AI 中文总结
利用FRIB的LEBIT潘宁阱对52Ni和51Co进行高精度质量测量，结合相关能量确定54Zn质量过剩，新质量值揭示A = 52和A = 54时等压质量多重态方程失效，为同位旋对称性破缺效应提供基准，支持特定理论描述。
AI 中文摘要
我们利用稀有同位素束流装置（FRIB）的LEBIT潘宁阱对富质子核52Ni和51Co进行了高精度质量测量。对于52Ni，确定其质量过剩为-22474.8(2.2)keV，与最近在冷却储存环（CSRe）上的测量结果一致，但精度提高了37倍。对于51Co，得到质量过剩为-27375.1(5.7)keV，与CSRe最近的结果相符，同时不确定性降低了2倍。结合52Ni的质量值和54Zn已知的双质子衰变能量，确定54Zn的质量过剩为-6463(42)keV。这些新的质量值揭示了A = 52和A = 54时等压质量多重态方程的重大失效，并为富质子f p壳中的同位旋对称性破缺效应提供了严格的基准，支持省略库仑交换项的理论描述。
英文摘要
We performed high-precision mass measurements of the proton-rich nuclei $^{52}$Ni and $^{51}$Co with the LEBIT Penning trap at the Facility for Rare Isotope Beams (FRIB). For $^{52}$Ni, a mass excess of $-22474.8(2.2)$~keV was determined, which is consistent with a recent storage-ring measurement at the Cooler-Storage Ring (CSRe) but has a factor 37 improved precision. For $^{51}$Co, we obtained a mass excess of $-27375.1(5.7)$~keV, agreeing with a recent CSRe result, while reducing the uncertainty by a factor~2. Combining our mass value for $^{52}$Ni with the known two-proton decay energy of $^{54}$Zn, we determined the mass excess of $^{54}$Zn to be $-6463(42)$~keV. These new mass values reveal a substantial breakdown of the isobaric mass multiplet equation for $A=52$ and $A=54$, and provide stringent benchmarks for isospin-symmetry-breaking effects in the proton-rich $fp$-shell, favoring theoretical descriptions that omit the Coulomb-exchange term.
