title: A compact high-energy neutron spectrometer.
abstract: A compact liquid organic neutron spectrometer based on a single NE213 liquid scintillator (5 cm diameter x 5 cm) is described. The spectrometer is designed to measure neutron fluence spectra over the energy range 2-200 MeV and is suitable for use in neutron fields having any type of time structure. Neutron fluence spectra are obtained from measurements of two-parameter distributions (counts versus pulse-height and pulse shape) using the Bayesian unfolding code MAXED. Calibration and test measurements made using a pulsed neutron beam with a continuous energy spectrum are described and the application of the spectrometer to radiation dose measurements is discussed.
authors.affiliation: Department of Physics, University of Cape Town, Rondebosch, Cape 7700, South Africa. fbrooks@science.uct.ac.za
authors.forename: F D
authors.initials: FD
authors.lastname: Brooks
authors.forename: A
authors.initials: A
authors.lastname: Buffler
authors.forename: M S
authors.initials: MS
authors.lastname: Allie
authors.forename: M S
authors.initials: MS
authors.lastname: Herbert
authors.forename: M R
authors.initials: MR
authors.lastname: Nchodu
authors.forename: D T L
authors.initials: DT
authors.lastname: Jones
authors.forename: F D
authors.initials: FD
authors.lastname: Smit
authors.forename: R
authors.initials: R
authors.lastname: Nolte
authors.forename: V
authors.initials: V
authors.lastname: Dangendorf
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008904:Miniaturization; D009502:Neutrons; D009930:Organic Chemicals / Q000737:chemistry* / Q000528:radiation effects*; D011829:Radiation Dosage; D011874:Radiometry / Q000295:instrumentation* / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D012996:Solutions; D013057:Spectrum Analysis / Q000295:instrumentation*
chemical_list: D009930:Organic Chemicals; D012996:Solutions