Abstract: The invention generally relates to systems and methods for performing multiple precursor, neutral loss and product ion scans in a single ion trap. In certain aspects, the invention provides systems including a mass spectrometer having a single ion trap, and a central processing unit (CPU), and storage coupled to the CPU for storing instructions that when executed by the CPU cause the system to apply at least one of the following ion scans to a single ion population in the single ion trap: multiple precursor ion scans, a plurality of segmented neutral loss scans, or multiple simultaneous neutral loss scans.

Abstract: The invention generally relates to systems and methods for performing multiple precursor, neutral loss and product ion scans in a single ion trap. In certain aspects, the invention provides systems including a mass spectrometer having a single ion trap, and a central processing unit (CPU), and storage coupled to the CPU for storing instructions that when executed by the CPU cause the system to apply at least one of the following ion scans to a single ion population in the single ion trap: multiple precursor ion scans, a plurality of segmented neutral loss scans, or multiple simultaneous neutral loss scans.

Abstract: Method for manufacturing a high-energy, low-voltage ignition plug comprising a ceramic material between its electrodes: there is mixed, in a container containing a liquid, from 50 to 75% of a compound which is intended to form a conductive phase and from 25 to 50% of one or more materials which allow the formation of phases of yttrium garnet after thermal processing; operations are carried out for pulverizing, drying and sieving the admixture; the admixture is pressed or injected into a mould; sintering is carried out so as to obtain a ceramic material having porosity of between 0 and 30%; the ceramic material is used in order to constitute the material located between the electrodes of a high-energy, low-voltage ignition plug. Ignition plug manufactured in that manner.

Abstract: A spacer, disposed between first and second substrates of an electron emission display, includes a main body, a resistive layer arranged on a side surface of the main body, a secondary electron emission preventing layer arranged on the resistive layer, and a diffusion preventing layer arranged between the resistive layer and the secondary electron emission layer. The diffusion preventing layer prevents interdiffusion between the resistive layer and the secondary electron emission preventing layer.

Abstract: An image displaying apparatus which can easily fix an electrode plate to a predetermined position is provided. An electric potential of the electrode plate, a distance between the electrode plate and a first substrate, and a distance between the electrode plate and a second substrate are set so that a Coulomb attracting force acts in the direction in which the electrode plate is come into contact with a shoulder portion of a spacer.

Abstract: An image forming apparatus includes a substrate, an electron-emitting device, a wiring electrode for applying an input signal to the electron-emitting device, and an image forming member to which an electron emitted from the electron-emitting device is irradiated. An acceleration electrode is provided opposite to the substrate, and a potential defining electrode is provided between the acceleration electrode and the substrate. A second support member connects the potential defining electrode and the acceleration electrode, and a first support member connects the wiring electrode and the potential defining electrode. The second support member has a semiconductive material surface, and the first support member has a resistance greater than that of the second support member by ten times or more.

Abstract: A quadrupole mass filter, or a multiple-pole mass filter in general, composed of a cylindrical main body made of an insulating material and having a star-shaped cross-sectional profile whose inward bulges are curved substantially hyperbolic, and four electrode layers of a high melting point metal deposited by a chemical vapor deposition (CVD) process. The four electrode layers are separated at the outward bulges of the star-shaped cross-sectional profile. The quadrupole mass filter has pre-rod electrodes.

Abstract: A hyperbolic ion trap is provided that includes a glass ring electrode and first and second glass end-cap electrodes. Hyperbolic surfaces of the electrodes are coated with a conductive material. The glass ring electrode and glass end-cap electrodes are formed by conforming glass substrates to a refractory mandrel and establishing hyperbolic surfaces thereon using vacuum and heat. Mass spectrometers including a glass hyperbolic ion trap are also provided as well.

Abstract: A flat panel device contains a faceplate, a backplate, a light-emitting mechanism, and a spacer. The faceplate is connected to the backplate to form a sealed enclosure. The spacer is situated within the enclosure and supports the two plates against forces acting towards the enclosure. The spacer can take various forms and can be constituted with various materials. In one embodiment, the spacer includes a spacer wall formed with multiple sheets of laminated material consisting of ceramic, glass-ceramic, ceramic reinforced glass, devitrifying glass, or metal coated with electrical insulation. In another embodiment, the spacer includes a spacer wall having a surface that follows a non-straight path adjacent the faceplate. In yet another embodiment, the spacer is a spacer structure through which a plurality of holes extends. The light-emitting mechanism is typically implemented with an electron-emitting cathode and light-emissive material situated over the faceplate.

Abstract: A spacer 40 for use in a field emission device includes a comb-like structure having a plurality of elongated filaments 42 joined to a support member 44. The filaments 42, which may be glass, are positioned longitudinally in a single layer between the facing surfaces of the anode structure 10 and the electron emitting: structure 12. Support member 44 is positioned entirely outside the active regions of anode structure 10 and emitting structure 12. Spacer 40 provides voltage isolation between the anode structure 10 and the cathode structure 12, and also provides standoff of the mechanical forces of vacuum within the assembly. In a second embodiment, spacer 50 includes elongated filaments 52 joined at each end to a support member 54 a and 54b, the additional support facilitating handling, fabrication and assembly.

Abstract: The present invention relates to improvement of a quadrupole electrode for use in a mass spectrometer or the like, in which two pairs of electrode rods 1, 2, 3 and 4 formed in such a manner that the section of the opposed face of each rod is hyperbolic or circular, and each electrode rod is made of a ceramic and the surface of the electrode is coated with a coating layer 5 of a conductive metal. Further, the present invention relates to a production process, characterized by incorporating such four electrodes at predetermined intervals. Since the electrodes are mainly made of a ceramic which is easily formable with a high dimensional accuracy, the adjustment of the positional relationship between the electrodes during assembling can be made without much effort, which enables a quadrupole electrode having a high performance to be provided with a good reproducibility at a low cost.

