摘要:
The present invention relates to an MCP unit or the like having a structure intended to achieve a desired time response characteristic, without depending on a limitation imposed by a channel diameter of MCP. The MCP unit comprises the MCP for releasing secondary electrons internally multiplied in response to incidence of charged particles, an anode arranged in a position where the secondary electrons reach, and an acceleration electrode arranged between the MCP and the anode. In particular, the acceleration electrode includes a plurality of openings which permit passing of the secondary electrons migrating from the MCP toward the anode. Further, the acceleration electrode is arranged such that the shortest distance B between the acceleration electrode and the anode is longer than the shortest distance A between the MCP and the acceleration electrode. Thus, an FWHM of a detected peak appearing in response to the incidence of the charged particles is remarkably shortened.
摘要:
A wiring substrate section 2, which has a wiring substrate 20 with through holes 20c each filled with a conductive member 21 serving as a conduction path for guiding a detected signal, is installed between a radiation detecting section 1 comprised of a scintillator 10 and a PD array 15, and a signal processing element 30 for processing the detected signals outputted from the PD array 15. Each through hole 20c in the wiring substrate 20 is formed so that, with respect to a predetermined plane perpendicular to a conduction direction from an input surface 20a to an output surface 20b, an aperture of the through hole 20c in that plane is not on an extension along the conduction direction of an aperture of the through hole 20c in the input surface 20a and so that the through hole 20c cannot be seen through from the input surface 20a to the output surface 20b. This obtains the wiring substrate capable of suppressing transmission of radiation, and a radiation detector using it.
摘要:
A wiring substrate section 2, which has a wiring substrate 20 with through holes 20c each filled with a conductive member 21 serving as a conduction path for guiding a detected signal, is installed between a radiation detecting section 1 comprised of a scintillator 10 and a PD array 15, and a signal processing element 30 for processing the detected signals outputted from the PD array 15. Each through hole 20c in the wiring substrate 20 is formed so that, with respect to a predetermined plane perpendicular to a conduction direction from an input surface 20a to an output surface 20b, an aperture of the through hole 20c in that plane is not on an extension along the conduction direction of an aperture of the through hole 20c in the input surface 20a and so that the through hole 20c cannot be seen through from the input surface 20a to the output surface 20b. This obtains the wiring substrate capable of suppressing transmission of radiation, and a radiation detector using it.
摘要:
A semiconductor device is provided that includes a semiconductor layer, first element isolation regions defining a high breakdown voltage transistor forming region in the semiconductor layer, second element isolation regions defining a low voltage driving transistor forming region in the semiconductor layer, high breakdown voltage transistors formed in the high breakdown voltage transistor forming region, low voltage driving transistors formed in the low voltage driving transistor forming region, and offset dielectric layers for alleviating an electric field of the high breakdown voltage transistors, wherein the high breakdown voltage transistors have gate dielectric layers formed by a CVD method.
摘要:
A blind rivet fastener has a portion of a rivet sleeve or a portion of a mandrel head provided with at least one of a groove, protrusion, or ridge for engaging a component, such as a cap, to be mounted on the fastener.
摘要:
Substituted heterocyclic derivatives represented by the formula (I) ##STR1## wherein R, R.sup.1, R.sup.2, R.sup.3, R.sup.4, Q.sup.1, Q.sup.2, Q.sup.3, Q.sup.4, X and Y are as defined, including, specifically, the compound (E)-3-[3-[3-(2-methoxymethyl-8,8-dimethyl-4-nonen-6-ynyl)phenoxymethyl]phenyl]thiophene, exhibit squalene epoxidase inhibiting activity and are useful in the treatment or prophylaxis of hypercholesterolemia, hyperlipidemia and arteriosclerosis.
摘要:
[Object] A fatty acid-related polyunsaturated compound can be selectively purified using an industrially operable successive method under moderate conditions. [Content] A highly purified fatty acid-related polyunsaturated compound is obtained by a process comprising steps of forming a complex with silver on account of the high degree of unsaturation of the fatty acid-related polyunsaturated compound, isolating the complex from other fats on account of the hydrophilicity of the complex and then applying dissociating procedures to the complex to obtain the fatty acid-related polyunsaturated compound as a target substance on account of the hydrophobicity of the fatty acid-related polyunsaturated compound. As to the procedures for dissociation, addition of a dissociating agent and reduction of silver are disclosed. As to the dissociating agent, various compounds which produce insoluble composition with silver other then water are disclosed. Furthermore, an apparatus appropriately used to carry out this method is also disclosed.
摘要:
An apparatus for discriminating a machining state from a non-machining state in a machine tool wherein a workpiece is machined with a cutting tool or grinder, comprising plural vibration sensors including at least one acoustic-emission sensor, which detect vibrations of different frequency bands, respectively, which are produced during machining of the workpiece by the tool. A discriminating device judges that the workpiece is being machined by the tool when levels of output signals generated from at least two of the vibration sensors are higher than respective predetermined threshold levels, and judges that the workpiece is not being machined by the tool when the level of an output signal generated from less than two of the vibration sensors is higher than a predetermined threshold level. Also disclosed is a method for discrimination between the machining and non-machining states.
摘要:
A method for preparing an optically active carboxylic acid ester of the formula (I): ##STR1## wherein X is a hydrogen atom or a fluorine atom, and * indicates an asymmetric carbon atom, which is an A.alpha.-isomer having an (S)-configuration on both the acid and alcohol moieties, or rich in said A.alpha.-isomer, which method comprises crystallizing said A.alpha.-isomer from a solution of an A-isomer of the formula (I) having an (S)-configuration on the acid moiety in the presence of a crystal that is of substantially pure A.alpha.-isomer and in the presence or absence of a basic catalyst.
摘要:
A method of manufacturing a group 13 nitride crystal includes a crystal growth process to form the group 13 nitride crystal by growing the group 13 nitride crystal having a hexagonal crystal structure from a seed crystal which is a gallium nitride crystal having a hexagonal crystal structure in which a length “L” in a c-axis direction is 9.7 mm or more, and a ratio L/d of the length “L” to a crystal diameter “d” in a c-plane is larger than 0.813. The crystal growth process includes a process of forming an outer periphery containing a {10-10} plane and an outer periphery containing a {10-11} plane at side surfaces of the group 13 nitride crystal, and forming an outer periphery containing a {0001} plane at a bottom surface of the group 13 nitride crystal.