Abstract: A dispensing system is provided for alkali metals, that allows increasing the quantity of alkali metal that can be dispensed, as well as the time during which the system can be used with properties of metal vapors release which are constant over time. The system includes an alkali metal dispenser, the dispenser being a metallic container having one or more first openings and containing a mixture of one or more alkali metal compounds and one or more reducing compounds, preferably in the form of loose powders or pellets of the powders. The system further includes a metallic shield which substantially encloses the container and has one or more second openings facing the first openings.

Abstract: LEDs (30) are described containing a getter system comprising a getter material (13) and a metallic part (10), in which the getter material is optically shielded from the metallic part.

Abstract: There is described a method for the removal of gaseous contaminants from the housings of devices sensitive to the presence of such contaminants by means of nanostructured sorbers, wherein the sorber is in the form of a fiber containing an active material at its inside. Nanostructured sorbers and their manufacturing method are also described.

Abstract: A gas sorbing system is formed by gas sorbing components which are dispersed in a polymeric matrix which is porous or permeable to the gases to be sorbed. The gas sorbing components include a central nucleus, selected among a silica particle, polyhedral oligomeric silsesquioxane and a spherosilicate, to which there are bound at least one organic or metalorganic radical carrying a functional group, which is able to chemically fix the gas to be sorbed, and at least one anchoring organic radical including a chain of carbon atoms, which has the functionality of fixing the nucleus in the matrix polymer.

Abstract: An ion mobility spectrometer is disclosed wherein the ionization element is a corona discharge source (300) consisting of: a first chamber (308) provided with an inlet (309) for a gas to be analyzed and with at least one first opening (311) for communication between the internal space of the first chamber and the reaction zone of the spectrometer; a second chamber (303), contained in the first chamber, provided with an inlet (306) for an ultra-pure gas or a mixture of ultra-pure gases, and with at least one second communication opening (310, 310?) between the first and the second chamber; a pair of electrodes (304, 302?), at least one of which (304) is needle-shaped, arranged in the second chamber, with the pair of electrodes and the second opening arranged in such geometrical relationships that there is no optical path between the zone of the corona discharge and the ion detector of the IMS instrument.

Abstract: Getter systems are provided including one or more deposits of getter materials, wherein at least one of the deposits is in contact with a layer of a material having H2O transport properties.

Abstract: Getter systems are provided having a phase being active in the sorption of gas inserted in the pores of a porous material. The porous material is, in turn, dispersed in a polymeric means that is permeable to the gas to be sorbed.

Abstract: Getter systems are provided having a phase active in the sorption of gas, inserted in the pores of a porous material. The porous material is, in turn, dispersed in a polymeric means having a low permeability to the gas to be sorbed.

Abstract: A dispensing system is provided for alkali metals, that allows increasing the quantity of alkali metal that can be dispensed, as well as the time during which the system can be used with properties of metal vapors release which are constant over time. The system includes an alkali metal dispenser, the dispenser being a metallic container having one or more first openings and containing a mixture of one or more alkali metal compounds and one or more reducing compounds, preferably in the form of loose powders or pellets of the powders. The system further includes a metallic shield which substantially encloses the container and has one or more second openings facing the first openings.

Abstract: A method for carrying out analyses of a gas comprising one or more species Si, Sj, . . . , Sn by using of ion mobility spectrometry includes in carrying out two subsequent analyses in different conditions and comparing the results of these two analyses. The different conditions in the two analyses are such as to modify either the residence time of the ions corresponding to the species in the reaction zone or in the drift zone of the ion mobility spectrometer, or, selectively, the concentration of at least one of these ions.

Abstract: A method and apparatus for carrying out analyses of a gas comprising one or more species by using an ion mobility spectrometer which includes a plurality of electrodes arranged in a chamber divided by an electrifiable grid into a reaction zone provided with an inlet for the gas to be analyzed and a drift zone provided with at least one ion detector. The electrodes generate at least one electric field non-uniform in space along the longitudinal axis of the chamber.

Abstract: A method and apparatus for carrying out analyses of a gas comprising one or more species by using an ion mobility spectrometer which includes a plurality of electrodes arranged in a chamber divided by an electrifiable grid into a reaction zone provided with an inlet for the gas to be analyzed and a drift zone provided with at least one ion detector. The electrodes generate at least one electric field non-uniform in space along the longitudinal axis of the chamber.

Abstract: A method for carrying out analyses of a gas comprising one or more species Si, Sj, . . . , Sn by using of ion mobility spectrometry includes in carrying out two subsequent analyses in different conditions and comparing the results of these two analyses. The different conditions in the two analyses are such as to modify either the residence time of the ions corresponding to the species in the reaction zone or in the drift zone of the ion mobility spectrometer, or, selectively, the concentration of at least one of these ions.

Abstract: Vacuum panel comprising a discontinuous or porous filling material (5) enclosed between at least two barrier sheets (6) mutually joined along the edges, between which are gas-tightly arranged one or more rheophores (7, 7′) suitable for electrically powering at least one device (1, 2, 3, 3′, 4, 4′) arranged inside the vacuum panel, in particular a sensor for measuring the pressure (P) of the residual gases in the panel itself.

Abstract: A portable apparatus for measuring the internal pressure of a vacuum panel is described, comprising a measuring head having an cavity wherein a sensor of movement is arranged; the device, supported on a portion of the envelope of the panel, detects the movement of a part of said portion of the envelope facing the cavity, following the evacuation of the space formed by said cavity and said part of envelope.

Abstract: A getter pump includes a one-piece, substantially U-shaped frame having a bottom, a first sidewall, and a second sidewall opposing the first sidewall. The first and second sidewalls each have a plurality of slots formed therein. A plurality of getter elements are housed in the frame. Each of the getter elements is disposed in one of the slots in the first sidewall and a corresponding slot in the second sidewall. A heating member for heating the getter elements to their operating temperature is disposed in the frame. A preformed sheet of metal for use in forming a component of a getter pump has a top surface, a bottom surface, and discontinuous perforations formed therein to define a generally rectangular frame section. This frame section is connected to the remainder of the sheet by breakaway tabs and has a pair of folding lines formed therein to define a middle section and opposing outer sections. Each of the opposing outer sections has a plurality of slots formed therein.

Abstract: A getter pump, especially suitable for the use upstream, in proximity and coaxially with respect to a turbomolecular pump, comprising inside a cylindrical cartridge (10) a getter device (20) formed of a continuous coil-shaped metal wire having turns (18, 18a) or formed of several zigzag-shaped segments mutually in series between two end points (22), such as to lie in an annular-shaped peripheral zone, concentric with respect to said cartridge (10) and coated with a sintered porous layer of non-evaporable getter material in form of powder. Said cartridge (10) is inserted into a steel stub (30) which is fastened on one side to the chamber to be evacuated and on the other side to a turbomolecular pump. The getter device (20) may be directly supplied with electric current from the outside through said ends (22).