A method for detecting a radioactive source moving on a linear path substantially parallel to an alignment of N detectors. The method includes: forming N×N.sub.t pulse counting values M.sub.i,t (i=1, 2, . . . , N and t=1, 2, . . . , N.sub.t) from N×N.sub.t detection signals delivered by the N detectors in the form of a succession over time of N.sub.t sets of N signals simultaneously detected by the N detectors over a same duration Δt, a pulse counting value representing a number of pulses detected by a detector over a duration Δt; and computing, using a computer: a set of N.sub.t correlation products R.sub.t, a static mean R of the N×N.sub.t counting values, a correlation condition for each correlation product R.sub.t.

A method for detecting a radioactive source moving on a linear path substantially parallel to an alignment of N detectors. The method includes: forming N×N.sub.t pulse counting values M.sub.i,t (i=1, 2, . . . , N and t=1, 2, . . . , N.sub.t) from N×N.sub.t detection signals delivered by the N detectors in the form of a succession over time of N.sub.t sets of N signals simultaneously detected by the N detectors over a same duration Δt, a pulse counting value representing a number of pulses detected by a detector over a duration Δt; and computing, using a computer: a set of N.sub.t correlation products R.sub.t, a static mean R of the N×N.sub.t counting values, a correlation condition for each correlation product R.sub.t.

A radiation image acquisition system includes a radiation source that outputs radiation toward an object, a scintillator that has an input surface to which the radiation output from the radiation source and transmitted through the object is input, converts the radiation input to the input surface into scintillation light, and is opaque to the scintillation light, an image capturing means that includes a lens portion focused on the input surface and configured to image the scintillation light output from the input surface and an image capturing unit configured to capture an image of the scintillation light imaged by the lens portion and outputs radiation image data of the object A, and an image generating unit that generates a radiation image of the object based on the radiation image data output from the image capturing means.

A radiation image acquisition system includes a radiation source that outputs radiation toward an object, a scintillator that has an input surface to which the radiation output from the radiation source and transmitted through the object is input, converts the radiation input to the input surface into scintillation light, and is opaque to the scintillation light, an image capturing means that includes a lens portion focused on the input surface and configured to image the scintillation light output from the input surface and an image capturing unit configured to capture an image of the scintillation light imaged by the lens portion and outputs radiation image data of the object A, and an image generating unit that generates a radiation image of the object based on the radiation image data output from the image capturing means.

A device includes sample tray units, a sample tray transporting unit, a sample tray handling unit, and a sample tray radiation stage unit. The sample tray units are configured to load samples. The sample tray transporting unit is configured to carry a sample tray unit to a radiation room. The sample tray handling unit is between the sample tray transporting unit and the sample tray radiation stage unit, and is configured to transfer the sample tray unit on the sample tray transporting unit to the sample tray radiation stage unit or return the sample tray unit on the sample tray radiation stage unit to the sample tray transporting unit. The sample tray radiation stage unit is configured to carry the sample tray unit and move the samples to be irradiated in the sample tray unit to a particle beam radiation area to receive radiation.

A device includes sample tray units, a sample tray transporting unit, a sample tray handling unit, and a sample tray radiation stage unit. The sample tray units are configured to load samples. The sample tray transporting unit is configured to carry a sample tray unit to a radiation room. The sample tray handling unit is between the sample tray transporting unit and the sample tray radiation stage unit, and is configured to transfer the sample tray unit on the sample tray transporting unit to the sample tray radiation stage unit or return the sample tray unit on the sample tray radiation stage unit to the sample tray transporting unit. The sample tray radiation stage unit is configured to carry the sample tray unit and move the samples to be irradiated in the sample tray unit to a particle beam radiation area to receive radiation.

A radiation detecting attachment comprising four radiation detectors configured to detect radiation from an object of detection W, attached removably to a working machine, wherein the radiation detecting attachment is supported by the working machine movably when the radiation detecting attachment is attached to the working machine, and is supported by an arm body of the working machine swingably, and a distance between the radiation detectors and the other radiation detectors is changeable. This makes it possible to use the radiation detectors efficiently and in a versatile manner.

A radiation detecting attachment comprising four radiation detectors configured to detect radiation from an object of detection W, attached removably to a working machine, wherein the radiation detecting attachment is supported by the working machine movably when the radiation detecting attachment is attached to the working machine, and is supported by an arm body of the working machine swingably, and a distance between the radiation detectors and the other radiation detectors is changeable. This makes it possible to use the radiation detectors efficiently and in a versatile manner.

According to the present invention, a laminate is disposed on a spacer in a bottle. The laminate comprises: a sample layer that includes a sample sheet; an upper scintillator layer (upper member); and a lower scintillator layer (lower member). Each of the upper and lower scintillator layers is made of a plastic scintillator material. The sample sheet is manufactured by laminating a carrier such as filter paper having a radioactive substance adhered thereto.

According to the present invention, a laminate is disposed on a spacer in a bottle. The laminate comprises: a sample layer that includes a sample sheet; an upper scintillator layer (upper member); and a lower scintillator layer (lower member). Each of the upper and lower scintillator layers is made of a plastic scintillator material. The sample sheet is manufactured by laminating a carrier such as filter paper having a radioactive substance adhered thereto.