Abstract
We built a new cryostat to apply a current-biased kinetic inductance detector (CB-KID) for conducting neutron transmission imaging of room-temperature samples under pulsed neutrons. A Wood’s metal alloy of melting temperature 75.2 °C was placed at room temperature to inspect the measurement system at J-PARC. Since one of the four phases of Wood’s metal is a fine Cd-rich needle phase (width \(\sim\) 25 μm and length \(\sim\) 5 mm), it is suitable for observing fine mosaic structure selectively by neutron imaging. The spatial resolution of the CB-KID imager was estimated as \(\sim 10 {\upmu }\text{m}\) by using a Gd Siemens-star pattern. The CB-KID system is useful to conduct transmission imaging for various materials rather easily at room temperature.
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Acknowledgements
This work is partially supported by Grant-in-Aid for Scientific Research (A) (JP21H04666) and for Early-Career Scientists (JP21K14566, JP23K13690) from JSPS. The neutron experiments at J- PARC were conducted under the support of MLF project program (No. 2021P0501).
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TI headed this project and wrote the main manuscript. TDV and HS conducted experiment, data analysis and prepared analysis program. KA proposed an imaging plan from material science aspect. TO, KO, MH, KS contributed to establish neutron-experiment environment. KMK, SYS, and MMT prepared the hardware and software of the acquisition system. TK, MM, and SK gave the operating principle of the detector. All authors reviewed the manuscript.
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Ishida, T., Vu, T.D., Shishido, H. et al. Neutron Transmission CB-KID Imager Using Samples Placed at Room Temperature. J Low Temp Phys 214, 152–157 (2024). https://doi.org/10.1007/s10909-023-03030-9
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DOI: https://doi.org/10.1007/s10909-023-03030-9