Abstract: In order to provide an equipment that permits easy elimination of interference ions even in a low resolution mass spectrometer, the isotope mass number information and the isotope presence ratio information for each element are stored, and processing is done as is shown in FIG. 1 using such information and the measurement results, and the amount of target elemental ions is calculated by calculating and eliminating the amount of interference caused by other elemental isotopes to the target element. Because of this, when carrying out element analysis using a mass spectrometer with a relatively low resolution, the user can easily obtain the measurement result of the amount of any target elemental ions.

Abstract: In order to provide an equipment that permits easy elimination of interference ions even in a low resolution mass spectrometer, the isotope mass number information and the isotope presence ratio information for each element are stored, and processing is done as is shown in FIG. 1 using such information and the measurement results, and the amount of target elemental ions is calculated by calculating and eliminating the amount of interference caused by other elemental isotopes to the target element. Because of this, when carrying out element analysis using a mass spectrometer with a relatively low resolution, the user can easily obtain the measurement result of the amount of any target elemental ions.

Abstract: A plasma ion source mass spectrometer comprising a plasma ion source 40 for ionizing a sample with a plasma; a mass filter 60 for subjecting the sample ionized by the plasma ion source 40 to mass spectrometry; and an interface unit 50 having an orifice formed in a cone 52, 54 for introducing the sample ionized by the plasma ion source 40 into the mass filter 60. Further the plasma ion source mass spectrometer comprises a first cooler 49 for cooling a plasma generator 41 of the plasma ion source 40 and a plasma generating power source 44; and a second cooler 56 independent of the first cooler 49, for cooling the interface unit 50 and for raising the temperature by changing the cooling efficiency so as to reduce the influence of deposition on the interface unit 50. With this construction, the temperature of the interface unit can be controlled without changing the analysis sensitivity of the plasma ion source mass spectrometer.

Abstract: Irregular mechanical imperfections caused by constituent parts of a monochromator in connection with wavelength setting are compensated by calibrating the monochromator according to the present invention. A whole measurable spectral range in the monochromator is divided into a plurality of spectral regions by a plurality of calibration wavelengths. Errors between apparent wavelengths set theoretically and their true wavelengths are obtained with respect to the respective calibration wavelengths. Error functions in connection with the respective spectral regions are calculated on the basis of the array of the obtained errors. An element to be detected in a sample is measured under a wavelength the error of which has been compensated for by use of an error function in a spectral region associated with a wavelength to be detected.

Abstract: A reclining angle adjustment device for use with a reclining seat includes an intermediate gear plate having an outer gear, a first arm having an inner gear meshing with the outer gear, an angularly movable shaft having concentric and eccentric portions on which the intermediate gear plate and the first arm are angularly movably mounted, respectively, a second arm supporting the angularly movable shaft thereon, a release lever for unlocking the intermediate gear plate from the second arm for rough adjustment of a reclining angle, a control handle for turning the angularly movable shaft for fine adjustment of the reclining angle, a pin secured to the second arm by a pin bracket and having a groove, a spiral spring having an inner and engaging in the groove for imposing a turning force produced at an outer end thereof on the intermediate gear plate, and a hook plate angularly movably mounted on the pin for transmitting the turning force of the spiral spring to the intermediate gear plate through the hook plate,

Abstract: A seat position control mechanism with a neutral position return mechanism for a front seat of a vehicle such as two-door sedan or hard top sedan incorporates a memory plate disposed outside the locking teeth of the locking plate of the seat slide adjusting device, a rockable lever journaled with the maneuverable shaft rockably secured to the locking lever, and connecting means connected from the rockable lever to the back rest of the front seat, in addition to the ordinary seat slide adjusting device. The rockable lever is always urged by the rotating force of the torsion spring in the seat locking direction so that the maneuverable shaft can be locked or unlocked regardless of the rockable lever. Thus, the entire mechanism is low bulky, compact and light with simple construction, and the front seat can be smoothly slid without interference with the rockable lever and other members.