Abstract: A grape harvesting machine including a frame, a vine row shaking assembly adapted to separate the grape harvest from the vine rows, one or more storage bins each fastened to a bin bracket and a device for measuring the weight of the grape harvest that has accumulated in the storage bins; in which machine the bins are connected to their bin brackets via load sensors so that the storage bins are suspended from their respective bin brackets, the sensors are arranged above the shaking assembly, and the measuring device is configured to process the signals from the load sensors and to continuously or cyclically output a measurement signal representative of the weight of the grape harvest.

Abstract: A device to measure the activity of a radioactive liquid, including a detection module, which extends around a measurement chamber that is intended to contain the liquid, and which is configured to detect ionizing radiation and to generate a detection signal; and a processing unit, which is connected to the detection module, and programmed to estimate an activity of the radioactive liquid based on the detection signal. The detection module comprises a solid-state scintillator detector, extending around the measurement chamber; and at least two photodetectors that are optically coupled to the scintillator detector. The device comprises a capillary tube, extending around a longitudinal axis, the capillary tube being arranged to be placed in a measurement position, and the capillary tube forming the measurement chamber.

Abstract: A device to measure the activity of a radioactive liquid, including a detection module, which extends around a measurement chamber that is intended to contain the liquid, and which is configured to detect ionizing radiation and to generate a detection signal; and a processing unit, which is connected to the detection module, and programmed to estimate an activity of the radioactive liquid based on the detection signal. The detection module comprises a solid-state scintillator detector, extending around the measurement chamber; and at least two photodetectors that are optically coupled to the scintillator detector. The device comprises a capillary tube, extending around a longitudinal axis, the capillary tube being arranged to be placed in a measurement position, and the capillary tube forming the measurement chamber.

Abstract: A plastic scintillator discriminating alpha-rays from beta-rays emitted by a radioactive medium, the plastic scintillator including a plastic scintillator material capable of discriminating an alpha radiation from a beta radiation by a shape of a scintillation pulse that the alpha and the beta radiations create, having a ratio of a surface S able to be in contact with the radioactive medium to a total volume V of the plastic scintillator (S/V) greater than or equal to 7 cm?1 and the surface S able to be in contact with the radioactive medium greater than or equal to 10 cm2. A method of preparing the plastic scintillator, including: shaping the plastic scintillation material into a monolith; and machining, cutting the monolith into a final shape of the plastic scintillator. A detection device, including: the plastic scintillator; and a display device enabling an operator to read a level of ambient radioactivity.

Abstract: A radiation detector may include an active structure having an input face and an output face for incident ionizing radiation. The active structure may include: a first organic scintillator including at least one neutron-absorbing material and enabling discrimination between fast neutrons, thermal neutrons, and photons; at least one second scintillator arranged in front of the first scintillator and capable of preferentially detecting the alpha and/or beta radiation, the two scintillators having, due to the choice of their constituents, different mean pulse decay constants, and the second scintillator having a thickness smaller than the first.

Abstract: Polymerization composition for manufacturing a hybrid material for plastic scintillation detection comprising: a) monomers, oligomers or their mixtures intended to form at least one constituent polymer of a polymeric matrix and b) a liquid fluorescent mixture comprising i) 95.6 molar % to 99.1 molar % of a main primary fluorophore consisting of naphthalene and ii) 0.9 molar % to 4.4 molar % of an additional primary fluorophore; wherein the centroid of the light absorption spectrum and of the fluorescence emission spectrum, the fluorescence decay constant and the fluorescence quantum yield of which are judiciously chosen. The decay constant of the fluorescence of the hybrid material manufactured with the polymerization composition is intermediate between that of a fast plastic scintillator material and of a slow plastic scintillator. Further, it can be chosen over a wide range. The invention also relates to ready-for-use kits for manufacturing a polymerization composition.

Abstract: A radiation detector may include an active structure having an input face and an output face for incident ionizing radiation. The active structure may include: a first organic scintillator including at least one neutron-absorbing material and enabling discrimination between fast neutrons, thermal neutrons, and photons; at least one second scintillator arranged in front of the first scintillator and capable of preferentially detecting the alpha and/or beta radiation, the two scintillators having, due to the choice of their constituents, different mean pulse decay constants, and the second scintillator having a thickness smaller than the first.

