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Development of radiation-resistant optical fiber for application to observation and laser spectroscopy under high radiation dose
| Content Provider | Scilit |
|---|---|
| Author | Ito, Chikara Naito, Hiroyuki Nishimura, Akihiko Ohba, Hironori Wakaida, Ikuo Sugiyama, Akira Chatani, Keiji |
| Copyright Year | 2014 |
| Description | In the Fukushima Daiichi Nuclear Power Station, it is necessary to survey the locations and conditions of fuel debris inside reactor pressure vessels or primary containment vessels under water and radiation environment in preparation for removing fuel debris. An optical fiber is well known for features such as signal transmission, light weight, superior insulation performance, water resistance and electromagnetic noise resistance. These features allow the optical fiber to simplify the instrumentation systems for in-vessel inspection, as long as provide that the optical fiber can be used under high radiation dose environment. The radiation resistance of an optical fiber was improved by increasing the amount of hydroxyl up to 1000 ppm in pure silica fiber. The improved optical fibers were irradiated with γ-ray up to 1 × $10^{6}$ Gy using a$ ^{60}$Co source. They indicated a large peak around 600 nm and a peak tail from ultraviolet region, but no large absorption in infrared region except a hydroxyl absorption peak of 945 nm. We have confirmed that the optical fiber containing 1000 ppm hydroxyl has enough radiation resistance for radiation-induced transmission losses, and the infrared imaging is effective for observation under high radiation doses. |
| Related Links | http://www.tandfonline.com/doi/pdf/10.1080/00223131.2014.924883?needAccess=true |
| Ending Page | 950 |
| Page Count | 7 |
| Starting Page | 944 |
| ISSN | 00223131 |
| e-ISSN | 18811248 |
| DOI | 10.1080/00223131.2014.924883 |
| Journal | Journal of Nuclear Science and Technology |
| Issue Number | 7 |
| Volume Number | 51 |
| Language | English |
| Publisher | Informa UK Limited |
| Publisher Date | 2014-05-06 |
| Access Restriction | Open |
| Subject Keyword | Journal: Journal of Nuclear Science and Technology Nuclear Energy and Engineering Optical Fiber Laser-induced Breakdown Spectroscopy Radiation Resistance Radiation-induced Transmission Loss Gamma Ray Irradiation Reactor Pressure Vessel Primary Containment Vessel Pure Silica Hydroxyl Radiation Damage |
| Content Type | Text |
| Resource Type | Article |
| Subject | Nuclear and High Energy Physics Nuclear Energy and Engineering |
