Method
1. Review paper
2. Wavelength-resolved neutron transmission imaging experiment
3. Bragg edge
4. Single Bragg-edge profile fitting analysis
5. Superimposed Bragg-edges profile fitting analysis
6. xxxxx
7. xxxxx
8. Simultaneous multiple Bragg-edges profile fitting analysis
9. RITS (Rietveld-type whole transmission spectrum fitting analysis)
10. Bragg dip
11. Individual Bragg-dip profile fitting analysis
12. Multiple Bragg-dips wavelength pattern analysis
13. Inelastic neutron scattering analysis
14. Machine learning-assisted wavelength-dependent neutron imaging
1. Review paper
Published paper
H. Sato, Deriving quantitative crystallographic information from the wavelength-resolved neutron transmission analysis performed in imaging mode, Journal of Imaging, Volume 4, Issue 1 (2018) 7.
2. Wavelength-resolved neutron transmission imaging experiment
Method
- Steady neutron source + Velocity selector
- Steady neutron source + Double crystal monochrometer
- Steady neutron source + Tamaki energy-selective monochrometer
- Steady neutron source + Chopper
- Pulsed neutron source + Time-of-flight (TOF) spectroscopy
3. Bragg edge
Included information
- Crystal structure
- Crystalline phase
- Crystallographic texture
- Preferred orientation
- Crystallite size
- Crystal lattice plane spacing
- Macro-strain
- Broadening of distribution of crystal lattice plane spacing
- Micro-strain
- Dislocation information (density, arrangement and edge/screw character)
4. Single Bragg-edge profile fitting analysis
Published paper
H. Sato, T. Sato, Y. Shiota, T. Kamiyama, A. S. Tremsin, M. Ohnuma and Y. Kiyanagi, Relation between Vickers Hardness and Bragg-Edge Broadening in Quenched Steel Rods Observed by Pulsed Neutron Transmission Imaging, Materials Transactions, Volume 56, Number 8 (2015) 1147-1152.
Extracted information
- Crystal lattice plane spacing
- Macro-strain
- Broadening of distribution of crystal lattice plane spacing
5. Superimposed Bragg-edges profile fitting analysis
Published paper
H. Sato, A. Kusumi, Y. Shiota, H. Hayashida, Y. H. Su, J. D. Parker, K. Watanabe, T. Kamiyama and Y. Kiyanagi, Visualising martensite phase fraction in bulk ferrite steel by superimposed Bragg-edge profile analysis of wavelength-resolved neutron transmission imaging, ISIJ International, Volume 62, Number 11 (2022) 2319-2330.
Extracted information
- Crystalline phase fraction of ferrite phase and martensite phase
- Asymmetric distribution profile of crystal lattice plane spacing
6. xxxxx
7. xxxxx
8. Simultaneous multiple Bragg-edges profile fitting analysis
Published paper
H. Sato, K. Iwase, T. Kamiyama and Y. Kiyanagi, Simultaneous broadening analysis of multiple Bragg edges observed by wavelength-resolved neutron transmission imaging of deformed low-carbon ferritic steel, ISIJ International, Volume 60, Number 6 (2020) 1254-1263.
Extracted information
- Information relating to micro-strain
- Information relating to dislocation
- Information relating to crystallite size
9. RITS (Rietveld-type whole transmission spectrum fitting analysis)
Published paper
H. Sato, T. Kamiyama and Y. Kiyanagi, A Rietveld-Type Analysis Code for Pulsed Neutron Bragg-Edge Transmission Imaging and Quantitative Evaluation of Texture and Microstructure of a Welded α-Iron Plate, Materials Transactions, Volume 52, Number 6 (2011) 1294-1302.
H. Sato, T. Kamiyama, K. Iwase, T. Ishigaki and Y. Kiyanagi, Pulsed neutron spectroscopic imaging for crystallographic texture and microstructure, Nuclear Instruments and Methods in Physics Research Section A, Volume 651, Issue 1 (2011) 216-220.
H. Sato, T. Shinohara, R. Kiyanagi, K. Aizawa, M. Ooi, M. Harada, K. Oikawa, F. Maekawa, K. Iwase, T. Kamiyama and Y. Kiyanagi, Upgrade of Bragg edge analysis techniques of the RITS code for crystalline structural information imaging, Physics Procedia, Volume 43 (2013) 186-195.
H. Sato, K. Watanabe, K. Kiyokawa, R. Kiyanagi, K. Y. Hara, T. Kamiyama, M. Furusaka, T. Shinohara and Y. Kiyanagi, Further Improvement of the RITS Code for Pulsed Neutron Bragg-edge Transmission Imaging, Physics Procedia, Volume 88 (2017) 322-330.
H. Sato, M. Sato, Y. H. Su, T. Shinohara and T. Kamiyama, Improvement of Bragg-edge neutron transmission imaging for evaluating the crystalline phase volume fraction in steel composed of ferrite and austenite, ISIJ International, Volume 61, Number 5 (2021) 1584-1593.
Extracted information
- Crystal structure
- Crystalline phase
- Crystallographic texture
- Preferred orientation
- Crystallite size
10. Bragg dip
Included information
- Crystal orientation
- Mosaic block size/ Defect
- Mosaic angle
11. Individual Bragg-dip profile fitting analysis
Published paper
Y. Sakurai, H. Sato, N. Adachi, S. Morooka, Y. Todaka and T. Kamiyama, Analysis and Mapping of Detailed Inner Information of Crystalline Grain by Wavelength-Resolved Neutron Transmission Imaging with Individual Bragg-Dip Profile-Fitting Analysis, Applied Sciences, Volume 11, Issue 11 (2021) 5219.
Extracted information
- Small change of crystal orientation (< 0.4°)
- Mosaicity
- Crystal defect
12. Multiple Bragg-dips wavelength pattern analysis
Published paper
H. Sato, Y. Shiota, S. Morooka, Y. Todaka, N. Adachi, S. Sadamatsu, K. Oikawa, M. Harada, S. Y. Zhang, Y. H. Su, T. Kamiyama, M. Ohnuma, M. Furusaka, T. Shinohara and Y. Kiyanagi, Inverse pole figure mapping of bulk crystalline grains in a polycrystalline steel plate by pulsed neutron Bragg-dip transmission imaging, Journal of Applied Crystallography, Volume 50, Part 6 (2017) 1601-1610.
Extracted information
- Number of crystalline grains
- Crystal orientation of each grain
13. Inelastic neutron scattering analysis
Published paper
H. Sato, M. Miyoshi, R. S. Ramadhan, W. Kockelmann and T. Kamiyama, A new thermography using inelastic scattering analysis of wavelength-resolved neutron transmission imaging, Scientific Reports, Volume 13 (2023) 688.
Extracted information
- Debye-Waller factor
- Atomic displacement parameters
- Atomic dynamics
- Temperature
14. Machine learning-assisted wavelength-dependent neutron transmission imaging
Published paper
T. Kamiyama, K. Hirano, H. Sato, K. Ono, Y. Suzuki, D. Ito and Y. Saito, Application of machine learning methods to neutron transmission spectroscopic imaging for solid-liquid phase fraction analysis, Applied Sciences, Volume 11, Issue 13 (2021) 5988.
Extracted information
- Neutron transmission spectrum characterization with statistical-error robustness by unsupervised machine learning
- Spectral analysis for solid-liquid phase fraction by supervised machine learning