High Power Laser Science and Engineering, 2015, 3 (4): 04000001, Published Online: Jan. 7, 2016  

Using LiF crystals for high-performance neutron imaging with micron-scale resolution Download: 914次

Author Affiliations
1 Institute for Academic Initiatives, Suita, Osaka University, 565-0871, Japan
2 Joint Institute for High Temperatures, Russian Academy of Sciences, Izhorskaja Street 13/19, Moscow, Russia
3 Quantum Beam Science Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan
4 PPC and Graduate School of Engineering, Suita, Osaka University, 565-0871, Japan
5 Quantum Beam Science Center, Japan Atomic Energy Agency, Kyoto 619-0215, Japan
6 Nippon SOKEN, Inc., Iwaya 14, Shimohasumi, Nishio, Aichi 445-0012, Japan
7 The Graduate School for the Creation of New Photonics Industries, Hamamatsu, Shizuoka 431-1202, Japan
Abstract
This paper describes an overview of our recent discovery – clear demonstration that LiF crystals can be efficiently used as a high-performance neutron imaging detector based on optically stimulated luminescence of color centers generated by neutron irradiation. It is shown that the neutron images we have obtained are almost free from granular noise, have a spatial resolution of ~5.4 μm and a linear response with a dynamic range of at least 103. The high contrast and good sensitivity of LiF crystals allow us to distinguish two holes with less than 2% transmittance difference. We propose to use such detectors in areas where high spatial resolution with high image gradation resolution is needed, including diagnostics of different plasma sources such as laser and z-pinch produced plasmas.

A. Faenov, M. Matsubayashi, T. Pikuz, Y. Fukuda, M. Kando, R. Yasuda, H. Iikura, T. Nojima, T. Sakai, M. Shiozawa, R. Kodama, Y. Kato. Using LiF crystals for high-performance neutron imaging with micron-scale resolution[J]. High Power Laser Science and Engineering, 2015, 3(4): 04000001.

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