Abstract: A process for manufacture of a radiation image storage panel having a stimulable europium activated cesium halide phosphor layer is performed by the step of vaporizing an evaporation source (europium activated cesium halide phosphor or materials yielding the phosphor) by heating, and the step of depositing the vaporized phosphor or materials to form the stimulable phosphor layer on a substrate in an evaporation-deposition apparatus, in which the vaporizing and depositing steps are performed at a pressure of 0.05 to 10 Pa and controlled to perform the deposition at a rate of 1.5 to 13 mg/cm2·min.

Abstract: A radiation image storage panel composed of a substrate and a phosphor film of a stimulable phosphor which is composed of a mother component and an activator element and is formed by vapor deposition, is preferred to have a relationship of a molar ratio of activator element/mother component in an optionally determined one position on the phosphor film and a molar ratio of activator element/mother component in an optionally determined different position on the phosphor film satisfies the condition of 0.1?Ra/Rb?10 [Ra means a molar ratio of activator element/mother component in an optionally determined one position of the phosphor film and Rb means a molar ratio of activator element/mother component in an optionally determined different position of the phosphor film].

Abstract: The vacuum deposition device includes a vacuum deposition chamber, a vacuum evacuator for evacuating an inside of the chamber, at least one first evaporator which evaporates a first film forming, at least one second evaporator which evaporates a second film forming material. One of the first and second evaporators which is closer to the substrate is spaced apart from the substrate in a vertical direction by 100 to 300 mm. The substrate, the first evaporator and the second evaporator are installed at positions, which satisfy a condition of an expression (1): 0.3?L1/L2?50. L1 is a distance in a vertical direction from a horizontal plane of a first or second evaporation port of the first or second evaporator to a surface of the substrate, and L2 is the shortest distance between the first evaporation port and the second evaporation port.

Abstract: A radiation image storage panel has a phosphor layer formed by a gas phase-accumulation method, in which the phosphor layer is composed of a lower sub-layer of a spherical crystal structure and an upper sub-layer of a columnar crystal structure.

Abstract: An improvement of a process for preparing a radiation image storage panel by heating an evaporation source containing a phosphor in a deposition apparatus to produce its vapor and depositing the vapor on a substrate to form a phosphor layer resides in that the heating and depositing are performed under such condition that an inert gas is introduced into the apparatus at a flow rate of Vn satisfying the following condition, while the apparatus is being evacuated, 0.002?Vn/Vc?20 [Vn is a flow rate in terms of mL/min., and Vc is a volume of the apparatus in terms of L].

Abstract: A radiation image storage panel composed of a support and a phosphor film of a stimulable europium activated cesium bromide phosphor having the formula (I): CsBr.MIX?aMIIX?2+bMIIIX?3:zEu ??(I) [MI is an alkali metal element; MII is an alkaline earth metal element or a divalent metal element; MIII is a rare earth element or a trivalent metal element; each of X, X? and X? is a halogen; and 0?a<0.5, 0?b<0.5, 0?c<0.5, and 0<z<1.0] is prepared by the steps of depositing on the support a prismatic europium activated cesium bromide phosphor crystal layer on the support in a gas phase; and heating the crystal layer at a temperature of <300 ° C. but >50° C. for 1 to 8 hours in an inert gas atmosphere which may contain a small amount of oxygen or hydrogen.

Abstract: A radiation image storage panel having a phosphor layer formed by a gas phase-accumulation method, in which wherein the phosphor layer is composed of an alkali metal halide stimulable phosphor activated by an activator, and the crystal lattice in the phosphor layer has a lattice distortion in the range of 0.035 to 0.30%.

Abstract: In a radiation image storage panel composed of a phosphor layer produced by vapor phase deposition, the phosphor layer is composed of an europium activated cesium halide stimulable phosphor and exhibits an ultraviolet light-excited emission spectrum satisfying the condition of:

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored, the stimulating rays causing the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light emitted from the exposed linear area of the sheet is received with a line sensor comprising photoelectric conversion devices arrayed along each of a length direction of the linear area of the stimulable phosphor sheet and a direction normal to the length direction. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. Operation processing is performed on outputs of the photoelectric conversion devices, which outputs have been obtained at respective positions of movement and correspond to an identical site on the sheet.

Abstract: A stimulable phosphor sheet is prepared by applying an electron beam to a stimulable phosphor or its source in a vacuum to vaporize a phosphor or its source and depositing the vaporized phosphor or source on the support, under the condition that the electron beam is applied to the stimulable phosphor or source at an accelerating voltage of 1.5 kV to 5.0 kV. The stimulable phosphor or its source is preferably in the form of a solid having a relative density of 80% to 98%.

