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  4. Applied Quantum Physics Laboratory (former Sensing Device Laboratory) Material function analysis and evaluation

Applied Quantum Physics Laboratory (former Sensing Device Laboratory) Material function analysis and evaluation

Staff & Contact

Educational Staff Prof. Takayuki Yanagida
Associate Prof. Noriaki Kawaguchi
Associate Prof. Daisuke Nakauchi
Assistant Prof. Takumi Kato
Contact TEL: +81-743-72-6144
URL https://mswebs.naist.jp/LABs/yanagida/index-e.html

Education and Research Activities in the Laboratory

  1. Measurements of ionizing radiations (for example, X-rays, γ-rays, charged particles and neutrons) using scintillators and dosimeters are our main focus of research.

  2. Key areas of our studies are radiation physics, inorganic luminescent materials and photo-physics. It is preferable if the prospective student has a good understanding of physics described in the textbooks below.
    ・ Solid state physics: Introduction to Solid State Physics (C. Kittel)
    ・ Basic quantum mechanics: Principles of Quantum Mechanics (P. A. M. Dirac)

  3. In our group, students are exposed to a wide range of experiments every day, and they learn and achieve experimental techniques to measure various ionizing radiations using inorganic phosphor materials. Typically, these phosphors (inorganic single crystals, ceramics and glasses) can be synthesized in the lab, and a variety of radiation-induced effects are characterized over a wide range of optical regions from VUV to NIR over a wide temperature range, 4-800 K. Successful students may be involved in collaborative research with major university and industrial partners in Japan and overseas.

Research Themes

1. Development of new scintillator materials and detectors for advanced radiation measurements

We synthesize inorganic crystal, ceramic and glass scintillators and characterize the fundamental scintillation properties. Successful materials will be further studied for state-of-the-art detectors.

2. Development of new dosimeter materials (OSL, TSL and RPL)

As for scintillator research, we synthesize inorganic crystals, ceramics and glasses for novel dosimeter materials. Our facilities offer comprehensive studies of different types of dosimetry. (OSL, TSL, and RPL)

3. Development of other phosphor materials

Besides radiation measurements, we also develop other types of phosphor materials, e.g., long persistent luminescence and stress luminescence.

4. Ionizing radiation detector applications

Promising samples are further advanced to develop detector instruments for medical, security and high energy physics applications.

Fig.1 Crystal, ceramic, and glass materials under UV excitation
Fig.2 Outline of studies in this group, from material synthesis to radiation detectors

Recent Research Papers and Achievements

  1. Study of rare-earth-doped scintillators, T. Yanagida, Opt. Mat., 35 1987-1992 (2013).
  2. Comparative study of ceramic and single crystal Ce:GAGG scintillator, T. Yanagida, K. Kamada, Y. Fujimoto, H. Yagi, T. Yanagitani, Opt. Mat., 35 2480-2485 (2013).
  3. Development of X-ray induced afterglow characterization system, T. Yanagida, Y. Fujimoto, T. Ito, K. Uchiyama, K. Mori, Appl. Phys. Exp., 7 062401 (2014).