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http://dx.doi.org/10.5369/JSST.2003.12.1.016

Growth of Li2B4O7 Single Crystal and Its Thermoluminescent Properties  

Park, Kang-Soo (Department of Physics & RCDAMP, Pusan National University)
Ahn, Jung-Keun (Department of Physics & RCDAMP, Pusan National University)
Kim, Dong-Jin (Department of Physics & RCDAMP, Pusan National University)
Hwang, Yoon-Hwae (Department of Physics & RCDAMP, Pusan National University)
Kim, Hyung-Kook (Department of Physics & RCDAMP, Pusan National University)
Park, Myeong-Hwan (Department of Radiologic Technology, Daegu Health College)
Kang, Hee-Dong (Department of Physics, Kyungpook National University)
Kim, Do-Sung (Devision of Science Education, Daegu University)
Publication Information
Journal of Sensor Science and Technology / v.12, no.1, 2003 , pp. 16-23 More about this Journal
Abstract
Thermoluminescent properties of $Li_2B_4O_7$ single crystal grown by Czochralski method have been investigated. The high quality $Li_2B_4O_7$ single crystal without core was obtained at rotation speed of 10 rpm for seed crystal and pulling speed below $0.18\;mm{\cdot}h^{-1}$. The structure of $Li_2B_4O_7$ single crystal was classified as tetragonal by XRD analysis. The TL glow curve was composed with three overlapped peaks which can be easily deconvoluted and the TL response of $Li_2B_4O_7$ single crystal TLD to X-ray radiation is linear within the range of $50\;mGy{\sim}1.5\;Gy$. Activation energies of three TL glow peaks analyzed by the various heating rates method and PL spectrum were 0.93, 1.78 and 2.25 eV, respectively.
Keywords
$Li2B_4O_7$ single crystal; Czochralski method; TLD;
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