Abstract: A lamp bridge may be formed from a siliceous hollow tube positioned between and melted to bridge supports. The hollow tube melts more quickly, and more completely, and therefore bonds stress free and more durable to the bridge supports.

Abstract: A fixed construction for plate electrodes in a flat display unit, wherein holes provided along a common axis through a plurality of plate electrodes have a diameter smaller than that of a tapered insulating pin to be inserted therein, and the peripheral portions of the holes are formed in a thin or tapered construction, thereby supporting and fixing the plate electrodes in position without interposing a spacer and without causing deformation to the areas around the peripheries of the holes formed in the plate electrodes when insulating pins are fitted.

Abstract: In an electron tube sealing structure, a cylindrical insulator is metallized to produce metallized layers on both end surfaces, and sealing metal members are soldered to the metallized layers correspondingly, so that a vacuum chamber is provided in the interior of the cylindrical insulator. The cylindrical insulator is provided with at least one salient portion at an inner end thereof. The salient portion is parallel to a direction of an electric field produced by a voltage applied across the sealing metal members, and shields one of the metallized layers which is positioned on the side of a negative electrode in regard to the vacuum chamber, so that the emission of electrons is avoided from the corresponding metallized layer to prevent a creeping discharge from being induced on the inner surface of the cylindrical insulator.

Abstract: A quartz quadrupole comprises a quartz substrate, conductive strips and low-conductivity strips. The substrate includes hyperbolic inner surfaces which provide the geometry for the conformed conductive strips to produce an appropriate electric field for mass filter operation. The use of quartz as a substrate material provides the thermal and electrical characteristics required by high performance mass filtering operations, including scanning mode operation to 800 amu and above. During such operation, potential field distortions by accumulated charge in cusp sections of the substrate are minimized by the low-conductivity strips, which are arranged to overlap longitudinal edges of the conductive strips. Formation of the quartz substrate is made possible by high precision machining, grinding and polishing of a refractory metal mandrel. The actual step of forming the substrate is simplified by the low thermal coefficient of expansion of the quartz.

Abstract: By using micro-connection techniques, for example by means of ceramic glass and conducting glass, an electron-optical system can be manufactured with which the emitted beam can be deflected through 90.degree. within a very short distance (of the order of several mm).

Abstract: An electron gun for a vacuum tube employs a mounting element having an inner annular section with a defined thickness made to predetermined dimensional tolerances. The cathode subassembly is positioned on one surface of the annular section and a grid electrode is located on the opposing surface. When the mounting element is set within the vacuum tube facing the anode electrode, the location of the cathode subassembly and grid electrode in the mounting element establishes a precise cathode-to-anode spacing and the electrodes are properly aligned and concentric to a central axis along which the electron beam travels.

Abstract: An electron tube having a cathode and an anode with the anode subtantially surrounding the cathode and providing an electron-interaction space therebetween for providing a magnetic field having a substantial component oriented in the axial direction traversing this interaction space. The cathode structure is of reduced axial direction dimension for permitting the length of the magnetic field component to be minimized. The electron tube includes a substantial tubular cathode and a support means that is axially oriented and that is disposed adjacent to the cathode and is spaced away from the cathode substantially throughout its axial length. This support means is attached at one end to one end of the cathode and at the other end is supported at a vocation in the electron tube.

Abstract: A novel electron gun assembly having at least one generally longitudinally-extending electron beam path includes a plurality of electrodes attached to at least two electrically-insulating support rods. Each of the support rods has a surface having at least two indexing cavities formed therein for aligning the support rods along the beam path.

Abstract: A high-voltage, high vacuum electron discharge tube particularly an X-ray tube, having a metal envelope and an anode insulatingly mounted within the envelope. To avoid the deleterious effects of charge formed on the insulator surface, the insulator is formed with a recess of larger size than the anode diameter and the anode is secured to the insulator by mounting it at the region of the bottom of the recess.

Abstract: In an electron beam generating system including a cathode, a Wehnelt electrode, an anode, three groups of at least two electrically conductive rods, the rods of each group being connected to a respective one of the cathode, the Wehnelt electrode and the anode, a plurality of electrically insulating members each holding a respective rod, and a metal disc to which the insulating members are fastened in a manner to insulate each rod from the disc and from the other rods, the disc is made in the form of a circular ring provided with a central opening and at least six additional openings disposed around the central opening, the insulating members are tubular members each having a central bore and each projecting from both sides of the disc, and each rod is inserted in the bore of a respective insulating member, and extends at least partially through, and is fastened to, its respective insulating member.

Abstract: The invention relates to an electron gun for a color television picture tube which has a rapid heating characteristic to produce electron emission in a short time. The indirectly heated electron emission portion of the cathode is supported from thin contoured support straps which provide a low thermal conductivity to the electron gun body.

Abstract: In electron beam discharge tubes breakdown in the form of a gaseous arc can occur. An improved form of electrode which protects an insulating support against local high-stress fields is described. The electrode has a conductive shield extending to the other side of an interface between the electrode and the insulating support. A mechanism, the "single surface multipactor effect," which could cause the breakdown is also described.

Abstract: Ceramic support is mounted between the housing and an electrode to physically support the electrode with respect to the housing. Mechanical support is provided in an environment of high electrical potential in a gaseous environment where Paschen breakdown, vacuum breakdown and surface breakdown are significant failure modes which result in electric conduction between the housing and electrode.