Quantum photograph

The effect of an absorbed x-ray quantum on a photographic plate is visible as metallic silver after the plate has been developed and fixed. The number of quanta absorbed help to determine the amount of this metallic silver, and the development process performs somewhat the same function as amplification in a gas-filled detector (2.5). 

When quantum counter methods are used instead of photographic recording, the whole of each diffracted beam can be allowed to enter the counter for a definite time, and the intensity is thus measured. 

During the experiments, a micropump made circulating the sample through a reservoir. The optical path of the sample cell was 0.5 mm. The temperature of the sample was kept at 50 °C. The photographic quantum yield was measured at room temperature. 

A photon absorbed by the adsorbed dye may have as much photographic effect as one absorbed by the silver halide, but not more. Usually less. The efficiency of spectral sensitization relative to the sensitivity for light absorbed by the silver halide in the presence of the dye is expressed as the relative quantum efficiency,... 

Vife have extensively studied (10) the photoinduced catalytic system (Figure 2) which is based upon the photochemical generation of cyanide ions from various cyanometa I lates, especially from octa-cyanomolybdate(IV) aod octacyanotungstate(IV) ions. Upon photolysis both compounds form cyanide ions with relatively high quantum yields. Cyanide Sons may act as a catalyst for the dimerizat ion of appropriate heterocyclic carb-2-aldehydes to enediols. Since this photocatalytic system has proved to operate also in solid layers, it may be used for an unconventional photographic process (11,12). 

There are a large number of reasons to discount the simple photon-stereomeric approach, that is endothermic, in favor of considering available modem choices based on quantum-mechanics. The field of photographic dyes provides a well-understood alternative based on resonant conjugated carbon chemistry. This approach is energy neutral (marginally exothermic). When combined with the solid state physics derived from the transistor, it offers an alternate hypothesis that is confirmable in the laboratory. 

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