H01J2237/2445

Charged particle detection system

A scintillator assembly including an entrance surface for receiving charged particles into the scintillator assembly, the charged particles including first charged particles at a first energy level and second charged particles at a second energy level. A first scintillator structure configured for receiving the first charged particles and generating a corresponding first signal formed of first photons with a first wavelength of λ1, a second scintillator structure configured for receiving the second charged particles and generating a corresponding second signal of second photons with a second wavelength of λ2, and an emitting surface for egress of a combined signal from the scintillator assembly, the combined signal including the first and second photons, and at least one beam splitter for receiving the combined signal and separating the combined signal to first and second photons.

Mass spectrometer detector and system and method using the same

An ion detector for secondary ion mass spectrometer, the detector having an electron emission plate coupled to a first electrical potential and configured to emit electrons upon incidence on ions; a scintillator coupled to a second electrical potential, different from the first electrical potential, the scintillator having a front side facing the electron emission plate and a backside, the scintillator configured to emit photons from the backside upon incidence of electrons on the front side; a lightguide coupled to the backside of the scintillator and confining flow of photons emitted from the backside of the scintillator; and a solid-state photomultiplier coupled to the light guide and having an output configured to output electrical signal corresponding to incidence of photons from the lightguide. A SIMS system includes a plurality of such detectors movable arranged over the focal plane of a mass analyzer.

Coaxial fiber optical pyrometer with laser sample heater
11169029 · 2021-11-09 · ·

An optical pyrometer having a coaxial light guide delivers laser radiation through optics to heat a localized area on a sample, and simultaneously collects optical radiation from the sample to perform temperature measurement of the heated area. Inner and outer light guides can comprise the core and inner cladding, respectively, of a double-clad fiber (DCF), or can be formed using a combination of optical fibers in one or more coaxial bundles. Coaxial construction and shared optics facilitate alignment of the centers of the heated and observed areas on the sample. The heated area can be on the order of micrometers when using a single-mode optical fiber core as the inner light guide. The system can be configured to heat small samples within a vacuum system of charged-particle beam microscopes such as electron microscopes. A method for using the invention in a microscope is also provided.

Charged Particle Beam Device

Provided is a charged particle beam device that can impart a function of an energy filter to even a small BSE detector. The charged particle beam device includes a fluorescent substance that converts charged particles generated by irradiation of a sample with a charged particle beam into light; a detector that detects the light emitted from the fluorescent substance; a light guide element for guiding the light from the fluorescent substance to the detector; a light amount adjuster that adjusts the amount of light that is received by the detector through the fluorescent substance and the light guide element; and a control unit that controls the light amount adjuster.

Charged particle beam apparatus
11776787 · 2023-10-03 · ·

A charged particle beam apparatus includes a tilt mechanism that tilts a specimen, a detector that detects an electromagnetic wave emitted from the specimen, a table storage unit that stores a table in which tilt angle information on a tilt angle of the specimen and detection solid-angle information on the detection solid angle of the detector are associated with each other, a tilt control unit that controls the tilt mechanism, and a detection-solid-angle information acquisition unit that acquires the tilt angle information from the tilt control unit and acquires the detection solid-angle information with reference to the table.

System and method for targeted re-examination, inner layer defect analysis, protein identification, and photon computer
11774382 · 2023-10-03 ·

A system includes a target object for examination; electrical transfer points associated with the target object, the electrical transfer points being an application of energy to generate one or more photons; devices for receiving and measuring electromagnetic waves from the one or more photons, to generate a data set of information, the information including at least one of direction, wavelength, and polarity; a computer having a platform to receive the data set of information; generate a model of subatomic particle placement for the photons, as determined by the data set of information; and re-examine the model at one or more of a different initiation-to-destination energy path, a different measuring position, or a different energy input; the receiving of the data set of information, generating of the model, and the re-examination of the model provides information for industrial application.

Mercury chalcoiodides for room temperature radiation detection

Methods and devices for detecting incident radiation, such as incident X-rays or gamma-rays, are provided. The methods and devices use single-crystalline mercury chalcoiodide compounds having the formula Hg.sub.3Q.sub.2I.sub.2, where Q represents a chalcogen atom or a combination of chalcogen atoms, as photoelectric materials. Also provided are methods for growing single-crystals of the mercury chalcoiodide compounds using external organic chemical transport agents.

Blended energy ion implantation
20230038392 · 2023-02-09 ·

Ion implantation systems and methods implant varying energies of an ion beam across a workpiece in a serial single-workpiece end station, where electrodes of an acceleration/deceleration stage, bend electrode and/or energy filter control a final energy or path of the ion beam to the workpiece. The bend electrode or an energy filter can form part of the acceleration/deceleration stage or can be positioned downstream. A scanning apparatus scans the ion beam and/or the workpiece, and a power source provides varied electrical bias signals to the electrodes. A controller selectively varies the electrical bias signals concurrent with the scanning of the ion beam and/or workpiece through the ion beam based on a desired ion beam energy at the workpiece. A waveform generator can provide the variation and synchronize the electrical bias signals supplied to the acceleration/deceleration stage, bend electrode and/or energy filter.

Dual-mode silicon photomultiplier based LiDAR
11796646 · 2023-10-24 · ·

Provided is a silicon photomultiplier (SiPM) device and a silicon photomultiplier based LiDAR. The SiPM device includes a first sub-region and a second sub-region. In the first sub-region, the photodiode is operated with a first internal gain. In the second sub-region, the photodiode is operated with a second internal gain and the second internal gain in smaller than the first internal gain. A first anode generates current from the first sub-region in response to a low flux event, and the second anode generates current from the second sub-region in response to a high flux event. A common cathode outputs current generated from the first sub-region or the second sub-region.

X-ray calibration standard object
11806800 · 2023-11-07 · ·

A standard reference plate is configured for insertion into an additive manufacturing apparatus for calibrating an electron beam of the additive manufacturing apparatus. The standard reference plate includes a lower plate and an upper plate being essentially in parallel and attached spaced apart from each other, the upper plate including a plurality of holes. A predetermined hollow pattern is provided inside the holes, and a spacing between the holes and the size of the holes and a distance between the upper plate and the lower plate and a position of an x-ray sensor of the additive manufacturing apparatus with respect to the standard reference plate are arranged so that x-rays emanating from the lower plate, when the electron beam is passing through a hollow part of the hollow pattern, will not pass directly from the lower plate through any one of the holes to the x-ray sensor.