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陈家豪, 叶沿林, 马凯, 韩家兴, 王东玺, 林承键, 贾会明, 杨磊, 李根, 阳黎升, 胡梓瑶, 谭智威, 魏康, 蒲伟良, 陈莹, 楼建玲, 杨晓菲, 李奇特, 杨再宏, 骆天鹏, 黄大湖, 钟善豪, 李智焕, 许金艳. 通过4-α衰变观测16O中可能的玻色凝聚态[J]. 原子核物理评论, 2024, 41(1): 292-298. DOI: 10.11804/NuclPhysRev.41.2023CNPC35
引用本文: 陈家豪, 叶沿林, 马凯, 韩家兴, 王东玺, 林承键, 贾会明, 杨磊, 李根, 阳黎升, 胡梓瑶, 谭智威, 魏康, 蒲伟良, 陈莹, 楼建玲, 杨晓菲, 李奇特, 杨再宏, 骆天鹏, 黄大湖, 钟善豪, 李智焕, 许金艳. 通过4-α衰变观测16O中可能的玻色凝聚态[J]. 原子核物理评论, 2024, 41(1): 292-298. DOI: 10.11804/NuclPhysRev.41.2023CNPC35
Jiahao CHEN, Yanlin YE, Kai MA, Jiaxing HAN, Dongxi WANG, Chengjian LIN, Huiming JIA, Lei YANG, Gen LI, Lisheng YANG, Ziyao HU, Zhiwei TAN, Kang WEI, Weiliang PU, Ying CHEN, Jianling LOU, Xiaofei YANG, Qite LI, Zaihong YANG, Tianpeng LUO, Dahu HUANG, Shanhao ZHONG, Zhihuan LI, Jinyan XU. Searching for Possible Bose-Einstein Condensate States in 16O via Its 4-α Decay[J]. Nuclear Physics Review, 2024, 41(1): 292-298. DOI: 10.11804/NuclPhysRev.41.2023CNPC35
Citation: Jiahao CHEN, Yanlin YE, Kai MA, Jiaxing HAN, Dongxi WANG, Chengjian LIN, Huiming JIA, Lei YANG, Gen LI, Lisheng YANG, Ziyao HU, Zhiwei TAN, Kang WEI, Weiliang PU, Ying CHEN, Jianling LOU, Xiaofei YANG, Qite LI, Zaihong YANG, Tianpeng LUO, Dahu HUANG, Shanhao ZHONG, Zhihuan LI, Jinyan XU. Searching for Possible Bose-Einstein Condensate States in 16O via Its 4-α Decay[J]. Nuclear Physics Review, 2024, 41(1): 292-298. DOI: 10.11804/NuclPhysRev.41.2023CNPC35

通过4-α衰变观测16O中可能的玻色凝聚态

Searching for Possible Bose-Einstein Condensate States in 16O via Its 4-α Decay

  • 摘要: 近期在中国原子能科学研究院北京串列加速器核物理国家实验室开展的16O+12C非弹散射实验,给出了16O中存在4-α玻色凝聚状态的新证据。实验采用多套双面硅微条带电粒子望远镜,首次在16O衰变中实现了4个α粒子的准确识别(Particle Identification, PID)和符合测量。在此基础上获得了高分辨的反应Q值谱并重建了清晰的4-α共振态。其中在阈值附近观察到4个高显著度(大部分高于5σ)的共振态,它们按照12C(Hoyle state)+α的特征模式衰变,与理论预言的类Hoyle-BEC结构及其转动带特征相一致。本观测结果将推动进一步的理论研究,实验上也需要对上述共振态做更多物理量的观测。

     

    Abstract: Recently, an inelastic scattering experiment of 16O+12C was performed at the Beijing Tandem Accelerator Nuclear Physics National of China Institute of Atomic Energy. New evidence for the existence of Bose-Einstein condensation state of 16O has been obtained. Employing a series of double-sided-silicon-strip-based telescopes, this experiment achieved accurate particle identification and coincidence measurement of 4-α in the decay of 16O for the first time. Based on this, high-resolution reaction Q-value spectra was obtained and clear 4-α resonance states were reconstructed. In the vicinity of the 4-α separation threshold, 4 highly significant (3 of them above 5σ) resonance states were observed, which decay to the characteristic pattern of 12C(Hoyle state)+α, consistent with the predicted Hoyle-BEC structure and its rotating band features. The observation results will promote further theoretical research, and more measurements are needed for these resonance states in experiments.

     

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