Characterization of glasses for 3He neutron spin filter cells

✍ Scribed by Y. Sakaguchi; H. Kira; T. Oku; T. Shinohara; J. Suzuki; K. Sakai; M. Nakamura; K. Suzuya; M. Arai; M. Takeda; S. Wakimoto; D. Yamazaki; S. Koizumi; Y. Endoh; K. Kakurai; Y. Arimoto; T. Ino; H.M. Shimizu; T. Kamiyama; K. Ohoyama; H. Hiraka; K. Tsutsumi; K. Yamada; L.J. Chang

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 289 KB
• Volume: 634
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2010.06.358

✦ Synopsis

Polarized 3 He neutron spin filters are suitable devices for polarizing neutrons at spallation neutron facilities because of the wide coverage in energy range and the large solid-angles. The glass cell plays an important role in the 3 He spin filters. In order to get good quality of glass cells, the investigation on the microscopic structure would be helpful. In this paper, we report on the results of X-ray diffraction for several glasses. We observed a correlation between the position of the first peak and the helium permeation velocity. We also observed a small difference in the diffraction curve among GE180 glasses with different thermal treatment. Desirable structure for 3 He spin filters is discussed.