Application of polyimide films as a nuclear track detector (1): A systematic study of track registration sensitivity

Tamon Kusumoto; Yutaka Mori; Satoshi Kodaira; Masato Kanasaki; Rémi Barillon; Tomoya Yamauchi

doi:10.1016/j.apradiso.2023.111100

Application of polyimide films as a nuclear track detector (1): A systematic study of track registration sensitivity

Appl Radiat Isot. 2024 Feb:204:111100. doi: 10.1016/j.apradiso.2023.111100. Epub 2023 Nov 15.

Authors

Tamon Kusumoto¹, Yutaka Mori², Satoshi Kodaira³, Masato Kanasaki², Rémi Barillon⁴, Tomoya Yamauchi²

Affiliations

¹ National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan. Electronic address: Kusumoto.tamon@qst.go.jp.
² Graduate School of Maritime Sciences, Kobe University, 5-1-1 Fukaeminami-machi, Higashinada-ku, 658-0022 Kobe, Japan.
³ National Institutes for Quantum Science and Technology (QST), 4-9-1 Anagawa, Inage-ku, 263-8555 Chiba, Japan.
⁴ Institute Pluridisiplinaire Hubert Curien, 23 rue du Loess, 67037 Strasbourg Cedex 2, France.

PMID: 38011803
DOI: 10.1016/j.apradiso.2023.111100

Abstract

This paper reports the variation of track registration sensitivity as a function of the stopping power of heavy ions in UPILEX-S® films, which is known as the most radiation tolerant polyimide (PI). The detection thresholds in the stopping power for etch pit formation are determined as 4,000, 4,100, 4,800, and 5600 keV/μm for ⁴⁰Ar, ⁸⁴Kr, ¹³²Xe and ²³⁸U ions, respectively. Furthermore, we investigate the latent track structure in two kinds of PI films (UPILEX-S® and Kapton) by means of FT-IR spectroscopy. At the similar stopping power value, the radiation chemical yields (G value) for heavier ions are lower than those of lighter ions. This is due to the difference of the radial dose distribution for low and high velocity ions.

Keywords: Heavy ion; Radial dose distribution theory; Track detector; UPILEX.