Quantification of Oxygen and Carbon in Calcium Targets for Reliable Ca$(p,pα)$ Measurements
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arXiv
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| Format: | Preprint |
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2025
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| _version_ | 1866915696573677568 |
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| author | Tanaka, Junki Matsumura, Riku Miyagawa, Taichi |
| author_facet | Tanaka, Junki Matsumura, Riku Miyagawa, Taichi |
| contents | Reliable extraction of Ca$(p,pα)$ cross sections requires accurate correction for oxygen and carbon impurities in calcium targets. In this work, the relative amounts of these light elements in $^{40,42,44,48}$Ca targets are determined using 65-MeV proton elastic scattering, where the Ca/Mylar yield ratios provide a direct measure of the corresponding O and C atomic ratios. These experimentally determined ratios are then applied to the 392-MeV $(p,pα)$ spectra to subtract the O and C contributions in a fully data-driven manner. The method does not rely on assumptions about absolute contamination levels or reaction-model calculations, and enables a consistent and reliable determination of Ca$(p,pα)$ yields across the calcium isotopic chain. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2512_22438 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Quantification of Oxygen and Carbon in Calcium Targets for Reliable Ca$(p,pα)$ Measurements Tanaka, Junki Matsumura, Riku Miyagawa, Taichi Nuclear Experiment Reliable extraction of Ca$(p,pα)$ cross sections requires accurate correction for oxygen and carbon impurities in calcium targets. In this work, the relative amounts of these light elements in $^{40,42,44,48}$Ca targets are determined using 65-MeV proton elastic scattering, where the Ca/Mylar yield ratios provide a direct measure of the corresponding O and C atomic ratios. These experimentally determined ratios are then applied to the 392-MeV $(p,pα)$ spectra to subtract the O and C contributions in a fully data-driven manner. The method does not rely on assumptions about absolute contamination levels or reaction-model calculations, and enables a consistent and reliable determination of Ca$(p,pα)$ yields across the calcium isotopic chain. |
| title | Quantification of Oxygen and Carbon in Calcium Targets for Reliable Ca$(p,pα)$ Measurements |
| topic | Nuclear Experiment |
| url | https://arxiv.org/abs/2512.22438 |