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1. JUNO sensitivity to ⁷ Be, pep, and CNO solar neutrinos

   https://doi.org/10.1088/1475-7516/2023/10/022  

   Abusleme, Angel; Adam, Thomas; Ahmad, Shakeel; Ahmed, Rizwan; Aiello, Sebastiano; Akram, Muhammad; Aleem, Abid; Alexandros, Tsagkarakis; An, Fengpeng; An, Qi; et al (October 2023, Journal of Cosmology and Astroparticle Physics)

   Abstract The Jiangmen Underground Neutrino Observatory (JUNO), the first multi-kton liquid scintillator detector, which is under construction in China, will have a unique potential to perform a real-time measurement of solar neutrinos well below the few MeV threshold typical of Water Cherenkov detectors. JUNO's large target mass and excellent energy resolution are prerequisites for reaching unprecedented levels of precision. In this paper, we provide estimation of the JUNO sensitivity to⁷Be,pep, and CNO solar neutrinos that can be obtained via a spectral analysis above the 0.45 MeV threshold. This study is performed assuming different scenarios of the liquid scintillator radiopurity, ranging from the most optimistic one corresponding to the radiopurity levels obtained by the Borexino experiment, up to the minimum requirements needed to perform the neutrino mass ordering determination with reactor antineutrinos — the main goal of JUNO. Our study shows that in most scenarios, JUNO will be able to improve the current best measurements on⁷Be,pep, and CNO solar neutrino fluxes. We also perform a study on the JUNO capability to detect periodical time variations in the solar neutrino flux, such as the day-night modulation induced by neutrino flavor regeneration in Earth, and the modulations induced by temperature changes driven by helioseismic waves. 

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2. To Be or Not To Be Protonated: cyclo -N ₅ ^– in Crystal and Solvent

   https://doi.org/10.1021/acs.jpclett.8b02841  

   Chen, Wei; Liu, Zhiqiang; Zhao, Yinghe; Yi, Xianfeng; Chen, Zhongfang; Zheng, Anmin (December 2018, The Journal of Physical Chemistry Letters)
3. Be–Be Bond in Action: Lessons from the Beryllium–Ammonia Complexes [Be(NH ₃ ) _0–4 ] ₂ ^0,2+

   https://doi.org/10.1021/acs.jpca.0c07939  

   Ariyarathna, Isuru R.; Miliordos, Evangelos (November 2020, The Journal of Physical Chemistry A)

   null (Ed.)
4. Production rate calibration for cosmogenic ¹⁰ Be in pyroxene by applying a rapid fusion method to ¹⁰ Be-saturated samples from the Transantarctic Mountains, Antarctica

   https://doi.org/10.5194/gchron-6-491-2024  

   Bergelin, Marie; Balco, Greg; Corbett, Lee B; Bierman, Paul R (August 2024, Geochronology)

   Abstract. Measurements of multiple cosmogenic nuclides in a single sample are valuable for various applications of cosmogenic nuclide exposure dating and allow for correcting exposure ages for surface weathering and erosion and establishing exposure–burial history. Here we provide advances in the measurement of cosmogenic 10Be in pyroxene and constraints on the production rate that provide new opportunities for measurements of multi-nuclide systems, such as 10Be/3He, in pyroxene-bearing samples. We extracted and measured cosmogenic 10Be in pyroxene from two sets of Ferrar Dolerite samples collected from the Transantarctic Mountains in Antarctica. One set of samples has 10Be concentrations close to saturation, which allows for the production rate calibration of 10Be in pyroxene by assuming production–decay equilibrium. The other set of samples, which has a more recent exposure history, is used to determine if a rapid fusion method can be successfully applied to samples with Holocene to Last Glacial Maximum exposure ages. From measured 10Be concentrations in the near-saturation sample set we find the production rate of 10Be in pyroxene to be 3.74 ± 0.10 atoms g−1 yr−1, which is consistent with 10Be/3He paired nuclide ratios from samples assumed to have simple exposure. Given the high 10Be concentration measured in this sample set, a sample mass of ∼ 0.5 g of pyroxene is sufficient for the extraction of cosmogenic 10Be from pyroxene using a rapid fusion method. However, for the set of samples that have low 10Be concentrations, measured concentrations were higher than expected. We attribute spuriously high 10Be concentrations to failure in removing all meteoric 10Be and/or a highly variable and poorly quantified procedural blank background correction. 

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5. Lifetimes of Be ₃ ^2– and Mg ₃ ^2– Cluster Dianions

   https://doi.org/10.1021/acs.jpca.1c00770  

   Davis, Jeremy U.; Phung, Quan Manh; Yanai, Takeshi; Ehara, Masahiro; Sommerfeld, Thomas (May 2021, The Journal of Physical Chemistry A)