Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion

S. R. Mirfayzi, A. Alejo, H. Ahmed, L. A. Wilson, S. Ansell, C. Armstrong, N. M. H. Butler, R. J. Clarke, A. Higginson, M. Notley, D. Raspino, D. R. Rusby, M. Borghesi, N. J. Rhodes, P. McKenna, D. Neely, C. M. Brenner, S. Kar

Research output: Contribution to journalArticlepeer-review

57 Downloads (Pure)


An epithermal neutron imager based on detecting alpha particles created by boron neutron capture mechanism is discussed. The diagnostic mainly consists of a mm thick Boron Nitride (BN) sheet (as an alpha converter) in contact with a non-borated cellulose nitride film (LR115 type-II) detector. While the BN absorbs the neutrons below 0.1 eV, the fast neutrons register insignificantly in the detector due to their low neutron capture and recoil cross-sections. The use of solid-state nuclear track detectors (SSNTD), unlike image plates, micro-channel plates and scintillators, provide safeguard from the x-rays, gamma-rays and electrons. The diagnostic was tested on a proof-of-principle basis, in front of a laser driven source of moderated neutrons, which suggests the potential of using this diagnostic (BN+SSNTD) for dosimetry and imaging
Original languageEnglish
Number of pages8
JournalJournal of Instrumentation
Publication statusAccepted/In press - 12 Jul 2016
Event4th International Conference Frontiers in Diagnostic Technologies - Laboratori Nazionali di Frascati, Frascati, Italy
Duration: 30 Mar 20161 Apr 2016


  • instrumentation
  • neutron sources
  • neutron detectors
  • neutron radiography
  • epithermal neutron imager
  • alpha particles
  • boron neutron capture mechanism
  • dosimetry
  • imaging
  • alpha conversion


Dive into the research topics of 'Detector for imaging and dosimetry of laser-driven epithermal neutrons by alpha conversion'. Together they form a unique fingerprint.

Cite this