Abstract:
A thermal analysis step, a molecule ionization step and a molecular structure analysis step are executed in parallel to a temperature increasing step. In the molecule ionization step, component molecules contained in gas evolved from a sample S due to temperature increase are ionized, and in the molecular structure analysis step, any selected ion out of molecular ions obtained in the molecule ionization step is dissociated to generate fragment ions corresponding to the structural factors of the molecule, and the structure of the molecule is analyzed on the basis of the fragment ions.
Abstract:
According to one embodiment, there is provided a laser ion source. The laser ion source includes a vacuum chamber which is vacuum-exhausted and in which a target is transported and set, a valve which is opened when the target is transported into the vacuum chamber and is closed except for the transportation, a target supply chamber which holds the target to be movable, and a transportation unit which transports to the vacuum chamber the target held on the target supply chamber while opening the valve after the target supply chamber is vacuum-exhausted while closing the valve.
Abstract:
A device for ionizing particles (molecules or clusters) of a sample gas flow comprises a first flow tube for providing the sample gas flow, and a generator for producing reagent primary ions from particles of candidate reagent gas flow at a primary ion production region. The device also has an interaction region for introducing the reagent ions into the sample gas flow in order to arrange interaction between the reagent primary ions and the particles of the sample gas flow, thereby producing sample gas ions to be delivered to a detector. The generator for producing reagent primary ions is a non-radioactive soft X-ray radiation source.
Abstract:
The present invention relates to a method for repetitive chemical analysis of a gas flow, wherein said gas flow consists of a carrier gas and gaseous chemical compounds, comprising the following method steps: feeding said gas flow to a gas chromatographic separation column by means of a feeding device; collecting at least a part of said gaseous chemical compounds for a defined time period by means of a thermally based collecting device which is coupled to said gas chromatographic separation column and/or said feeding device; releasing said collected gaseous chemical compounds in a temporally focused manner by means of said thermally based collecting device; separating said released gaseous chemical compounds by means of said gas chromatographic separation column; and analyzing said separated gaseous chemical compounds by means of an analyzer. The present invention further relates to a device for performing such a method.
Abstract:
The present invention relates to a method for repetitive chemical analysis of a gas flow, wherein said gas flow consists of a carrier gas and gaseous chemical compounds, comprising the following method steps: feeding said gas flow to a gas chromatographic separation column by means of a feeding device; collecting at least a part of said gaseous chemical compounds for a defined time period by means of a thermally based collecting device which is coupled to said gas chromatographic separation column and/or said feeding device; releasing said collected gaseous chemical compounds in a temporally focused manner by means of said thermally based collecting device; separating said released gaseous chemical compounds by means of said gas chromatographic separation column; and analyzing said separated gaseous chemical compounds by means of an analyzer. The present invention further relates to a device for performing such a method.
Abstract:
A laser and monitoring system is provided. In another aspect of the present invention, the system includes a laser, pulse shaper and detection device. A further aspect of the present invention employs a femtosecond laser and binary pulse shaping (BPS). Still another aspect of the present invention uses a laser beam pulse, a pulse shaper and a SHG crystal. In yet another aspect of the present invention, a multiphoton intrapulse interference phase scan (hereinafter “MIIPS”) method is used to characterize the spectral phase of femtosecond laser pulses and to correct them. A further aspect of the system of the present invention is employed to monitor environmental chemicals and biological agents, including toxins, explosives, and diseases.
Abstract:
The invention provides an ultra-sonic jet multi-photon resonance ionization type mass analyzing device.The laser beam ionization mass analyzing device includes a pulsed gas ejecting device 12 for ejecting in pulse mode carrier gas containing sample molecules into a vacuum vessel 17, a laser beam irradiation system for irradiating laser beam for selective photo-reaction of sample molecules in said pulsed gas, repeller and extraction electrodes 18 and 19 generating an electric field for extraction of sample molecular ions generated by the photo reaction and a mass analyzing device 26 for mass analysis of extracted sample molecular ions. The laser beam irradiation system is set to irradiate laser beam to sample molecules near a position whereat a pressure time distribution of pulsed gas translating in the vacuum vessel 17 transitions from a flat-top pressure distribution to a triangular pressure distribution.
Abstract:
A plurality of molecule components included in a gas are to be ionized at the same time by PI method. For instance, a plurality of molecule components included in a gas generated at a certain instance are accurately analyzed in real time based on PI method. A gas analyzer is provided with a gas transfer apparatus for transferring a gas generated from a sample in a sample chamber to an analyzing chamber; an ionizer for ionizing the gas; a quadruple filter for separating ions by mass/charge ratio; and an ion detector for detecting the separated ions. The ionizer is provided with an ionizing region arranged in the vicinity of a gas exhaust of the gas transfer apparatus, and a lamp for applying light on the ionizing region. Since the lamp outputs light which has light directivity lower than that of a laser beam and travels by spreading, the gas entered the ionizing region in the ionizer receives light in a wide range, and the gas components inside are ionized at the same time.
Abstract:
The invention relates to a method for the mass spectrometry examination of at least one analyte, wherein an analyte to be examined is photoionized and the mass of the ions produced is determined in a mass spectrometer. The analyte to be examined is ionized at normal atmospheric ambient pressure by means of laser light using multiphoton ionization, especially resonant multiphoton ionization. The invention also relates to a device which comprises an ionization chamber in which an analyte to be examined is ionized at normal atmospheric ambient pressure using resonant multiphoton ionization and is transferred into a mass spectrometer. Said device can be used as an interface between a device for the chromatographic or electrophoretic separation of analytes and a mass spectrometer.
Abstract:
An atmospheric pressure ion source, e.g. for a mass spectrometer, that produces ions by atmospheric pressure photoionization (APPI). It includes a vaporizer, a photon source for photoionizing vapor molecules upon exit from the vaporizer, a passageway for transporting ions to, for example, a mass spectrometer system, and a means for directing the ions into the passageway. The center axis of the vaporizer and the center axis of the passageway form an angle that may be about 90 degrees. Included in the invention is a method for creating ions by atmospheric pressure photoionization along an axis and directing them into a passageway oriented at an angle to that axis.