arXiv 0707.01192007-07-01nucl-ex

NSCL天体物理计算用的非常奇异核素的TOF-Brho质量测量

TOF-Brho Mass Measurements of Very Exotic Nuclides for Astrophysical Calculations at the NSCL

M Matos, A Estrade, M Amthor, A Aprahamian, D Bazin, A Becerril, T Elliot, D Galaviz, A Gade, S Gupta, G Lorusso, F Montes, J Pereira, M Portillo, A M Rogers, H… 展开作者

M Matos, A Estrade, M Amthor, A Aprahamian, D Bazin, A Becerril, T Elliot, D Galaviz, A Gade, S Gupta, G Lorusso, F Montes, J Pereira, M Portillo, A M Rogers, H Schatz, D Shapira, E Smith, A Stolz, M Wallace

备注：: 8 pages, 4 figures, submitted to Journal of Physics G, proceedings of Nuclear Physics in Astrophysics III
DOI：: 10.1088/0954-3899/35/1/014045

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摘要：

原子质量在许多核天体物理计算中起着至关重要的作用。由于缺乏相关外来核素的实验值，世界各地迅速开发了新的质量测量设备。飞行时间（TOF）质量测量为最精确的Penning陷阱测量提供了一种补充技术，后者受到感兴趣离子的速率和半衰期的限制。NSCL的设施提供了一个非常适合的基础设施，飞行时间质量测量非常奇特的核。在这个设施，我们最近实施了一个TOF-Brho技术，并进行质量测量的富中子核素在Fe区，重要的r-过程计算和计算过程中发生的地壳吸积中子星。

英文摘要：

Atomic masses play a crucial role in many nuclear astrophysics calculations. The lack of experimental values for relevant exotic nuclides triggered a rapid development of new mass measurement devices around the world. The Time-of-Flight (TOF) mass measurements offer a complementary technique to the most precise one, Penning trap measurements, the latter being limited by the rate and half-lives of the ions of interest. The NSCL facility provides a well-suited infrastructure for TOF mass measurements of very exotic nuclei. At this facility, we have recently implemented a TOF-Brho technique and performed mass measurements of neutron-rich nuclides in the Fe region, important for r-process calculations and for calculations of processes occurring in the crust of accreting neutron stars.

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