Abstract: A method of checking the storage and the radioactive activity of a radioactive gas adsorbed by a porous material having scintillation properties, which comprises: (a) putting the porous material in place in an enclosure, (b) performing circulation of the radioactive gas in the enclosure, (c) monitoring the adsorption of the radioactive gas by monitoring the scintillation of the porous material, up to an adsorption level, (d) interrupting the radioactive gas circulation in the enclosure when the adsorption level is attained, (e) placing the enclosure under a vacuum, and (f) monitoring the radioactive activity of the radioactive gas adsorbed by the porous material at the end of step (c) by monitoring the scintillation of the porous material. The porous material comprises metal organic frameworks formed of inorganic sub-units constituted by Zn4O and an organic ligand.

Abstract: Hybrid material for plastic scintillation measurement comprising: a polymeric matrix; and a fluorescent mixture incorporated in the polymeric matrix and comprising, with respect to the total number of moles of primary fluorophore in the incorporated fluorescent mixture, i) from 95.6 molar % to 99.6 molar % of a main primary fluorophore consisting of naphthalene and ii) from 0.4 molar % to 20 molar % of an additional primary fluorophore. The decay constant of the fluorescence of the hybrid material is intermediate between that of a fast plastic scintillator material and of a slow plastic scintillator material. Further, they can be chosen over a wide range. The invention also relates to an associated part, device and item of equipment, to their processes of manufacture or their methods of measurement.

Abstract: A method for detecting the presence of skatole in a sample of pig adipose tissue, wherein the method comprises at least the steps of: a) subjecting an organic extract of the adipose tissue sample to an electrochemiluminescence reaction; b) measuring the luminescence intensity during step a) and, if the measured luminescence intensity exceeds a threshold value, deducing the presence of skatole in the sample of adipose tissue. The method also makes it possible, if skatole is present in the organic extract, to determine the content thereof.

Abstract: Polymerization composition for manufacturing a hybrid material for plastic scintillation detection comprising: monomers, oligomers or their mixtures intended to form at least one constituent polymer of a polymeric matrix; a liquid fluorescent mixture comprising i) 95.6 molar % to 99.1 molar % of a main primary fluorophore consisting of naphthalene and ii) 0.9 molar % to 4.4 molar % of an additional primary fluorophore, the centroid of the light absorption spectrum and of the fluorescence emission spectrum, the fluorescence decay constant and the fluorescence quantum yield of which are judiciously chosen. The decay constant of the fluorescence of the hybrid material manufactured with the polymerization composition is intermediate between that of a fast plastic scintillator material and of a slow plastic scintillator material. Further, it can be chosen over a wide range. The invention also relates to ready-for-use kits for manufacturing a polymerization composition.

Abstract: Hybrid material for plastic scintillation measurement comprising: a polymeric matrix; and a fluorescent mixture incorporated in the polymeric matrix and comprising, with respect to the total number of moles of primary fluorophore in the incorporated fluorescent mixture, i) from 95.6 molar % to 99.6 molar % of a main primary fluorophore consisting of naphthalene and ii) from 0.4 molar % to 20 molar % of an additional primary fluorophore. The decay constant of the fluorescence of the hybrid material is intermediate between that of a fast plastic scintillator material and of a slow plastic scintillator material. Further, they can be chosen over a wide range. The invention also relates to an associated part, device and item of equipment, to their processes of manufacture or their methods of measurement.

Abstract: Material for plastic scintillation measurement comprising: —a polymeric matrix; —a primary fluorophore incorporated in the polymeric matrix and composed of N-(2-ethylhexyl)carbazole, the monomer form of the N-(2-ethylhexyl)carbazole being spontaneously in physicochemical equilibrium with the exciplex form; and, —a secondary fluorophore. A plastic scintillator can be manufactured in a simplified manner with the material of the invention, while having optimized properties for the plastic scintillation measurement. The invention also relates to the process for the manufacture of the material, to a part comprising the material and to the associated measurement device, and also to the process for measurement by plastic scintillation using the material.

Abstract: A method for determining the nature of the radioelements present in an object and their activity comprises at least the following steps: a first phase of numerical simulation of spectrometric responses for an incident-energy set E and a measured-output-energy set E?, so as to obtain a simulated-data set, a second phase of non-parametric regression on the simulated data, non-parametric estimation of the quantity representing the joint probability of the triplets (E,E?,y) on the basis of simulated points (Ei,Ei?,yij) so as to deduce therefrom a meta-model S(E, E?) for any energy pair (E, E?) on a continuous function, on the basis of the meta-model S(E, E?), the determination of the nature and activity of the radioelements present in the object.

