Howell, PGT and Boyde, A (2003) Volumes from which calcium and phosphorus X-rays arise in electron probe emission microanalysis of bone: Monte Carlo simulation. CALCIFIED TISSUE INT , 72 (6) 745 - 749. 10.1007/s00223-002-2010-9.
Full text not available from this repository.
Abstract
Monte Carlo simulations of trajectories for electrons with initial energy of 10 keV through 30 keV were used to map the 3D location of characteristic x-ray photon production for the elements C, P, and Ca until the electrons either escaped as backscattered electrons (BSE) or had insignificant energy. The x-ray production volumes for phosphorus slightly exceed those for calcium, but both greatly exceed the volume through which BSE travel prior to leaving the sample. The x-ray volumes are roughly hemispherical in shape, and the oblate spheroid from which BSE derive occupies only the upper third to half the volume of x-ray generation. Energy-dispersive x-ray emission microanalysis (EDX) may not be secure as a method for the quantitation of BSE images of bone in the scanning electron microscope (SEM). Ca:P elemental ratios from EDX analyses may also be imperfect.
| Type: | Article |
|---|---|
| Title: | Volumes from which calcium and phosphorus X-rays arise in electron probe emission microanalysis of bone: Monte Carlo simulation |
| DOI: | 10.1007/s00223-002-2010-9 |
| Keywords: | Ca : P ratio, EDX, BSE SEM, bone, excitation volume, emission volume, microanalysis, MEAN ATOMIC-NUMBER, BACKSCATTERING, COEFFICIENT, MICROSCOPY, RADIATION |
| UCL classification: | UCL > School of Life and Medical Sciences > Faculty of Life Sciences > Biosciences (Division of) UCL > School of Life and Medical Sciences > Faculty of Medical Sciences > Eastman Dental Institute |
Archive Staff Only: edit this record