Zobrazeno 1 - 10
of 14
pro vyhledávání: '"A K M M Haque"'
Autor:
A K M M Haque, L K Howard
Publikováno v:
Semiconductor Science and Technology. 7:1316-1324
Epitaxial films of CaF2 have been grown on Si(100) and Si(111). The substrate temperatures required for epitaxy, determined by Rutherford backscattering of 340 keV protons, are compared with those previously reported, as are the results of examinatio
Autor:
A. K. M. M. Haque
Publikováno v:
IEEE Transactions on Nuclear Science. 28:3190-3193
A proton beam stable at energies upto 400 KeV has been obtained by attenuation due to back-scattering from a gold layer on a Be substrate and by collimation. The beam has been used to measure the window thicknesses of silicon surface barrier detector
Autor:
A K M M Haque, M H Ali
Publikováno v:
Physics in Medicine and Biology. 34:1195-1202
A programme of work on soft errors of 64 K and 256 K DRAMs has begun in these laboratories, studying the error rates and modelling them. A feasibility study is being carried out of neutron dosimetry employing soft errors in 256 K DRAM. Thermal neutro
Autor:
M E Chambers, A K M M Haque
Publikováno v:
Journal of Physics E: Scientific Instruments. 10:940-944
A spectrometer for the study of surface barrier detectors using either a collimated alpha particle source or a particle beam from an accelerator is described. A Peltier cooling module and associated temperature control system maintain the temperature
Autor:
A K M M Haque, M J Geary
Publikováno v:
Journal of Physics E: Scientific Instruments. 11:795-800
A silicon semiconductor detector spectrometer for the study of stopping power and straggling of alpha particles in liquids is described. The absolute thickness of the liquid layer has been measured using a Michelson interferometer and a micrometer, t
Autor:
A K M M Haque, D G Hasko
Publikováno v:
Journal of Physics D: Applied Physics. 20:1284-1290
340 keV protons and 5.5 MeV alpha particles have been employed to measure the window thickness of silicon surface barrier diodes that have undergone oxidation in potassium dichromate solution, steam oxidation and oxygen gas aging. It has been found t
Autor:
A K M M Haque
Publikováno v:
British Journal of Applied Physics. 17:905-916
A method is described, based on relative - dE/dx values in air, for calculating the energy expenditure of non-relativistic α particles in a condensed medium; this has then been applied to the case of the respiratory system on which α-emitting daugh
Autor:
A K M M Haque
Publikováno v:
British Journal of Applied Physics. 18:657-662
A computer programme has been used to calculate the energy expended by α particles in human respiratory tissue. The method of computation is more general and the results are an improvement on those of previous work by Haque, because of the eliminati
Publikováno v:
Physics in Medicine and Biology. 10:505-514
Using a scintillation counter technique, a systematic study of radon concentration has been made in various environments and conditions viz., normal living accommodation with adequate and inadequate ventilation, completely sealed offices and laborato
Autor:
John S Bevan, A K M M Haque
Publikováno v:
Physics in Medicine and Biology. 13:105-112
Calculations are reported of the possible size of malignant foci in cases of lung cancer attributable to the inhalation of ?-active material. It is shown that the number of cells in these foci probably lies between 15 and 20, and that the proportion