Abstract: In a method for preparing a radiation image storage panel comprising a support and a stimulable europium-activated cesium halide phosphor layer formed on the support by heating an europium-activated cesium halide phosphor or sources for production of the europium-activated cesium halide phosphor under reduced pressure to evaporate the phosphor or phosphor source and depositing the evaporated phosphor or phosphor source on a substrate, the deposition is preferably performed under the condition that a relationship between a molar ratio of europium to cesium in the deposited stimulable phosphor layer and a temperature of the substrate satisfies all of the formulas (1) to (3):

Abstract: A radio-conductive material which exhibits conductivity upon exposure to radiations is formed of alcohol-soluble nylon and inorganic material having radiation absorbing power.

Abstract: An europium activated cesium bromide phosphor having the formula of CsBr:xEu [0<x≦0.2], in which a relationship between an emission intensity (IE) of Eu2+ and a coloring intensity (IF) at F(Br−) center satisfies the condition of 0.2≦IE×IF, and/or in which a ratio of Eu2+ to Eu3+ contained in the phosphor in terms of emission intensity satisfies the condition of 5×10−5≦Eu3+/Eu2+≦0.1 gives an increased stimulated emission amount and is favorably employed for producing a radiation image storage sheet.

Abstract: A radiation image storage panel composed of a support and a phosphor film of a stimulable europium activated cesium bromide phosphor having the formula (I):

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored, the stimulating rays causing the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light emitted from the exposed linear area of the sheet is received with a line sensor comprising photoelectric conversion devices arrayed along each of a length direction of the linear area of the stimulable phosphor sheet and a direction normal to the length direction. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. Operation processing is performed on outputs of the photoelectric conversion devices, which outputs have been obtained at respective positions of movement and correspond to an identical site on the sheet.

Abstract: A method of reading a radiation image converting panel whereby pillar-shaped stimulatable fluorescent substances formed on a supporting member by deposition are excited by irradiating excitation light to a surface of the radiation image converting panel on which radiation energy has been stored and recorded by irradiation of the radiation; emitting the radiation energy as photostimulated fluorescent light; and reading out the photostimulated fluorescent light photoelectrically from both surfaces of the radiation image converting panel.

Abstract: A radiation image storage panel composed of a substrate and a phosphor film of a stimulable phosphor which is composed of a mother component and an activator element and is formed by vapor deposition, is preferred to have a relationship of a molar ratio of activator element/mother component in an optionally determined one position on the phosphor film and a molar ratio of activator element/mother component in an optionally determined different position on the phosphor film satisfies the condition of 0.1≦Ra/Rb≦10 [Ra means a molar ratio of activator element/mother component in an optionally determined one position of the phosphor film and Rb means a molar ratio of activator element/mother component in an optionally determined different position of the phosphor film].

Abstract: A radiation image storage panel composed of a substrate and a phosphor film of an europium activated cesium bromide phosphor containing an europium element at an atomic ratio in the range of 0.0001 to 0.01 in terms of Eu/Cs and having been formed by vapor deposition shows specifically high sensitivity. The phosphor film is favorably deposited on the substrate by electron beam-evaporation method using plural evaporation sources.

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of a stimulable phosphor sheet, on which a radiation image has been stored, the stimulating rays causing the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light emitted from the exposed linear area of the sheet is received with a line sensor comprising photoelectric conversion devices arrayed along each of a length direction of the linear area of the stimulable phosphor sheet and a direction normal to the length direction. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. Operation processing is performed on outputs of the photoelectric conversion devices, which outputs have been obtained at respective positions of movement and correspond to an identical site on the sheet.

Abstract: Stimulating rays produced by a line light source are linearly irradiated onto an area of one surface of a stimulable phosphor sheet, on which a radiation image has been stored. The stimulating rays cause the sheet to emit light in proportion to an amount of energy stored thereon during its exposure to radiation. Light, which is emitted from the linear area of the one surface of the sheet exposed to the linear stimulating rays or from a linear area of the other surface corresponding to the linear area of the one surface, is received with a line sensor comprising photoelectric conversion devices arrayed along a length direction of the linear area of the sheet. The sheet is moved with respect to the line light source and the line sensor and in a direction different from the length direction of the linear area of the sheet. A distributed index lens array comprising distributed index lenses arrayed along the length direction of the linear area of the sheet is located between the sheet and the line sensor.