Abstract: The present invention provides a method for forming a sensitive film for neutron detection, wherein the sensitive film is formed by electrophoresis coating, the liquid used for electrophoresis coating includes neutron sensitive material, electrophoresis paint and deionized water, and the neutron sensitive material is 10B single substance, 10B compound or mixture containing 10B. The sensitive film for neutron detection has the high detection efficiency because of the high content of 10B. The sensitive film for neutron detection has the uniform and stable film thickness, and excellent consistency. The production efficiency and the cost of the sensitive film are improved.

Abstract: The invention discloses a wind protection anchoring system for a bridge crane and a method, wherein the system comprises four wind protection pull rods mounted on the bridge crane and four ground wind protection foundations corresponding to the four wind protection pull rods; the wind protection pull rod comprises a pull rod body, a pull rod nut, a driving device and a lock pin; the pull rod nut is connected to the pull rod body with threads thereon and mounted on the bridge crane; the top end of the pull rod body is fixedly provided with a driven device and the bottom end is connected to a lock pin; a lock pin fixing groove is formed on the ground wind protection foundation, at which mounted a fixing plate opened with a first opening and a second opening,; the driving device is driven by the wind protection anchoring control module to enable the pull rod body to descend and enter into the lock pin fixing groove through the second opening, and enable the pull rod body to ascend and being blocked by the first

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

Abstract: A method for preparing a carbon nanotube (CNT) film is provided, comprising: providing a growth chamber of CNTs, which includes an inlet end, an outlet end, and a first-level growth cavity and a second-level growth cavity, and the first-level growth cavity and the second-level growth cavity are in fluid communication between the inlet end and the outlet end; making precursor materials, which are used for forming CNTs, react in at least the first-level growth cavity of the growth chamber of CNTs to generate CNTs; and making a carrier gas flow into the growth chamber through the inlet end, and pass through the first-level growth cavity and the second-level growth cavity in sequence, wherein, a radial dimension of the first-level growth cavity in a flowing direction of the carrier gas is smaller than that of the second-level growth cavity at a junction between the first-level growth cavity and the second-level growth cavity, and a bubble blowing process is conducted with the precursor materials under the drive o

Abstract: The present disclosure provides an ion mobility spectrometer, which comprises: a power supply circuit, configured to provide a power supply voltage; a corona discharge configured to generate ions to be subjected to measurement, through corona discharge; an ion migration circuit configured to control migration of the ions; a migration zone structure configured to realize, under control of the ion migration circuit, mobility spectrum measurement of the ions which pass through the migration zone structure; a redundant charge extraction electrode arranged between the corona discharge structure and the migration zone structure, so that the ions which are generated by the corona discharge structure can pass therethrough to reach the migration zone structure; and a redundant charge extraction circuit, wherein the redundant charge extraction electrode is connected to the ground through the redundant charge extraction circuit.

Abstract: the present invention provides a method for forming a sensitive film for neutron detection, wherein the sensitive film is formed by electrophoresis coating, the liquid used for electrophoresis coating includes neutron sensitive material, electrophoresis paint and deionized water, and the neutron sensitive material is 10B single substance, 10B compound or mixture containing 10B. The sensitive film for neutron detection has the high detection efficiency because of the high content of 10B. The sensitive film for neutron detection has the uniform and stable film thickness, and excellent consistency. The production efficiency and the cost of the sensitive film are improved.

Abstract: A mold and a method of manufacturing GOS ceramic scintillator by using the mold are provided. The mold comprises: a female outer sleeve having a cavity disposed inside; a plurality of female blocks disposed inside the cavity, the plurality of female blocks being put together to form a composite structure having a vertical through hole; and a male upper pressing head and a male lower pressing head, wherein each of the male upper pressing head and the male lower pressing head has a shape consistent with that of the vertical through hole. The disclosure may reduce defects of the related art in hot-pressing-sintering such as a mold has a short retirement period and a high material waste, significantly reduce the cost for production of the GOS ceramic scintillator, and significantly improve a process economy.

Abstract: A method for processing a ceramic scintillator array, characterized in that, comprising the following steps: (a) forming, in a first direction, a predetermined number of straight first-direction through-cuts which are parallel to each other and spaced from each other on a scintillator substrate by using laser; (b) adequately filling the first-direction through-cuts with an adhesive and solidifying the adhesive; (c) forming, in a second direction. a predetermined number of second direction through-cuts which are parallel to each other at a predetermined interval on the scintillator substrate by using laser, wherein the second direction is perpendicular to the first direction; and (d) adequately filling the second direction through-cuts with the adhesive and solidifying the adhesive bond.

Abstract: The present disclosure is directed to a rapid process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics by using the combination of spark plasma primary sintering (SPS) and hot isostatic pressing secondary sintering.

Abstract: The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.

Abstract: The present invention discloses a general sample injector, comprising a sample injection port mechanism, a sample injector shell, a vaporizing chamber, a heater, a temperature control unit, a carrier gas channel, a septum purge channel, a flow splitting channel, a coolant channel, a multichannel flow control valve and a temperature control unit. The general sample injector, equivalent to a “programmed temperature vaporizer” injector combining splitting/no splitting with cold column head sample injection, gives full play to the advantages of various sample injection modes, overcomes a plurality of disadvantages, and has higher practicability and better flexibility.

