@article{oai:repo.qst.go.jp:00045191,
 author = {Hiraga, Junko and Nakamura, Shogo and Uchida, Yoshihiro and Kikuchi, Masato and Kurata, Shingo and Ozaki, Yuichi and Kamada, Shintaro and Takashima, Takeshi and Uchihori, Yukio and Kitamura, Hisashi and Tawara, Hiroko and 内堀 幸夫 and 北村 尚 and 俵 裕子},
 issue = {1/2},
 journal = {Nuclear Instruments & Methods in Physics Research Section A},
 month = {Apr},
 note = {Charge-coupled devices (CCDs) are widely used in X-ray astronomy as a focal plane detector for X-rays up to 10 keV. For future X-ray space missions, thick CCDs are being developed to improve the detection efficiency of high energy X-rays beyond 10 keV. We propose a new method to produce a novel multi-collimator using a barium phosphate glass, BP-1, which was originally developed as a solid state track detector. The BP-1 collimator allows the realization of small through-holes, several hundred nano-meters in radius. We performed the first experiment of this project in which a xenon beam of 80MeV=u was used to irradiate the 1.3 mm-thick-BP-1 glass. After an etching process, we obtained the first prototype BP-1 collimator. There were a large number of tapered pinholes which are randomly distributed and with extremely high aspect ratio. Taking X-ray photographs demonstrated that the first prototype has a capability of fine collimation for X-rays up to 20 keV.
r 2006 Elsevier B.V. All rights reserved.},
 pages = {236--239},
 title = {A novel multi-collimator using BP-1 glass and an application for X-ray CCDs},
 volume = {573},
 year = {2007}
}