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Photoactivation ratios for specification of high-energy x-ray quality: part II, 4-15-MV x rays.

Photoactivation ratios for specification of high-energy x-ray quality: part II, 4-15-MV x rays.

Medical physics (1977-01-01)

R J Schulz, R Nath

要旨

A sensitive and relatively simple method for obtaining an index of the spectral quality of x rays in the 4-15-MV range is presented. The method is based upon the simultaneous production of 115mIn by inelastic scattering of x rays by an indium foil and the production of 116mIn by neutron capture, where the neutrons are obtained from the photodisintegration of deuterium. Since the cross sections for the production of 115mIn and 116mIn have markedly different energy response functions, the ratio of radioactivities is very sensitive to the incident x-ray spectrum. Using a detector consisting of an indium foil sandwiched between two plastic bottles of D2O, photoactivation ratios (PAR) have been measured for 4-, 6-, and 10-MV x rays. It is shown that the PAR method offers a sensitive and practical means for quality control of x-ray spectra and comparison of high-energy accelerators.

材料

製品番号

ブランド

製品内容

インジウム, foil, not light tested, 50x50mm, thickness 0.02mm, 99.8%

インジウム, foil, 100x100mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, 50x100mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 100x100mm, thickness 0.20mm, as rolled, 99.999%

インジウム, foil, 10mm disks, thickness 0.75mm, as rolled, 100%

インジウム, foil, 50x50mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, 100x100mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, not light tested, 25x25mm, thickness 0.0025mm, temporary acrylic support, 99.8%

インジウム, foil, 25x25mm, thickness 0.125mm, as rolled, 99.999%

インジウム, foil, 25x25mm, thickness 0.25mm, as rolled, 99.999%

インジウム, foil, light tested, 50x50mm, thickness 0.05mm, as rolled, 100%

インジウム, foil, 100x100mm, thickness 0.5mm, as rolled, 99.999%

インジウム, foil, 6mm disks, thickness 0.04mm, 99.8%

インジウム, foil, 100x100mm, thickness 0.75mm, as rolled, 99.999%

インジウム, foil, 100x200mm, thickness 0.5mm, as rolled, 99.999%

インジウム, foil, 8mm disks, thickness 0.015mm, 99.8%

インジウム, foil, 8mm disks, thickness 0.025mm, 99.8%

インジウム, foil, not light tested, 50x50mm, thickness 0.04mm, 99.8%

インジウム, foil, 100x100mm, thickness 0.125mm, as rolled, 99.999%

インジウム, foil, 25x25mm, thickness 0.20mm, as rolled, 99.999%

インジウム, foil, light tested, 25x25mm, thickness 0.075mm, as rolled, 100%

インジウム, foil, 150x150mm, thickness 0.1mm, as rolled, 100%

インジウム, foil, 50x50mm, thickness 1.0mm, as rolled, 99.999%

インジウム, foil, 10mm disks, thickness 0.02mm, 99.8%

インジウム, foil, 15mm disks, thickness 0.015mm, 99.8%

インジウム, foil, 15mm disks, thickness 0.02mm, 99.8%

インジウム, foil, 6mm disks, thickness 0.125mm, as rolled, 100%

インジウム, foil, 8mm disks, thickness 0.0125mm, temporary acrylic support, 99.8%

インジウム, foil, 8mm disks, thickness 0.01mm, 99.8%

インジウム, foil, 8mm disks, thickness 1.0mm, as rolled, 100%