Characterizations of heavy ion irradiated PET membranes

Takahashi, Shuichi*; Yoshida, Masaru; Asano, Masaharu; Notomi, Mitsuo*; Nakagawa,Tsutomu*

Nuclear Instruments and Methods in Physics Research B, 217(3), p.435 - 441, 2004/05

https://doi.org/10.1016/j.nimb.2003.10.017

Various characterization were used to study the effect of heavy ion irradiation on a poly(ethylen terephthalate)(PET) membrane. My study was followed using some dynamic and thermal measurements with the aim to undestand the chemical change in the material by heavy ion irradiation. The anyalyese included DMA, tensile measurement, DSC and micro-FT-IR. The overall structure change in the PET polymer was investigated as a function of the Xe ion fluence in the range from 310 to 310ions/cm. Based on some mechanical measurements such as the tensile analysis and dynamic test, the heavy ion irradiated PET membranes exhibited a significant change in cross-linking. I believe that the secondary electron induced by collision between the irradiated ion and the constituent atoms of the membrane material form the cross-linking. The polymer chain scission and structure degradations are expected to result at higher ion fluence. Also, a slight change in the structure such as amorphization has been shown by DSC and the micro-FT-IR test.

Amorphization from the quenched high-pressure phase in III-V and II-VI compounds

Mori, Yuki*; Kato, Sayuri*; Mori, Hiroko*; Katayama, Yoshinori; Tsuji, Kazuhiko*

Review of High Pressure Science and Technology, 7, p.353 - 355, 1998/03

http://ci.nii.ac.jp/naid/10002690121

The temperature dependence of phase transitions in GaSb, AlSb, GaAs, GaP, InAs, ZnSe, and CdTe are studied by X-ray diffraction measurements under pressure upto 30 GPa at temperatures of 90-300K. The phase transitions depend on paths in a pressure-temperature phase diagram. The structure of the recovered phase after decompression depends on the ionicity in bonding: amorphous for small ionicity, the stable zincblende structure for large ionicity, and microcrystalline or moderate ionicity. These results are discussed by using a configuration-coordinate model.

Amorphization in aluminum oxide induced by ion irradiation

Abe, Hiroaki; Yamamoto, Shunya; Naramoto, Hiroshi

Nuclear Instruments and Methods in Physics Research B, 127-128, p.170 - 175, 1997/00

https://doi.org/10.1016/S0168-583X(96)00880-4

no abstracts in English

The TEM-Accelerators Facility at JAERI-Takasaki and its application to materials science

Abe, Hiroaki; Naramoto, Hiroshi; Hojo, Kiichi; Furuno, Shigemi

JAERI-Research 96-047, 18 Pages, 1996/09

JAERI-Research-96-047.pdf:0.96MB

no abstracts in English

Effects of concurrent irradiation with ions and electrons in Si and Ge and their in-situ observations

Abe, Hiroaki; Kinoshita, Chiken*

Ionics, 20(7), p.39 - 48, 1994/07

no abstracts in English

Effects of concurrent irradiation with ions and electrons on ion-induced amorphization in silicon

Abe, Hiroaki; Kinoshita, Chiken*; P.R.Okamoto*; L.E.Rehn*

Annu. Rep., HVEM LAB., Kyushu Univ., 0(17), p.19 - 20, 1993/00

no abstracts in English