学術雑誌論文

学術雑誌論文

Nature Communications. 2024, 15(1), p. 5365

Single-shot laser-driven neutron resonance spectroscopy for temperature profiling

Nature Research

英語

2024-07-12

https://doi.org/10.1038/s41467-024-49142-y

Lan Z., Arikawa Y., Mirfayzi S.R., et al. Single-shot laser-driven neutron resonance spectroscopy for temperature profiling. Nature Communications 15, 5365 (2024); https://doi.org/10.1038/s41467-024-49142-y.

The temperature measurement of material inside of an object is one of the key technologies for control of dynamical processes. For this purpose, various techniques such as laser-based thermography and phase-contrast imaging thermography have been studied. However, it is, in principle, impossible to measure the temperature of an element inside of an object using these techniques. One of the possible solutions is measurements of Doppler brooding effect in neutron resonance absorption (NRA). Here we present a method to measure the temperature of an element or an isotope inside of an object using NRA with a single neutron pulse of approximately 100 ns width provided from a high-power laser. We demonstrate temperature measurements of a tantalum (Ta) metallic foil heated from the room temperature up to 617 K. Although the neutron energy resolution is fluctuated from shot to shot, we obtain the temperature dependence of resonance Doppler broadening using a reference of a silver (Ag) foil kept to the room temperature. A free gas model well reproduces the results. This method enables element(isotope)-sensitive thermometry to detect the instantaneous temperature rise in dynamical processes.

This article is licensed under a Creative Commons Attribution 4.0 International License.

97269

Single-shot laser-driven neutron resonance spectroscopy for temperature profiling

Nature Research

英語

2024-07-12

Nature Communications

15

1

5365

https://doi.org/10.1038/s41467-024-49142-y

https://hdl.handle.net/11094/97269