Zobrazeno 1 - 10
of 38
pro vyhledávání: '"James Tickner"'
Autor:
Joel O'dwyer, James Tickner
Publikováno v:
Applied Radiation and Isotopes. 144:5-9
A computer package is described for optimising the design of energy-dispersive X-ray diffraction mineral phase analysers. An extensive database of relative analyser performances was created and a series of codes developed to search the database for t
Publikováno v:
Journal of Geochemical Exploration. 226:106780
Novel, non-destructive material analysis methods provide a useful alternative to conventional chemical assay techniques, allowing rapid or real-time determination of ore grade with minimal sample preparation. Particularly when used for quantitative a
Publikováno v:
X-Ray Spectrometry. 46:336-340
Relative total L-subshellX-ray emission intensities, IL2/IL3 and IL1/IL3, are reported for the elements Er, Tm, Yb, Hf, Ta, W, Pt and Au, measured using approximately monoenergetic X-rays at 17.4 keV. X-ray spectra were recorded using a filtered X-ra
Photoexcitation of the high-spin J =8 isomer in 176 Yb using 8.5 MeV end-point energy Bremsstrahlung
Autor:
James Tickner
Publikováno v:
Applied Radiation and Isotopes. 110:42-46
Excitation of the 1049.8keV isomeric state (t1/2=11.4s, spin difference between ground and isomeric states ΔJ=8) in (176)Yb using Bremsstrahlung radiation is observed for the first time. In contrast to the photoexcitation of isomeric states in other
Publikováno v:
X-Ray Spectrometry. 45:233-243
Relative line intensities of L1, L2 and L3 sub-shell X-rays were measured for Er, Tm, Yb, Hf, Ta, W, Pt and Au. The L-shell X-ray spectra were recorded by exciting pure element samples (eight cases) and oxide samples (two cases) with approximately 17
Publikováno v:
Journal of Sustainable Metallurgy. 2:296-303
CSIRO is developing the method of gamma activation analysis (GAA) for the rapid, non-destructive analysis of gold and other metals in mineral ores. Samples are irradiated with high-energy X-rays produced using a linear electron accelerator, resulting
Publikováno v:
Radiation Physics and Chemistry. 116:43-47
Precious metals, including gold and the platinum group metals (notable Pt, Pd and Rh), are mined commercially at concentrations of a few parts-per-million and below. Mining and processing operations demand sensitive and rapid analysis at concentratio
Publikováno v:
Powder Diffraction. 29:S102-S106
Rapid, on-line measurement of feedstock mineralogy is a highly attractive technology for the mineral processing industry. A Monte Carlo particle transport-based modelling technique has been developed to help design and predict the measurement perform
Publikováno v:
IEEE Transactions on Nuclear Science. 61:2410-2418
Neutron/Gamma pulse shape discrimination (PSD) was measured using stilbene and EJ-299-34 plastic scintillators with readout by silicon photomultipliers (SiPMs). The SiPM pulses were digitized and processed for energy and pulse shape information using
Autor:
James Tickner
Publikováno v:
Computer Physics Communications. 185:1628-1638
Monte Carlo techniques are widely used to model particle transport in complex models, as both the transport physics and level of geometric details can be simulated with arbitrary precision. The major draw-back of the Monte Carlo method is its computa