further improvement in the neutron beam directionality (i.e. reduction in the beam divergence) can be obtained by increasing the projectile ion beam temperature and cut-off energy, as expected from the interactions with higher power lasers at upcoming facilities.

AB - The most established route to create a laser-based neutron source is by employing laser accelerated, low atomic number ions in fusion reactions. In addition to benefiting from the high reaction cross-sections at moderate energies of the projectile ions, the anisotropy in the neutron emission is another important feature of beam-fusion reactions. Using a simple numerical model based on neutron generation in a pitcher-catcher scenario, anisotropy in the neutron emission was studied for the deuterium-deuterium fusion reaction. Simulation results are consistent with the narrow divergence ( 70 full width at half maximum) neutron beam recently obtained from an experiment employing multi-MeV deuteron beams of narrow divergence (upto 30 FWHM depending on the ion energy) accelerated by a subpetawatt laser pulse from thin deuterated plastic foils via the Target Normal Sheath Acceleration mechanism. By varying the input ion beam parameters, simulations show that a further improvement in the neutron beam directionality (i.e. reduction in the beam divergence) can be obtained by increasing the projectile ion beam temperature and cut-off energy, as expected from the interactions with higher power lasers at upcoming facilities.

KW - laser

KW - neutron

KW - beam fusion

UR - http://www.sciencedirect.com/science/article/pii/S0168900216304466

U2 - 10.1016/j.nima.2016.05.057

DO - 10.1016/j.nima.2016.05.057

M3 - Special issue

VL - 829

SP - 176

EP - 180

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

T2 - Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

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

SN - 0168-9002

ER -