Diffusion experiment in lithium ionic conductors with the radiotracer of 8Li: From micro- to nano-diffusion

Sun Chan Jeong, Ichiro Katayama, Hirokane Kawakami, Yutaka Watanabe, Hironobu Ishiyama, Nobuaki Imai, Yoshikazu Hirayama, Hiroari Miyatake, Masao Sataka, Hiroyuki Sugai, Satoru Okayasu, Shin Ichi Ichikawa, Katsuhisa Nishio, Shinichi Mitsuoka, Takamitsu Nakanoya, Takashi Hashimoto, Takanori Hashimoto, Masahito Yahagi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Citations (Scopus)


We have developed a radiotracer method for diffusion studies in lithium ionic conductors, by using, as the tracer, the short-lived α-emitting radioisotope of 8Li from TRIAC (Tokai Radioactive Ion Accelerator Complex). In the method, we measured α-particles coming out of the sample of interest and have found that the time-dependent yields of α-particle from the diffusing 8Li primarily implanted is a good measure of the Li diffusion in the sample. The method has been successfully applied to measure the lithium diffusion coefficients in a typical defect-mediated lithium ionic conductor of LiGa, well demonstrating that the method is very efficient to measure the diffusion in the micro-meter regime per second. Further development, as an extension of the present method, was proposed to measure the diffusion on the nanoscale in lithium ionic conductors.

Original languageEnglish
Title of host publicationPerspectives in Nuclear Physics - Proceedings of the 6th Japan-Italy Symposium on Heavy-Ion Physics
Number of pages6
Publication statusPublished - 2009 Jul 21
Event6th Japan-Italy Symposium on Heavy-Ion Physics - Tokai, Japan
Duration: 2008 Nov 112008 Nov 15

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Other6th Japan-Italy Symposium on Heavy-Ion Physics


  • Diffusion coefficient
  • Lithium ionic conductor
  • Micro-diffusion
  • Nano-diffusion
  • Radiotracer method
  • Short-lived radioactive ion beam

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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