Abstract
Laboratory tests comprised: 1. Physicochemical data of the detector solution, e.g. density, viscosity, surface tension etc. of the highly concentrated, hydrochloric GaCl{sub 3}-solution. 2. The volatility of HCl and H{sub 2}O, so that the depletion of these solution components during the course of the experiment can be estimated. Particularly important is a knowledge of the volatility of Ge, the product of the nuclear reaction of the neutrinos with Ga, which must be quantitatively separated and measured. The desorption of GeCl{sub 4} from the GaCl{sub 3} solution follows an exponential rate down to residual concentrations of c/c{sub 0} = 10{sup -4}. The last traces are trapped in the solution in a less volatile form. This effect was studied. A Ge-desorption test was carried out routinely as a quality control on all delivery charges of the GaCl{sub 3}-solution (100 t) from the supplier. 3. The longtime stability of the structural materials in the aggressive GaCl{sub 3}-solution had to be assured. Most important are the PVDF liner of the detector tank made of glassfiber-reinforced vinylester plastic, the absorption columns and their packings made of glass, and containers and tanks made of polypropylene (PP) serving as transport vessels or for emergency situations (leakage). In
More>>
Citation Formats
Ammon, R v, Knittel, G, and GALLEX-Kollaboration, Europaeische.
The GaCl{sub 3}-detector of the GALLEX-experiment for the measurement of solar neutrinos - physicochemical data and properties of GaCl{sub 3}-solution and structural materials; Der GaCl{sub 3}-Detektor des GALLEX-Experiments zur Messung der Sonnenneutrinos - Stoffdaten und Eigenschaften von GaCl{sub 3}-Loesung und Strukturmaterialien.
Germany: N. p.,
1993.
Web.
Ammon, R v, Knittel, G, & GALLEX-Kollaboration, Europaeische.
The GaCl{sub 3}-detector of the GALLEX-experiment for the measurement of solar neutrinos - physicochemical data and properties of GaCl{sub 3}-solution and structural materials; Der GaCl{sub 3}-Detektor des GALLEX-Experiments zur Messung der Sonnenneutrinos - Stoffdaten und Eigenschaften von GaCl{sub 3}-Loesung und Strukturmaterialien.
Germany.
Ammon, R v, Knittel, G, and GALLEX-Kollaboration, Europaeische.
1993.
"The GaCl{sub 3}-detector of the GALLEX-experiment for the measurement of solar neutrinos - physicochemical data and properties of GaCl{sub 3}-solution and structural materials; Der GaCl{sub 3}-Detektor des GALLEX-Experiments zur Messung der Sonnenneutrinos - Stoffdaten und Eigenschaften von GaCl{sub 3}-Loesung und Strukturmaterialien."
Germany.
@misc{etde_10141511,
title = {The GaCl{sub 3}-detector of the GALLEX-experiment for the measurement of solar neutrinos - physicochemical data and properties of GaCl{sub 3}-solution and structural materials; Der GaCl{sub 3}-Detektor des GALLEX-Experiments zur Messung der Sonnenneutrinos - Stoffdaten und Eigenschaften von GaCl{sub 3}-Loesung und Strukturmaterialien}
author = {Ammon, R v, Knittel, G, and GALLEX-Kollaboration, Europaeische}
abstractNote = {Laboratory tests comprised: 1. Physicochemical data of the detector solution, e.g. density, viscosity, surface tension etc. of the highly concentrated, hydrochloric GaCl{sub 3}-solution. 2. The volatility of HCl and H{sub 2}O, so that the depletion of these solution components during the course of the experiment can be estimated. Particularly important is a knowledge of the volatility of Ge, the product of the nuclear reaction of the neutrinos with Ga, which must be quantitatively separated and measured. The desorption of GeCl{sub 4} from the GaCl{sub 3} solution follows an exponential rate down to residual concentrations of c/c{sub 0} = 10{sup -4}. The last traces are trapped in the solution in a less volatile form. This effect was studied. A Ge-desorption test was carried out routinely as a quality control on all delivery charges of the GaCl{sub 3}-solution (100 t) from the supplier. 3. The longtime stability of the structural materials in the aggressive GaCl{sub 3}-solution had to be assured. Most important are the PVDF liner of the detector tank made of glassfiber-reinforced vinylester plastic, the absorption columns and their packings made of glass, and containers and tanks made of polypropylene (PP) serving as transport vessels or for emergency situations (leakage). In addition it had to be ascertained that Ge was not trapped by adsorption of diffusion at the walls of the tank or the absorption columns. (orig./HP)}
place = {Germany}
year = {1993}
month = {Sep}
}
title = {The GaCl{sub 3}-detector of the GALLEX-experiment for the measurement of solar neutrinos - physicochemical data and properties of GaCl{sub 3}-solution and structural materials; Der GaCl{sub 3}-Detektor des GALLEX-Experiments zur Messung der Sonnenneutrinos - Stoffdaten und Eigenschaften von GaCl{sub 3}-Loesung und Strukturmaterialien}
author = {Ammon, R v, Knittel, G, and GALLEX-Kollaboration, Europaeische}
abstractNote = {Laboratory tests comprised: 1. Physicochemical data of the detector solution, e.g. density, viscosity, surface tension etc. of the highly concentrated, hydrochloric GaCl{sub 3}-solution. 2. The volatility of HCl and H{sub 2}O, so that the depletion of these solution components during the course of the experiment can be estimated. Particularly important is a knowledge of the volatility of Ge, the product of the nuclear reaction of the neutrinos with Ga, which must be quantitatively separated and measured. The desorption of GeCl{sub 4} from the GaCl{sub 3} solution follows an exponential rate down to residual concentrations of c/c{sub 0} = 10{sup -4}. The last traces are trapped in the solution in a less volatile form. This effect was studied. A Ge-desorption test was carried out routinely as a quality control on all delivery charges of the GaCl{sub 3}-solution (100 t) from the supplier. 3. The longtime stability of the structural materials in the aggressive GaCl{sub 3}-solution had to be assured. Most important are the PVDF liner of the detector tank made of glassfiber-reinforced vinylester plastic, the absorption columns and their packings made of glass, and containers and tanks made of polypropylene (PP) serving as transport vessels or for emergency situations (leakage). In addition it had to be ascertained that Ge was not trapped by adsorption of diffusion at the walls of the tank or the absorption columns. (orig./HP)}
place = {Germany}
year = {1993}
month = {Sep}
}