Development of a method to measure trace level of uranium and thorium in scintillation films
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arXiv
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| Main Authors: | , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914834167103488 |
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| author | Ichimura, K. Chiba, K. Gando, Y. Ikeda, H. Kishimoto, Y. Kurasawa, M. Nemoto, K. Sakaguchi, A. Takaku, Y. Sakakieda, Y. |
| author_facet | Ichimura, K. Chiba, K. Gando, Y. Ikeda, H. Kishimoto, Y. Kurasawa, M. Nemoto, K. Sakaguchi, A. Takaku, Y. Sakakieda, Y. |
| contents | We have established a method to measure picograms-per-gram (pg g$^{-1}$) levels of $^{238}$U and $^{232}$Th in scintillation films by combining the dry ashing method and inductively coupled plasma mass spectrometry. Trace amounts of $^{238}$U and $^{232}$Th were measured in up to 2~g of the scintillation film with almost 100% collection efficiency. This paper details the experimental procedure, including the pretreatment of the samples and labware, detection limit of the method, collection efficiencies of $^{238}$U and $^{232}$Th, and measurement of $^{238}$U and $^{232}$Th in a polyethylene naphthalate film. This method is also applicable to $^{238}$U and $^{232}$Th measurements in other low-background organic materials for rare event search experiments. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_04901 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Development of a method to measure trace level of uranium and thorium in scintillation films Ichimura, K. Chiba, K. Gando, Y. Ikeda, H. Kishimoto, Y. Kurasawa, M. Nemoto, K. Sakaguchi, A. Takaku, Y. Sakakieda, Y. Instrumentation and Detectors We have established a method to measure picograms-per-gram (pg g$^{-1}$) levels of $^{238}$U and $^{232}$Th in scintillation films by combining the dry ashing method and inductively coupled plasma mass spectrometry. Trace amounts of $^{238}$U and $^{232}$Th were measured in up to 2~g of the scintillation film with almost 100% collection efficiency. This paper details the experimental procedure, including the pretreatment of the samples and labware, detection limit of the method, collection efficiencies of $^{238}$U and $^{232}$Th, and measurement of $^{238}$U and $^{232}$Th in a polyethylene naphthalate film. This method is also applicable to $^{238}$U and $^{232}$Th measurements in other low-background organic materials for rare event search experiments. |
| title | Development of a method to measure trace level of uranium and thorium in scintillation films |
| topic | Instrumentation and Detectors |
| url | https://arxiv.org/abs/2405.04901 |