Ultra-short, beamed source of laser-driven epithermal neutrons

S. R. Mirfayzi, T. Mori, D. Rusby, C. Armstrong, H. Ahmed, M. Borghesi, C.M. Brenner, R.J. Clarke, Z.E. Davidson, D. Doria, C. P. Jones, P. McKenna, D. Neely, T. B. Scott, A. Yogo, S. Kar

Research output: Contribution to journalArticle

Abstract

Development of intense neutron sources driven by laser will enable a range of scientific investigations and new opportunities for industrial and medical applications. In particular, an ultra-short, point-like source of epithermal neutrons using laser-driven ultra-short ion pulses would open new opportunities for many unprecedented time-resolved spectroscopic and imaging applications. This paper reports the first measurement of the ultra-short bursts of epithermal (sub-MeV) neutron beams using intense lasers, produced predominately by the endothermic 7Li(p,n)7Be reaction at the near energy threshold. Using a 6LiF scintillator in time-of-flight arrangement, epithermal neutrons of ∼ 107 n/sr/pulse in the range of 20-200 keV were measured, which intrinsically offers a beamed feature and ultra-short duration. The mechanism of epithermal neutron production and the crosscalibration of the diagnostic employed for extending the spectral measurements down to epithermal range are discussed.
LanguageEnglish
Number of pages5
JournalApplied Physics Letters
Publication statusAccepted/In press - 3 May 2019

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neutrons
lasers
neutron beams
neutron sources
pulses
point sources
scintillation counters
bursts
thresholds
ions
energy

Keywords

  • epithermal neutrons
  • laser-driven ultra-short ion pulses
  • intense lasers

Cite this

Mirfayzi, S. R., Mori, T., Rusby, D., Armstrong, C., Ahmed, H., Borghesi, M., ... Kar, S. (Accepted/In press). Ultra-short, beamed source of laser-driven epithermal neutrons. Applied Physics Letters.
Mirfayzi, S. R. ; Mori, T. ; Rusby, D. ; Armstrong, C. ; Ahmed, H. ; Borghesi, M. ; Brenner, C.M. ; Clarke, R.J. ; Davidson, Z.E. ; Doria, D. ; Jones, C. P. ; McKenna, P. ; Neely, D. ; Scott, T. B. ; Yogo, A. ; Kar, S. / Ultra-short, beamed source of laser-driven epithermal neutrons. In: Applied Physics Letters. 2019.
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Mirfayzi, SR, Mori, T, Rusby, D, Armstrong, C, Ahmed, H, Borghesi, M, Brenner, CM, Clarke, RJ, Davidson, ZE, Doria, D, Jones, CP, McKenna, P, Neely, D, Scott, TB, Yogo, A & Kar, S 2019, 'Ultra-short, beamed source of laser-driven epithermal neutrons' Applied Physics Letters.

Ultra-short, beamed source of laser-driven epithermal neutrons. / Mirfayzi, S. R.; Mori, T.; Rusby, D.; Armstrong, C.; Ahmed, H.; Borghesi, M.; Brenner, C.M.; Clarke, R.J.; Davidson, Z.E.; Doria, D.; Jones, C. P.; McKenna, P.; Neely, D.; Scott, T. B.; Yogo, A.; Kar, S.

In: Applied Physics Letters, 03.05.2019.

Research output: Contribution to journalArticle

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T1 - Ultra-short, beamed source of laser-driven epithermal neutrons

AU - Mirfayzi, S. R.

AU - Mori, T.

AU - Rusby, D.

AU - Armstrong, C.

AU - Ahmed, H.

AU - Borghesi, M.

AU - Brenner, C.M.

AU - Clarke, R.J.

AU - Davidson, Z.E.

AU - Doria, D.

AU - Jones, C. P.

AU - McKenna, P.

AU - Neely, D.

AU - Scott, T. B.

AU - Yogo, A.

AU - Kar, S.

PY - 2019/5/3

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AB - Development of intense neutron sources driven by laser will enable a range of scientific investigations and new opportunities for industrial and medical applications. In particular, an ultra-short, point-like source of epithermal neutrons using laser-driven ultra-short ion pulses would open new opportunities for many unprecedented time-resolved spectroscopic and imaging applications. This paper reports the first measurement of the ultra-short bursts of epithermal (sub-MeV) neutron beams using intense lasers, produced predominately by the endothermic 7Li(p,n)7Be reaction at the near energy threshold. Using a 6LiF scintillator in time-of-flight arrangement, epithermal neutrons of ∼ 107 n/sr/pulse in the range of 20-200 keV were measured, which intrinsically offers a beamed feature and ultra-short duration. The mechanism of epithermal neutron production and the crosscalibration of the diagnostic employed for extending the spectral measurements down to epithermal range are discussed.

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Mirfayzi SR, Mori T, Rusby D, Armstrong C, Ahmed H, Borghesi M et al. Ultra-short, beamed source of laser-driven epithermal neutrons. Applied Physics Letters. 2019 May 3.