论文标题
研究核结构接近$ n = 32 $和$ n = 34 $：中子富含CA，TI和V同位素的精确质量测量值
Investigating nuclear structure near $N = 32$ and $N = 34$: Precision mass measurements of neutron-rich Ca, Ti and V isotopes
论文作者
论文摘要
同位素的核质量测量是提高核素图表中我们对核结构的理解的关键，尤其是确定核壳闭合的外观或消失。我们介绍了在Titan和Lebit设施上进行的富含中子CA，Ti和V同位素的高精度质量测量。这些测量是使用泰坦多反射时间质谱仪（MR-TOF-MS）和LEBIT 9.4T笔记陷阱质谱仪进行的。总共测量了13个质量，其中8个代表了与先前测量相比的精度提高。这些测量值优化了质量表面的趋势，左右$ n = 32 $和$ n = 34 $，并支持$ n = 32 $ shell闭合的消失，质子数的增加。此外，我们的数据不支持$ n = 34 $的外壳关闭。
Nuclear mass measurements of isotopes are key to improving our understanding of nuclear structure across the chart of nuclides, in particular for the determination of the appearance or disappearance of nuclear shell closures. We present high-precision mass measurements of neutron-rich Ca, Ti and V isotopes performed at the TITAN and LEBIT facilities. These measurements were made using the TITAN multiple-reflection time-of-flight mass spectrometer (MR-ToF-MS) and the LEBIT 9.4T Penning trap mass spectrometer. In total, 13 masses were measured, eight of which represent increases in precision over previous measurements. These measurements refine trends in the mass surface around $N = 32$ and $N = 34$, and support the disappearance of the $N = 32$ shell closure with increasing proton number. Additionally, our data does not support the presence of a shell closure at $N = 34$.
