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8 November 2001 Development of a magnetic lens and prism for cold neutrons and their application to neutron scattering experiments
Takayuki Oku; Tomohiro Adachi; Hiromi Sato; Chico Otani; Yoshiyuki Takizawa; Kenji Sakai; Hirohiko M. Shimizu; Keita Sasaki; Hirokatsu Iwasa; Takashi Kamiyama; Yoshiaki Kiyanagi; Takashi Ino; Michihiro Furusaka; Junichi Suzuki; Masahiro Hino; Seiji Tasaki; Tohru Ebisawa;
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Proceedings Volume 4509, Neutron Optics; (2001) https://doi.org/10.1117/12.448064
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States
Abstract
We have been developing a neutron lens and prism based on neutron refractive optics. As a neutron has a magnetic dipole moment, it is accelerated in a magnetic field gradient. Thus, we can control a neutron beam free from beam attenuation using the magnetic field gradient. Moreover, its spin dependence of the acceleration is profitable in the case of using the polarized neutron beam. The sextupole magnetic field functions as a focusing or defocusing lens for neutrons depending on the neutron spin states. The focusing and defocusing effects of a prototype sextupole magnet was experimentally studied. By combining focusing and defocusing functions of the sextupole magnet, we can control the neutron beam shape and divergence more flexibly. Adiabatic and nonadiabatic field connections make it possible to realize the magnetic doublet system. A quadrupole magnetic field functions as a neutron prism, which were experimentally confirmed. The neutron spin and energy dependence of the refracting power is applicable to an analysis of the neutron spin and energy. In this paper, the details of the experimental results of the magnetic devices are described and their applications in the neutron scattering experiment are discussed.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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Takayuki Oku, Tomohiro Adachi, Hiromi Sato, Chico Otani, Yoshiyuki Takizawa, Kenji Sakai, Hirohiko M. Shimizu, Keita Sasaki, Hirokatsu Iwasa, Takashi Kamiyama, Yoshiaki Kiyanagi, Takashi Ino, Michihiro Furusaka, Junichi Suzuki, Masahiro Hino, Seiji Tasaki, Tohru Ebisawa, "Development of a magnetic lens and prism for cold neutrons and their application to neutron scattering experiments", Proc. SPIE 4509, Neutron Optics, (8 November 2001); doi: 10.1117/12.448064; https://doi.org/10.1117/12.448064
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