Abstract: A scintillator for imaging using X-rays or gamma rays or charged particles, includes a network of glass capillaries with an inner diameter no greater than 500 micrometers. The capillaries are filled with a polymer material made up of at least: (i) a monomer selected from the group including vinyltoluene, styrene and vinylxylene and the isomers thereof, (ii) a cross-linking agent made up of a dimethacrylate having a central chain which includes 1 to 12 carbon atoms, and (iii) lead dimethacrylate. The cross-linking agent is provided to make up 17 wt % to 60 wt % of the mixture thereof with the monomer, and the lead dimethacrylate makes up at least 5 wt %. The cross-linking agent is provided in a ratio of 1.75 to 2.25 times the weight content of the lead dimethacrylate.

Abstract: A scintillator for imaging using X-rays or gamma rays or charged particles, includes a network of glass capillaries with an inner diameter no greater than 500 micrometers. The capillaries are filled with a polymer material made up of at least: (i) a monomer selected from the group including vinyltoluene, styrene and vinylxylene and the isomers thereof, (ii) a cross-linking agent made up of a dimethacrylate having a central chain which includes 1 to 12 carbon atoms, and (iii) lead dimethacrylate. The cross-linking agent is provided to make up 17 wt % to 60 wt % of the mixture thereof with the monomer, and the lead dimethacrylate makes up at least 5 wt %. The cross-linking agent is provided in a ratio of 1.75 to 2.25 times the weight content of the lead dimethacrylate.

Abstract: A scintillator for imaging using X-rays or gamma rays or charged particles, includes a network of glass capillaries with an inner diameter no greater than 500 micrometres. The capillaries are filled with a polymer material made up of at least (i) a monomer selected from the group comprising vinyltoluene, styrene and vinylxylene and the isomers thereof, (ii) a cross-linking agent made up of a divinylbenzene or a dimethacrylate having a central chain which includes 1 to 12 carbon atoms, and (iii) triphenylbismuth. The cross-linking agent is provided to make up 10 wt % to 60% wt of the mixture thereof with the monomer, and the triphenylbismuth makes up at least 5 wt %. The cross-linking agent is provided in a ratio of 0.75 to 2.25 times the weight content of the triphenylbismuth.

Abstract: A scintillator for imaging using X-rays or gamma rays or charged particles, includes a network of glass capillaries with an inner diameter no greater than 500 micrometers. The capillaries are filled with a polymer material made up of at least (i) a monomer selected from the group comprising vinyltoluene, styrene and vinylxylene and the isomers thereof, (ii) a cross-linking agent made up of a divinylbenzene or a dimethacrylate having a central chain which includes 1 to 12 carbon atoms, and (iii) triphenylbismuth. The cross-linking agent is provided to make up 10 wt % to 60% wt of the mixture thereof with the monomer, and the triphenylbismuth makes up at least 5 wt %. The cross-linking agent is provided in a ratio of 0.75 to 2.25 times the weight content of the triphenylbismuth.

Abstract: The invention relates to a solid organic scintillator comprising a polymeric matrix in which there are dispersed one or more fluorophore compounds and one or more chemical elements having an atomic number ranging from 40 to 83, characterized in that said scintillator has a weight content of said chemical elements of at least 5% by weight relative to the total weight of the scintillator, and in that the scintillator emits an emission spectrum comprising an emission peak at a wavelength of at least 550 nm.

Abstract: A plastic scintillator material, a plastic scintillator prepared by shaping the material, a detection portal, and a method for discrimination a signal due to fast neutrons. The plastic scintillator material including a polymeric matrix into which is incorporated at least one fluorescent compound at a mass concentration greater than or equal to 10% by mass of the total mass of the material. The polymeric matrix comprises a crosslinked polymer obtainable by polymerization of a mixture comprising at least one aromatic monomer and at least one monomer which is a crosslinking agent selected from the group consisting of an alkyl diacrylate, an alkyl dimethacrylate, and a mixture thereof, and molar proportions of the crosslinking monomer and of the aromatic monomer in the mixture are from 10% to 50% and from 90% to 50%, respectively.