直接测量宇宙射线碳和氧光谱从10 GEV $/n $到2.2 TEV $/N $，并使用国际空间站上的量热电子望远镜

论文标题

直接测量宇宙射线碳和氧光谱从10 GEV $/n $到2.2 TEV $/N $，并使用国际空间站上的量热电子望远镜

Direct Measurement of the Cosmic-Ray Carbon and Oxygen Spectra from 10 GeV$/n$ to 2.2 TeV$/n$ with the Calorimetric Electron Telescope on the International Space Station

论文作者

Adriani, O., Akaike, Y., Asano, K., Asaoka, Y., Bagliesi, M. G., Berti, E., Bigongiari, G., Binns, W. R., Bongi, M., Brogi, P., Bruno, A., Buckley, J. H., Cannady, N., Castellini, G., Checchia, C., Cherry, M. L., Collazuol, G., Ebisawa, K., Fuke, H., Gonzi, S., Guzik, T. G., Hams, T., Hibino, K., Ichimura, M., Ioka, K., Ishizaki, W., Israel, M. H., Kasahara, K., Kataoka, J., Kataoka, R., Katayose, Y., Kato, C., Kawanaka, N., Kawakubo, Y., Kobayashi, K., Kohri, K., Krawczynski, H. S., Krizmanic, J. F., Link, J., Maestro, P., Marrocchesi, P. S., Messineo, A. M., Mitchell, J. W., Miyake, S., Moiseev, A. A., Mori, M., Mori, N., Motz, H. M., Munakata, K., Nakahira, S., Nishimura, J., de Nolfo, G. A., Okuno, S., Ormes, J. F., Ospina, N., Ozawa, S., Pacini, L., Palma, F., Papini, P., Rauch, B. F., Ricciarini, S. B., Sakai, K., Sakamoto, T., Sasaki, M., Shimizu, Y., Shiomi, A., Sparvoli, R., Spillantini, P., Stolzi, F., Sugita, S., Suh, J. E., Sulaj, A., Takita, M., Tamura, T., Terasawa, T., Torii, S., Tsunesada, Y., Uchihori, Y., Vannuccini, E., Wefel, J. P., Yamaoka, K., Yanagita, S., Yoshida, A., Yoshida, K.

论文摘要

在本文中，我们根据2015年10月至2019年10月的国际空间站对宇宙射线中碳和氧的能量光谱的测量。分析，包括对系统不确定性的详细评估，并报告了结果。能量光谱以每个核子的动能测量，从10 GEV $/N $到2.2 TEV $/N $，具有全含量仪器，总厚度对应于1.3核交互长度。观察到的碳和氧通量显示的频谱指数更改为$ \ sim $ 0.15，大约在200 Gev $/n $上建立，其显着性$>3σ$。它们具有相同的能量依赖性，恒定的C/O通量比$ 0.911 \ pm 0.006 $高于25 GEV $/N $。光谱硬化与通过AMS-02测量的光谱硬化是一致的，但是通量的绝对归一化降低了约27％，尽管与先前实验的观察结果一致，包括Pamela光谱仪和量热气球 - 燃料 - 荷兰实验乳膏。

In this paper, we present the measurement of the energy spectra of carbon and oxygen in cosmic rays based on observations with the Calorimetric Electron Telescope (CALET) on the International Space Station from October 2015 to October 2019. Analysis, including the detailed assessment of systematic uncertainties, and results are reported. The energy spectra are measured in kinetic energy per nucleon from 10 GeV$/n$ to 2.2 TeV$/n$ with an all-calorimetric instrument with a total thickness corresponding to 1.3 nuclear interaction length. The observed carbon and oxygen fluxes show a spectral index change of $\sim$0.15 around 200 GeV$/n$ established with a significance $>3σ$. They have the same energy dependence with a constant C/O flux ratio $0.911\pm 0.006$ above 25 GeV$/n$. The spectral hardening is consistent with that measured by AMS-02, but the absolute normalization of the flux is about 27% lower, though in agreement with observations from previous experiments including the PAMELA spectrometer and the calorimetric balloon-borne experiment CREAM.

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