DOAJ Open Access 2025

Trapping and release of deuterium in helium-induced tungsten fuzz at low temperature

K. Saito D. Hwangbo M. Miyamoto H. Yoshida R. Sasaki +2 lainnya

Abstrak

The release of deuterium (D) atoms from a nanostructure ‘fuzz’ tungsten (W) after a sequential plasma irradiation of helium (He) and D was explored. Thermal desorption spectroscopy revealed that more than 60% of total D amount was already released at >423 K. A sophisticated measurement with an aberration-corrected scanning TEM combined with electron energy-loss spectrometer (STEM-EELS) directly showed the trapping of D atoms into He bubbles after the plasma irradiation and the release of D from the He bubbles at elevated temperature at 423 K. The He bubbles containing D were characterized by (i) relatively large volume and (ii) small He energy-loss shift below 2 eV. It is suggested that the shifts in the energy-loss peaks of He and D could be used as indicators of D absorption within He bubbles.

Topik & Kata Kunci

Nuclear engineering. Atomic power

Penulis (7)

K. Saito

D. Hwangbo

M. Miyamoto

H. Yoshida

R. Sasaki

S. Murakami

M. Sakamoto

Format Sitasi

APA MLA BibTeX

Saito, K., Hwangbo, D., Miyamoto, M., Yoshida, H., Sasaki, R., Murakami, S. et al. (2025). Trapping and release of deuterium in helium-induced tungsten fuzz at low temperature. https://doi.org/10.1016/j.nme.2024.101859

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Informasi Jurnal

Tahun Terbit: 2025
Sumber Database: DOAJ
DOI: 10.1016/j.nme.2024.101859
Akses: Open Access ✓