H01J2237/24415

SENSOR MODULE FOR SCANNING ELECTRON MICROSCOPY APPLICATIONS
20230230800 · 2023-07-20 ·

A scanning electron microscopy (SEM) system is disclosed. The SEM system includes an electron source configured to generate an electron beam and a set of electron optics configured to scan the electron beam across the sample and focus electrons scattered by the sample onto one or more imaging planes. The SEM system includes a first detector module positioned at the one or more imaging planes, wherein the first detector module includes a multipixel solid-state sensor configured to convert scattered particles, such as electrons and/or x-rays, from the sample into a set of equivalent signal charges. The multipixel solid-state sensor is connected to two or more Application Specific Integrated Circuits (ASICs) configured to process the set of signal charges from one or more pixels of the sensor.

METHOD FOR OPERATING A PARTICLE BEAM MICROSCOPE, PARTICLE BEAM MICROSCOPE AND COMPUTER PROGRAM PRODUCT
20230011964 · 2023-01-12 ·

A method for operating a particle beam microscope comprises scanning an object using a particle beam and detecting electrons and x-ray radiation when scanning an object using a particle beam. Improved x-ray radiation information can be generated by combining weighted x-ray radiation information items according to the formula

[00001] S e ( r .fwdarw. "\[Rule]" i ) = .Math. j w ( i , j ) .Math. S ( r .fwdarw. "\[Rule]" j ) ,

wherein S({right arrow over (r)}.sub.i) is the detected x-ray radiation intensity assigned to a location {right arrow over (r)}.sub.i. The following holds true for the weights, for example:

[00002] w ( i , j ) = e - ( r .fwdarw. "\[Rule]" i - r .fwdarw. "\[Rule]" j ) 2 / σ f 2 .Math. e - ( I ( r .fwdarw. "\[Rule]" i ) - I ( r .fwdarw. "\[Rule]"

Sensor module for scanning electron microscopy applications
11610757 · 2023-03-21 · ·

A scanning electron microscopy (SEM) system is disclosed. The SEM system includes an electron source configured to generate an electron beam and a set of electron optics configured to scan the electron beam across the sample and focus electrons scattered by the sample onto one or more imaging planes. The SEM system includes a first detector module positioned at the one or more imaging planes, wherein the first detector module includes a multipixel solid-state sensor configured to convert scattered particles, such as electrons and/or x-rays, from the sample into a set of equivalent signal charges. The multipixel solid-state sensor is connected to two or more Application Specific Integrated Circuits (ASICs) configured to process the set of signal charges from one or more pixels of the sensor.

Multiple image segmentation and/or multiple dynamic spectral acquisition for material and mineral classification
20220319206 · 2022-10-06 · ·

The invention relates to method and system configured for material analysis and mineralogy. At least one image based on first emission from a sample is provided. First spectra of the sample based on second emissions from the second scan locations of the image are provided. A confidence score is calculated for every first spectrum, and second scan location(s) with confidence score(s) below a threshold value are selected. Second emissions from the selected second scan location(s) are acquired to provide new image and determine new second scan locations within the respective new image.

Charged particle beam device

A charged particle beam device including: a charged particle beam source which emits a charged particle beam; a blanking device which has an electrostatic deflector that deflects and blocks the charged particle beam; an irradiation optical system which irradiates a specimen with the charged particle beam; and a control unit which controls the electrostatic deflector, the control unit performing processing of: acquiring a target value of a dose of the charged particle beam for the specimen; setting a ratio A/B of a time A during which the charged particle beam is not blocked to a unit time B (where A≠B, A≠0), based on the target value; and operating the electrostatic deflector based on the ratio.

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.

Radiation detector and radiation detection apparatus

Provided are a radiation detector and a radiation detection apparatus in which the efficiency of detecting radiation is enhanced by increasing a portion capable of detecting radiation. A radiation detector includes a semiconductor part having a plate-like shape, the semiconductor part being provided with a through hole penetrating the semiconductor part, one surface of the semiconductor part being an incident surface for radiation. The semiconductor part has a sensitive portion capable of detecting incident radiation, the sensitive portion including an inner edge of the incident surface.

Charged Particle Beam Apparatus
20220216033 · 2022-07-07 ·

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.

Charged Particle Beam Device
20220084783 · 2022-03-17 ·

A charged particle beam device including: a charged particle beam source which emits a charged particle beam; a blanking device which has an electrostatic deflector that deflects and blocks the charged particle beam; an irradiation optical system which irradiates a specimen with the charged particle beam; and a control unit which controls the electrostatic deflector, the control unit performing processing of: acquiring a target value of a dose of the charged particle beam for the specimen; setting a ratio A/B of a time A during which the charged particle beam is not blocked to a unit time B (where A≠B, A≠0), based on the target value; and operating the electrostatic deflector based on the ratio.

Scanning electron microscope with composite detection system and specimen detection method

A scanning electron microscope with a composite detection system and a specimen detection method. The scanning electron microscope includes a composite objective lens system including an immersion magnetic lens and an electro lens, configured to focus an initial electron beam to a specimen to form a convergent beam spot; a composite detection system located in the composite objective lens system; and a detection signal amplification and analysis system. A magnetic field of the immersion magnetic lens is immersed in the specimen; the electro lens is configured to decelerate the initial electron beam and focus the initial electron beam onto the specimen, and separate BSEs from a transmission path of an X-ray; the composite detection system is located below an inner pole piece of the immersion magnetic lens, is located above the control electrode, and includes an annular BSE detector and an annular X-ray detector that have a same axis center.