Volume 2, 2014

2nd Japan–China Joint Workshop on Positron Science (JWPS2013), December 20–23, 2013, Tsukuba, Japan

ISBN: 978-4-86348-445-0

» Foreword

The 2nd Japan–China Joint Workshop on Positron Science (JWPS2013) was held on December 20–23, 2013 at Tsukuba, Japan. More than 50 researchers from Japan and China participated in the workshop in which 27 talks and 23 posters were presented.

The workshop aimed to gather together scientists working in Japan and China at the forefront of research on positron science in order to share information on the most recent progress in relevant fields. The workshop successfully provided the attendees a precious opportunity for the exchange of ideas and stimulating discussion on a wide range of subjects involving fundamental aspects of positron science, applications as well as instrumentation.

We are very grateful to the many researchers who attended the workshop and presented interesting papers. The contributions published in these conference proceedings clearly symbolize the recent rapid-progress and intensified activity in positron science in Asia.

Kenji Ito / Nagayasu Oshima
Organizing and Publication Committee, JWPS2013
National Institute of Advanced Industrial Science and Technology (AIST)

Theory and related experiments on physics and chemistry

011001

Assessment of several calculation methods for positron lifetime

Wenshuai Zhang, Jiandang Liu, Jie Zhang, Shijuan Huang, Jun Li, Bangjiao Ye

PDF (557 KB)

011002

Effect of constraining the source lifetime parameter during least-square-fit analysis on positron lifetime measurements

Masato Yamawaki, Kenji Ito, Yoshinori Kobayashi, Kanehisa Hattori, Yoshihiro Watanabe

PDF (537 KB)

011003

Positronium bubble oscillation in room temperature ionic liquids

Tetsuya Hirade

PDF (515 KB)

011004

Energy loss of positrons below the excitation threshold in Ar gas

Yosuke Sano, Yasushi Kino, Toshitaka Oka, Tsutomu Sekine

PDF (467 KB)

011005

Estimation of relativistic effects on loosely bound states of positronic alkali atoms

Takuma Yamashita, Ayumi Irisawa, Yasushi Kino

PDF (472 KB)

Metals and semiconductors

011101

Cu precipitates in hydrogen ion irradiated Fe–0.3%Cu alloy investigated by positron annihilation spectroscopy

Shuoxue Jin, Xingzhong Cao, Peng Zhang, Eryang Lu, Liping Guo, RunSheng Yu, Baoyi Wang

PDF (617 KB)

011102

Annealing of a pre-assembled tungsten positron moderator by direct electron bombardment

Atsushi Yabuuchi, Nagayasu Oshima, Hidetoshi Kato, Brian E. O’Rourke, Atsushi Kinomura, Toshiyuki Ohdaira, Yoshinori Kobayashi, Ryoichi Suzuki

PDF (693 KB)

011103

In situ observation of damage evolution in polycarbonate under ion irradiation with positrons

Hidetsugu Tsuchida, Hironori Tsutsumi, Masafumi Akiyoshi, Takeo Iwai

PDF (826 KB)

Polymers, membranes, and porous media

011201

Correlation study between the rheological property and the free volume for ethylene vinyl acetate copolymer under melt extrusion

Yong Zhang, Zhi Wang, Chenhui Li, Zhe Chen, Pengfei Fang

PDF (553 KB)

011202

Microstructure and surface state of plasma-treated high-density polyethylene elucidated by energy-tunable positron annihilation and water contact angle measurements

Zhe Chen, Zhi Wang, Qiuming Fu, Zhibin Ma, Pengfei Fang, Chunqing He

PDF (446 KB)

011203

Study of self-assembly for mechanochemically-milled saponite nanoparticles

Kazuomi Numata, Kiminori Sato, Koichiro Fujimoto

PDF (957 KB)

011204

Positron annihilation study of silica films templated by a cationic surfactant

Bangyun Xiong, Wenfeng Mao, Xiuqin Tang, Kenji Ito, Chunqing He

PDF (728 KB)

011205

Comparison study of mesoporous thin films characterized by low-energy positron lifetime spectroscopy and flow-type ellipsometric porosimetry

Shigeru Yoshimoto, Kenji Ito, Hiroyuki Hosomi, Yoshihiro Takai

PDF (672 KB)

011206

Investigation on defects of Sb doped SnO₂ thin films by positron annihilation

Wenfeng Mao, Bangyun Xiong, Qichao Li, Yawei Zhou, Kenji Ito, Chunqing He

PDF (588 KB)

011207

The effect of curing agent content on photodegradation of epoxy coating studied by positron annihilation

Fuwei Liu, Mingxi Yin, Bangyun Xiong, Feng Zheng, Wenfeng Mao, Zhe Chen, Chunqing He, Xipo Zhao, Pengfei Fang

PDF (1.5 MB)

011208

The surface structure and hydrophobic recovery of poly-dimethylsioxane insulator after Ar plasma treatment

Feng Zheng, Chunqing He, Pengfei Fang, Zhe Chen, Shaojie Wang, Jianguo Wang, Xiangyang Peng, Zhihai Xu

PDF (530 KB)

011209

Study of reversibility of self-assembly in saponite layered nanoparticles

Kazuomi Numata, Kiminori Sato

PDF (614 KB)

011210

Subnanoporosity development in hydrocarbon-siliconoxide hybrid PECVD films elucidated by variable-energy positron annihilation

Kenji Ito, Toshitaka Oka, Chunqing He, Yoshinori Kobayashi

PDF (1.1 MB)

Advances in analytical techniques and instrumentation

011301

Production of positrons via pair creation from LCS gamma-rays and application to defect study in bulk materials

Fuminobu Hori, Kouji Ishii, Taishi Ishiyama, Akihiro Iwase, Shuji Miyamoto, Mititaka Terasawa

PDF (865 KB)

011302

Electron gun using coniferous carbon nano-structure

Hidetoshi Kato, Brian E. O’Rourke, Ryoichi Suzuki

PDF (1.2 MB)

011303

Development of energy-tunable positronium beams employing the photodetachment of positronium negative ions

Koji Michishio, Yasuyuki Nagashima

PDF (942 KB)

011304

Development of a vertical slow positron beamline at AIST

Brian E. O’Rourke, Nagayasu Oshima, Atsushi Kinomura, Ryoichi Suzuki

PDF (1.4 MB)

011305

Doppler-broadening of annihilation radiation spectroscopy under high magnetic field using a longitudinally spin-polarized slow positron beam

Masaki Maekawa, Hongjun Zhang, Hui Li, Yuki Fukaya, Atsuo Kawasuso

PDF (915 KB)

011306

Development of combinatorial defect analysis with an intense positron microprobe

Nagayasu Oshima, Yasuhiro Kamada, Hideo Watanabe, Atsushi Kinomura, Ryoichi Suzuki