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BEHAVIOR OF PET FOIL USED AS BEAM EXTRACTION WINDOW DURING IRRADIATION AT ATMOSPHERIC PRESSURE

Y. BARBOTTEAU

Department of Quantum Science and Energy Engineering, Tohoku University, Miyagi-ken, Sendai 980-8579, Japan

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K. ISHII

Department of Quantum Science and Energy Engineering, Tohoku University, Miyagi-ken, Sendai 980-8579, Japan

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K. MIZUMA

Department of Quantum Science and Energy Engineering, Tohoku University, Miyagi-ken, Sendai 980-8579, Japan

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H. YAMAZAKI

Department of Quantum Science and Energy Engineering, Tohoku University, Miyagi-ken, Sendai 980-8579, Japan

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S. MATSUYAMA

Department of Quantum Science and Energy Engineering, Tohoku University, Miyagi-ken, Sendai 980-8579, Japan

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T. SAKAI

Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma-ken, 370-1292, Japan

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T. SATOH

Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma-ken, 370-1292, Japan

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, and

T. KAMIYA

Takasaki Radiation Chemistry Research Establishment, Japan Atomic Energy Research Institute, Takasaki, Gunma-ken, 370-1292, Japan

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https://doi.org/10.1142/S0129083504000057Cited by:3 (Source: Crossref)

Abstract

Since biological or biomedical studies by nuclear microscopy are limited by irradiation damage, we developed an in-air system in order to cool down the biological samples by convection. The behavior of the beam extraction window is an important parameter of our system. Then, we investigated the behavior of a polyethylene teraphtalate (PET) thin-film used as beam extraction window during in-air irradiation by STIM (Scanning Transmission Ion Microscopy) and RBS (Rutherford Backscattering Spectrometry) methods. We found that it is better to flow helium than air atmosphere because in-air irradiation enhances the degradation of the PET film.

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