Abstract:
An orthogonal acceleration time-of-flight (TOF) mass spectrometer in which an ion injected into an orthogonal acceleration area is periodically accelerated in a direction orthogonal to a direction of the injection and thereby ejected into a flight space. The mass spectrometer includes: an orthogonal acceleration electrode; a voltage supplier for applying a fixed level of voltage to the orthogonal acceleration electrode with a predetermined period; a TOF determiner for detecting an ion after a completion of a flight of the ion within the flight space, and determining the TOF of the ion; a storage section in which mass determination information defining a relationship between the TOF and mass-to-charge ratio of the ion depending on the period of the applied voltage is stored; and a mass-to-charge-ratio determiner for determining the mass-to-charge ratio of an ion from the TOF of the ion determined by the TOF determiner, based on the mass determination information.
Abstract:
Mass spectrometry is performed utilizing an electron ionization (EI) source. The EI source ionizes a sample at different electron energies, including below and above 70 eV. The EI source may be utilized for soft ionization as well as hard ionization. The value of the electron energy may be selected so as to favor the formation of molecular ions or other ions of high analytical value. The ion source may be an axial ion source.
Abstract:
The present invention relates to an electron bean injection control of a mass spectrometer. A mass spectrometer of the present invention includes: a reference waveform generator configured to generate a reference waveform signal having one type of a square wave and a sine wave, a waveform generator configured to generate a sync signal synchronized with the reference waveform signal; an RF module configured to generate an RF voltage signal from the reference waveform signal and apply the RF voltage signal to an RF electrode in the ion trap, an electron beam generator configured to control an operation of an ultraviolet (UV) diode for generating an electron beam injected into the ion trap according to an input control signal, and a control circuit configured to generate the control signal by using the square wave signal.
Abstract:
Mass spectrometry is performed utilizing an electron ionization (EI) source. The EI source ionizes a sample at different electron energies, including below and above 70 eV. The EI source may be utilized for soft ionization as well as hard ionization. The value of the electron energy may be selected so as to favor the formation of molecular ions or other ions of high analytical value. The ion source may be an axial ion source.
Abstract:
A single column inductively coupled plasma source with user selectable configurations operates in ion-mode for FIB operations or electron mode for SEM operations. Equipped with an x-ray detector, energy dispersive x-ray spectroscopy analysis is possible. A user can selectively configure the ICP to prepare a sample in the ion-mode or FIB mode then essentially flip a switch selecting electron-mode or SEM mode and analyze the sample using EDS or other types of analysis.
Abstract:
An aspect of the present invention relates to a method of evaluating performance of a film-forming material for forming a functional film on an eyeglass lens substrate or a functional film formed by the use of the film-forming material. The performance to be evaluated is selected from the group consisting of a sliding sensation of a surface of the functional film and an adhesion of the functional film, and the evaluation is conducted based on a change over time in a quantity of photoelectrons generated by irradiating with an X-ray the film-forming material or the functional film.
Abstract:
The present invention provides systems, devices, device components and structures for modulating the intensity and/or energies of electrons, including a beam of incident electrons. In some embodiments, for example, the present invention provides nano-structured semiconductor membrane structures capable of generating secondary electron emission. Nano-structured semiconductor membranes of this aspect of the present invention include membranes having an array of nanopillar structures capable of providing electron emission for amplification, filtering and/or detection of incident radiation, for example secondary electron emission and/or field emission. Nano-structured semiconductor membranes of the present invention are useful as converters wherein interaction of incident primary electrons and nanopillars of the nanopillar array generates secondary emission. Nano-structured semiconductor membranes of this aspect of the present invention are also useful as directed charge amplifiers wherein secondary emission from a nanopillar array provides gain functionality for increasing the intensity of radiation comprising incident electrons.
Abstract:
A mass spectrometer that allows easy replacement of an MCP (microchannel plate) and is enabled to secure orthogonality between an incident surface of the MCP and an ion track at high accuracy is provided. A flight tube 2 where ions fly is arranged in a vacuum vessel composed of a vacuum flange 6 and a body 1, and an MCP group 4 is attached to a tail end of the flight tube 2 via an MCP-IN electrode 3. A vacuum flange 6 is attachably and detachably attached to the body 1, and the MCP group 4, by a spring 710 provided on a circuit board 7 for detection attached to the vacuum flange 6, is urged toward an end portion of the flight tube 2 so that its orthogonality with respect to an ion flight track is secured.
Abstract:
A device for spectroscopy using charged analytes has an electron generator, which sends electrons through membrane into a charging chamber. The thermal strain of the membrane may be lowered significantly if a material is selected for the membrane which contains at least one component from the group of oxides, nitrides, and carbides with at least one of the elements B, Al, C, Si, and Ti or polysilicon.
Abstract:
An X-ray analytical apparatus of a wavelength dispersion type having a construction of essential parts improved using a microprobe of ion beam. An ion beam 10 is controlled to be deflected to scan in a fine region of a sample 3, a characteristic X-ray generated by irradiation of the ion beam is subjected spectro-process by a analyzing element 5 set to a predetermined radius of curvature by a curvature changing mechanism, and an X-ray having a specific wavelength selected by the spectro-process is detected by a proportional counter 7. When an angle of the analyzing element is set by a rotational stage to an incident angle of a specific X-ray determined by a detection element on the sample 3, a wide range of wavelength can be subjected to spectro-measured while the sample 3, the analyzing element 5 and the proportional counter 7 remain fixed in position. Since the proportional counter 7 is provided with a lengthy sensing portion, even if an incident position of the X-ray is changed, measurement can be made while a position of a detector remains fixed. Being a position sensitive type detector, incident position information of the X-ray different according to the wavelength can be removed, and the wavelength and strength of the X-ray can be measured while discriminating each X-ray quantum.