摘要:
The disclosure relates to an image capture device comprising an electron receiving construct and an electron emitting construct, and further comprising an inner gap providing an unobstructed space between the electron emitting construct and the electron receiving construct. The disclosure further relates to an x-ray emitting device comprising an x-ray emitting construct and an electron emitting construct, said x-ray emitting construct comprising an anode, the anode being an x-ray target, wherein the x-ray emitting device may comprise an inner gap providing an unobstructed space between the electron emitting construct and the x-ray emitting construct. The disclosure further relates to an x-ray imaging system comprising an image capture device and an x-ray emitting device.
摘要:
The present disclosure may provide a field emission device with an enhanced beam convergence. For this, the device may include a gate structure disposed between a cathode electrode and an anode electrode, wherein the gate structure includes a gate electrode and an atomic layer sheet disposed on the gate electrode, the gate electrode facing an emitter and having at least one aperture formed therein.
摘要:
Composition for producing a filter material for radiation includes a silicone and at least one dye dispersed in the silicone, wherein the composition has a relative transmission of less than 20% for radiation of the wavelength of 400 nm to 700 nm, and has a relative transmission of greater than 50% for radiation of the wavelength of 850 nm to 1025 nm.
摘要:
A field emission device is configured with a grid that includes nanotubes or nanowires. In one embodiment a cathode, an anode, and a nanotube or nanowire grid are responsive to inputs to produce a potential barrier between the grid and at least one of the cathode and the anode such that a set of electrons from the cathode can tunnel through the potential barrier to produce a net current at the anode.
摘要:
A metal hexaboride nanowire such as LaB6 with the formed metal-terminated (100) plane at the tip has a small work function, and can emit a very narrow electron beam from the (100) plane. In such emitters, contamination occurs in a very short time period, and the output current greatly decreases when used under low temperature. The cold field emitter of the present invention overcomes this problem with a stabilization process that exposes the metal-terminated (100) plane of the tip to hydrogen at low temperature, and can stably operate over extended time periods.
摘要:
System that focuses electron beams in an electro-static area to a laminar flow of electrons with uniform distribution of current density and extraordinary demagnification includes a housing having a first interior portion and a second interior portion electrically insulated from the first interior portion. The second interior portion has an electric field-free space. An electrode system is disposed in the first interior portion and includes a cathode assembly and at least one anode assembly. The cathode assembly generates an electron beam that passes through each anode assembly and then into the electric field-free space in the second interior portion. The system parameters may be calculated and created due to the CGMR conceptual method.
摘要:
System that focuses electron beams in an electro-static area to a laminar flow of electrons with uniform distribution of current density and extraordinary demagnification includes a housing having a first interior portion and a second interior portion electrically insulated from the first interior portion. The second interior portion has an electric field-free space. An electrode system is disposed in the first interior portion and includes a cathode assembly and at least one anode assembly. The cathode assembly generates an electron beam that passes through each anode assembly and then into the electric field-free space in the second interior portion. The system parameters may be calculated and created due to the CGMR conceptual method.
摘要:
A particle beam impurity removing device for removing impurities from a particle beam emitted in a beam direction is provided, including an emission angle confinement means adapted to confine emission angles of particles included in the particle beam.
摘要:
A high strength window for a radiation detection system includes a plurality of intersecting ribs defining a grid having openings therein with tops of the ribs terminate substantially in a common plane. The intersecting ribs are oriented non-perpendicularly with respect to each other and define non-rectangular openings. The window also includes a support frame around a perimeter of the plurality of intersecting ribs, and a film disposed over and spanning the plurality of intersecting ribs and openings. The film is configured to pass radiation therethrough. An associated radiation detection system includes a sensor disposed behind the window. The sensor is configured to detect radiation passing through the high strength window.