Abstract: A GC-IMS system is disclosed. The system includes a sample transfer device. The sample transfer device connects the gas chromatograph to the reaction region and, the sample from the gas chromatograph is transferred to the reaction region by the sample transfer device. With the GC-IMS system, generation of sample molecular ion fragments can be avoided so that the spectrum is easily identified; moreover, the application field of the GC-IMS system is extended to a range of analysis of organic macromolecule samples which have a high polarity, are difficult to volatilize, and are thermally instable. On the other hand, the GC-IMS system overcomes the defect of ion destruction due to neutralization reaction among positive and negative ions so as to evade the detection.

Abstract: A method for preparing a carbon nanotube (CNT) film is provided, comprising: providing a growth chamber of CNTs, which includes an inlet end, an outlet end, and a first-level growth cavity and a second-level growth cavity, and the first-level growth cavity and the second-level growth cavity are in fluid communication between the inlet end and the outlet end; making precursor materials, which are used for forming CNTs, react in at least the first-level growth cavity of the growth chamber of CNTs to generate CNTs; and making a carrier gas flow into the growth chamber through the inlet end, and pass through the first-level growth cavity and the second-level growth cavity in sequence, wherein, a radial dimension of the first-level growth cavity in a flowing direction of the carrier gas is smaller than that of the second-level growth cavity at a junction between the first-level growth cavity and the second-level growth cavity, and a bubble blowing process is conducted with the precursor materials under the drive o

Abstract: A method for processing a ceramic scintillator array, characterized in that, comprising the following steps: (a) forming, in a first direction, a predetermined number of straight first-direction through-cuts which are parallel to each other and spaced from each other on a scintillator substrate by using laser; (b) adequately filling the first-direction through-cuts with an adhesive and solidifying the adhesive; (c) forming, in a second direction. a predetermined number of second direction through-cuts which are parallel to each other at a predetermined interval on the scintillator substrate by using laser, wherein the second direction is perpendicular to the first direction; and (d) adequately filling the second direction through-cuts with the adhesive and solidifying the adhesive bond.

Abstract: The present invention discloses a corona discharge assembly, an ion mobility spectrometer, an computer program and an computer readable storage medium. The corona discharge assembly includes: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and a trumpet-shaped front port which is conductive to forming a gathered electric field; multiple corona pins, in which on-off of a high voltage can be independently controlled, are installed at the center of the metal corona cylinder in an insulating manner. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.

Abstract: A method for preparing a carbon nanotube (CNT) film is provided, comprising: providing a growth chamber of CNTs, which includes an inlet end, an outlet end, and a first-level growth cavity and a second-level growth cavity, and the first-level growth cavity and the second-level growth cavity are in fluid communication between the inlet end and the outlet end; making precursor materials, which are used for forming CNTs, react in at least the first-level growth cavity of the growth chamber of CNTs to generate CNTs; and making a carrier gas flow into the growth chamber through the inlet end, and pass through the first-level growth cavity and the second-level growth cavity in sequence, wherein, a radial dimension of the first-level growth cavity in a flowing direction of the carrier gas is smaller than that of the second-level growth cavity at a junction between the first-level growth cavity and the second-level growth cavity, and a bubble blowing process is conducted with the precursor materials under the drive o

Abstract: An ion mobility spectrometer system is disclosed. In one aspect, the system includes a gas chromatograph, first and second ion mobility spectrometers, and a sample feed device that feeds a sample from the gas chromatograph to the first and second ion mobility spectrometers. The sample feed device includes an inner chamber, first and second sample outlets for outputting the sample from the gas chromatograph to the first and second ion mobility spectrometers, respectively, and a gas inlet for inputting a gas into the sample feed device. The system detects and identifies molecules at improved resolution and enhanced molecule information. The system detects positive and negative ions, interrelates positive-mode and negative-mode spectrums, and separates substances.

Abstract: The present disclosure is directed to a low cost sintering process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics, comprising uniaxial hot pressing primary sintering and hot isostatic pressing secondary sintering.

Abstract: The present disclosure is directed to a rapid process for the preparation of gadolinium oxysulfide having a general formula of Gd2O2S, referred to as GOS, scintillation ceramics by using the combination of spark plasma primary sintering (SPS) and hot isostatic pressing secondary sintering.

Abstract: The present invention discloses a corona discharge assembly, including: an ionization discharge chamber, wherein the ionization discharge chamber includes a metal corona cylinder, and the metal corona cylinder is provided with an inlet of a gas to be analyzed and an annular piece-shaped port which forms a non-uniform electric field with corona pins and is provided with a circular hole at the middle; a rotating shaft is installed on the cylinder wall of the metal corona cylinder in an insulating manner, the rotating shaft is vertical to the axial line of the metal corona cylinder, and a turntable provided with multiple corona pins at the outer edge is installed at the end part of the rotating shaft the axial line of the metal corona cylinder passes in parallel through the rotation plane of the turntable. The present invention further discloses an ion mobility spectrometer using the above-mentioned corona discharge assembly.