摘要:
An electron beam detector detects a peak of a spectrum, and when a peak position is deviated from a reference position on the electron beam detector, a controller for controlling an electron beam position on the electron beam detector is used to correct a deviation. An electron energy loss spectrum is measured while controlling correction a deviation between an electron beam position on a specimen, and a peak position of the spectrum, and a spectrum measuring with the electron beam detector.
摘要:
A comparator compares a control voltage obtained by amplifying the difference between an output voltage of a DC voltage outputting circuit and a reference voltage, with the voltage between both ends of a sense resistor. The result of this comparison is input to the reset terminal "R" of a flip-flop circuit as a reset signal. For example, if a light load is connected to the DC voltage outputting circuit, the control voltage to be output to the comparators via an amplifier will drop and the output voltage of the DC outputting circuit will rise. Therefore, a threshold voltage is provided to another comparator to which the control voltage is input, and a set pulse signal is not output to the set terminal "S" of the flip-flop circuit if the control voltage is not equal to or higher than the threshold voltage. As a result, the average value of the control voltage can be raised by the value of the threshold voltage, and the voltage rising of the DC voltage outputting circuit can be suppressed in comparison with the conventional system, thereby improving a load regulation.
摘要:
A disk loading mechanism includes disk cartridge positioning pins integrally formed in the base of a chassis portion thereof. In addition, at one side of the base of the chassis, a hooked portion is provided for securing a printed ciruit board to a lower side of the chassis. In addition, the base plate of the chassis mounts a damper fox smoothly controlling slider movement in a recess such that an overall height of the unit is reduced. According to such construction, reliable operation is assured with a reduced number of parts, such that manufacturing complexity and costs can be significantly reduced.
摘要:
A specimen cartridge fashioned of a good thermal conductor, with an outer frame being fashioned of heat insulating material, and with a connecting rod being fashioned of a poor thermal conductor. A temperature distribution of the specimen is uniform and a temperature drift is reduced, with a thermal expansion of a specimen cartridge tilting rod not affecting the tilting angle, thereby making it possible to perform various highly accurate observations and measurements with an electron microscope.
摘要:
A method of forming by CVD technique a layer of material with good uniformity and reproducibility on the surfaces of a plurality of substrates supported within the reaction chamber. The feature of the invention is that a gaseous mixture containing a reaction gas is supplied into the reaction chamber from the inlet of the reaction chamber and the auxiliary gas nozzle provided between the inlet and the exhaust in a predetermined control manner. Moreover, part of the gaseous mixture within the reaction chamber is sampled from the gas flow for the measurement of the concentration of the reaction gas, and from the measured results is determined the rate of gas supply from the auxiliary gas nozzle.
摘要:
For implementing a stop control which extracts a current from a fuel cell and consumes a cathode side oxygen at a system stop, the current extraction from the fuel cell is ended in a state that a certain quantity of oxygen smaller than when the current extraction is started remains on a cathode side of the fuel cell. With this, the hydrogen movement to the cathode side after the system stop can be effectively suppressed and thereby a cathode internal hydrogen concentration at the system start can be kept low, thus making it possible to properly process the cathode side hydrogen at the system start.
摘要:
Deterioration at the start-up and deterioration during the leaving period are suppressed in a good balance. As a system shutdown process, a controller (30) causes consumption of the air (oxygen) present in an oxidant electrode of a fuel cell stack (1) (oxygen consumption control). Further, after the termination of the oxygen consumption control, the controller (30) performs control to set a medium pressure hydrogen valve (13) and a hydrogen pressure adjustment valve (14) in a closed state. The controller (30) thereby causes hydrogen to be held in a passage located between the medium pressure hydrogen valve (13) and the hydrogen pressure adjustment valve (14). During a system shutdown period, a predetermined amount of hydrogen (medium pressure hydrogen) held in the hydrogen supply passage (L1) at a position between the medium pressure hydrogen valve (13) and the hydrogen pressure adjustment valve (14) can be supplied to the fuel electrode of the fuel cell stack (1) through a bypass passage (L2).
摘要:
A position sensor cord includes a hollow insulator formed of a restorable rubber or a restorable plastic, and two linear resistive members. Each of the two linear resistive members includes a linear insulator and a conductive layer provided around a circumference of the linear insulator. The conductive layer is formed of a conductive rubber or a conductive plastic. The two linear resistive members are arranged in no electrical contact with each other and along an inner surface of the hollow insulator. One of the two linear resistive members may be replaced with one linear conductive member.
摘要:
A composition of conductive rubber which does not adhere each other in uncross-linked state is provided to exhibit good workability. The composition of conductive rubber including carbon as conductive additive in a base rubber to be cross-linkable by electron beam radiation includes 5 to 40% by weight of an adhesion inhibitor of uncross-linked rubber into a base rubber which is selected from ethylene ethyl acrylic acid copolymer resin (EEA), ethylene vinyl acetate copolymer resin (EVA), ethylene methyl acrylate copolymer resin (EMA), and ethylene acrylic acid copolymer resin (EAA).
摘要:
There is provided an element mapping unit, scanning transmission electron microscope, and element mapping method that enable to acquire an element mapping image very easily. On the scanning transmission electron microscope, the electron beam transmitted through an object to be analyzed enters into the element mapping unit. The electron beam is analyzed of its energy into spectrum by an electron spectrometer and an electron energy loss spectrum is acquired. Because the acceleration voltage data for each element and window data for 2-window method, 3-window method or contrast tuning method are already stored in a database and accordingly the spectrum measurement is carried out immediately even when an element to be analyzed is changed to another, the operator can confirm a two-dimensional element distribution map immediately. Besides, because every electron beam that enters into an energy filter passes through the object point, aberration strain in the electron spectrometer can be minimized and higher energy stability can be achieved. As a result, drift of the electron energy loss spectrum acquired by analyzing the electron beam into spectrum can be minimized and element distribution with higher accuracy can be acquired.