@article{oai:u-ryukyu.repo.nii.ac.jp:02012394,
 author = {Ueda, Tatsuki and Fujioka, Shinsuke and Nozaki, Shinya and Chen, Yen-wei and Nishimura, Hiroaki},
 issue = {3},
 journal = {Journal of Physics : Conference Series},
 month = {Aug},
 note = {Imaging of nuclear reaction region is important to clarify heating mechanism in a fast-ignition plasma. The nuclear reaction region can be identified by hard x-ray and neutron images, which are emanated from the heated region. We proposed a novel penumbral imaging that is suitable for imaging quanta having strong penetrating power, such as hard x ray and neutron. Using multiple penumbral apertures arranged with M-sequence leads to two orders of magnitude higher detection efficiency than that with a single aperture. In addition, a heuristic method was introduced to a image reconstruction procedure for reducing artifacts caused by noise in a penumbral image. A proof-of-principle experiment indicates that the proposed imaging is superior to the conventional one., 論文},
 title = {Penumbral imaging with multi-penumbral-apertures and its heuristic reconstruction for nuclear reaction region diagnostics},
 volume = {244},
 year = {2010}
}