Plastic scintillating fiber and its manufacturing method

A method for manufacturing a plastic scintillating fiber,

• the plastic scintillating fiber comprising:
• an outermost peripheral layer containing a fluorescent substance that emits scintillation light when it is irradiated with at least one of neutron radiation and heavy-particle radiation;
• a core disposed inside the outermost peripheral layer and containing at least one type of fluorescent substance that absorbs the scintillation light and wavelength-converts the absorbed light into light having a wavelength longer than that of the absorbed light;
• and
• a cladding layer covering an outer peripheral surface of the core and having a refractive index lower than that of the core, and
• the method comprising:
• a process of manufacturing a preform by inserting a second cylindrical body for the cladding layer into a first cylindrical body for the outermost peripheral layer, and inserting a rod for the core into the second cylindrical body;
• and
• a process of drawing the preform while heating the preform.

A method for manufacturing a plastic scintillating fiber,

• the plastic scintillating fiber comprising:
• an outermost peripheral layer containing a fluorescent substance that emits scintillation light when it is irradiated with at least one of neutron radiation and heavy-particle radiation;
• a core having a high refractive index, disposed inside the outermost peripheral layer, and containing at least one type of fluorescent substance that absorbs the scintillation light and wavelength-converts the absorbed light into light having a wavelength longer than that of the absorbed light;
• and
• a cladding layer covering an outer peripheral surface of the core and having a refractive index lower than that of the core, wherein
• the outermost peripheral layer is coated on a surface of the cladding layer.