| 학회 | 한국재료학회 |
| 학술대회 | 2021년 가을 (11/24 ~ 11/26, 경주 라한호텔) |
| 권호 | 27권 2호 |
| 발표분야 | F. 광기능/디스플레이 재료 분과 |
| 제목 | Determination of Thermoluminescence Properties of MgB4O7:Dy3+, La3+ and Ho3+ for a Light Tracer |
| 초록 | The bullets flying with a light from the back are called “tracers”. The tracers are ignited by the combustion gas of the propellant to emit bright light that allows the shooter to visually trace the flight path. Therefore, it marks the firing point for allies to assist the shooter to hit the target quickly and accurately. The conventional tracers are constructed with a mixture of an oxidizing agent, a raw metal, and an organic fuel. Upon ignition, the inside of the gun can be easily contaminated by the by-products, which could lead to the firearm failure during long-term shooting. Moreover, there is a fire risk such as forest fires due to residual flames at the impact site. Therefore, it is necessary to develop non-combustion type luminous material, but still using the heat generated from the propellant, so-called “thermoluminescence (TL)”. This study aims to investigate the comparison of the TL emission of Dy3+, La3+ and Ho3+ doped MgB4O7 phosphors prepared by solid state reaction. The crystal structure of the samples was determined by X-ray diffraction and matched with the standard pattern of MgB4O7. Luminescence of various dose (200, 400 and 1000Gy) gamma irradiated Dy3+, La3+ and Ho3+ (at different concentrations of 5, 10, 15, 20%) doped MgB4O7 have been recorded using luminance/color meter. The TL yellowish (CIE x = 0.401 ~ 0.486, y = 0.410 ~ 0.488) emission became stronger as the temperature increased and the total gamma-ray dose increased. |
| 저자 | Jinu Park1, Nakyung Kim1, Jiwoon Choi1, Jaehyuk Koh1, Hee Sik Chin2, Duck Hyeong Jung2, 신병하1 |
| 소속 | 1KAIST, 2POONGSAN R&D INSTITUTE |
| 키워드 | <P>Thermoluminescence; MgB<SUB>4</SUB>O<SUB>7</SUB>; Tracer</P> |
