U.S.-Romania-Poland Planning for Cooperative Research in Nuclear Astrophysics at the Exteme Light Infrastructure-Nuclear Physics(ELI-NP)Facility in Bucharest, Romania

美国-罗马尼亚-波兰规划在罗马尼亚布加勒斯特的极端轻型基础设施-核物理（ELI-NP）设施进行核天体物理学合作研究

• 批准号: 1443249
• 负责人: Moshe Gai
• 金额: $ 2万
• 依托单位: University of Connecticut
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-05-15 至 2017-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1443249&HistoricalAwards=false
• 关键词: U.S.; Romania; Poland; Planning; Cooperative

Through a set of catalytic activities U.S. scientists at the University of Connecticut and Duke University intend to forge a long-term partnership for studies in nuclear astrophysics with international collaborators in Poland and Romania. The U.S. principal investigator, Moshe Gai, and Henry Weller of Duke University will cooperate with counterparts Wojciech Dominik, at the University of Warsaw, and Ovidiu Tesilean, at the Extreme Light Infrastructure-Nuclear Physics (ELI-NP) being constructed near Bucharest. Together, they will prepare the groundwork for new basic research in nuclear astrophysics and use of the gamma-ray beam facility of the ELI-NP in Magurele-Bucharest, Romania. This cooperation aims to leverage significant European Union investments in experimental ELI infrastructure while engaging U.S. expertise in the design of an electronic Time Projection Chamber (eTPC) detector and gas recycling system. For broader impact, breakthroughs that eventually contribute to a high-end gas recycling and purification system could yield ideas for future industrial applications. Because one U.S. postdoctoral student will participate in the early simulations and detector design, other benefits include early career engagement in this forefront U.S.-European teamwork. If successful, preliminary results should contribute to new concepts for detector technology capable of providing a highly precise determination of an important astrophysical quantity, the carbon-to-oxygen ratio in stellar helium burning. This collaboration presents a unique opportunity to link use of a new laser facility and planning for a new detector with a new novel u-v-w electronic Readout, developed in Warsaw for measuring x-ray emissions. After completed construction and with additional research support, results should allow scientists to determine photo nuclear cross sections for center-of-momentum energies lower than those investigated at the High Intensity gamma-ray Source (HIgS) facility in the U.S. The new data obtained can be expected to reduce the ambiguities in the astrophysical S-factors obtained at HIgS and therefore lead to determining a more precise carbon-to-oxygen ratio. The researchers hope that their new method may be applied to other important astrophysical reactions.

通过一系列催化活动，康涅狄格大学和杜克大学的美国科学家打算与波兰和罗马尼亚的国际合作者建立核天体物理学研究的长期合作伙伴关系。 美国杜克大学首席研究员 Moshe Gai 和 Henry Weller 将与华沙大学的同行 Wojciech Dominik 和 Ovidiu Tesilean 合作，在布加勒斯特附近建设极光基础设施-核物理（ELI-NP）项目。 他们将共同为核天体物理学的新基础研究和罗马尼亚马古雷莱-布加勒斯特 ELI-NP 伽马射线束设施的使用奠定基础。 这项合作旨在利用欧盟对实验 ELI 基础设施的大量投资，同时利用美国在电子时间投影室 (eTPC) 探测器和气体回收系统设计方面的专业知识。 为了产生更广泛的影响，最终有助于高端气体回收和净化系统的突破可能会为未来的工业应用带来想法。 由于一名美国博士后学生将参与早期模拟和探测器设计，因此其他好处包括早期参与这一最前沿的美国-欧洲团队合作。如果成功，初步结果将有助于探测器技术的新概念，能够高精度测定重要的天体物理量，即恒星氦燃烧中的碳氧比。 此次合作提供了一个独特的机会，将新激光设施的使用和新探测器的规划与华沙开发的用于测量 X 射线发射的新型 u-v-w 电子读数装置联系起来。完成建设并获得额外的研究支持后，结果应使科学家能够确定动量中心能量低于美国高强度伽马射线源（HIgS）设施所研究的光核截面。获得的新数据可以预计将减少 HIgS 获得的天体物理 S 因子的模糊性，从而确定更精确的碳氧比。研究人员希望他们的新方法可以应用于其他重要的天体物理反应。