Solar Neutrinos

建议编号：0802114投资：弗吉尼亚理工学院NSF计划：PHY-核ASTROPHYSICSPRINCIPAL研究员：Vogelaar，Robert B.TITLE：太阳中微子摘要该奖项为弗吉尼亚理工大学继续参与意大利Gran Sasso地下实验室的Borexino实验提供资金。太阳中微子实验为中微子的质量和混合提供了第一个证据。Borexino实验最近首次实时测量了来自7Be的低能太阳中微子的通量。这一结果与标准太阳模型和中微子振荡的预测是一致的。该小组计划处理校准系统的充分利用、参与数据采集和分析以及预期的Borexino结果所涉问题。随着现在实现了更好的纯度和校准，测量Borexino中的CNO和PEP太阳中微子通量的可能性现在是现实的。该计划预计将对科学、技术和外延产生更广泛的影响，包括部署和利用超清洁校准技术，并创造出一种可能性，即人们可能首次直接测量今天的太阳？S的发电量，而不是延迟约5万年后在光球层中看到的能量。该活动面向弗吉尼亚州及邻近各州大学的天体物理学家、宇宙学家、地球物理学家和地球化学家、化学家和化学工程师、教师和学生，以及国际科学界。

PROPOSAL NUMBER: 0802114INSTITUTION: VA Polytechnic Inst & St U NSF PROGRAM: PHY - NUCLEAR ASTROPHYSICSPRINCIPAL INVESTIGATOR: Vogelaar, Robert B.TITLE: Solar Neutrinos ABSTRACTThis award provides funding for the Virginia Tech group to continue their participation in the Borexino experiment at the Gran Sasso underground lab in Italy. Experiments with solar neutrinos gave the first evidence for neutrino mass and mixing. The Borexino experiment has recently made the first real-time measurement of the flux of low energy solar neutrinos from 7Be. The result is consistent with predictions of Standard Solar Models and neutrino oscillations. The group plans to address the full utilization of the calibration system, participation in data acquisition and analysis, and the implications of anticipated Borexino results. With better purity and calibration now achieved, the potential for measuring the CNO and pep solar neutrino fluxes in Borexino is now realistic. The broader impact on science, technology and outreach that is expected from the program includes deployment and utilization of ultra-clean calibration techniques and creating the possibility that, for the first time, one might directly measure the Sun?s energy generation today, versus what is currently seen in the photosphere after a delay of about 50,000 years. The outreach is to astrophysicists, cosmologists, geophysicists and geochemists, chemists and chemical engineers, teachers and students in universities in Virginia and neighboring states and the international scientific community.