Charge breeding rare isotopes for high precision mass measurements: challenges and opportunities
Charge breeding rare isotopes for high precision mass measurements: challenges and opportunities
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用于高精度质量测量的电荷培育稀有同位素：挑战和机遇
DOI：
10.1088/0031-8949/2013/t156/014098
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发表时间：
2013
期刊：
影响因子：
2.9
通讯作者：
J. Dilling
中科院分区：
文献类型：
--
作者：
M. Simon;T. D. Macdonald;J. Bale;U. Chowdhury;B. Eberhardt;M. Eibach;A. Gallant;F. Jang;A. Lennarz;M. Luichtl;T. Ma;D. Robertson;V. V. Simon;C. Andreoiu;M. Brodeur;T. Brunner;A. Chaudhuri;José R. Crespo López;P. Delheij;S. Ettenauer;D. Frekers;A. Grossheim;G. Gwinner;A. Kwiatkowski;A. Lapierre;E. Mané;M. Pearson;R. Ringle;B. Schultz;J. Dilling
彭宁阱质谱的离子电荷增殖已经建立，提供了精度的增加，与离子的电荷状态成线性比例。快速有效的电荷增殖是该方法应用于稀有同位素的先决条件。然而，考虑到低产率和短半衰期，精度提升部分受到电荷增殖过程中不可避免的离子损失的影响。用于原子和核科学的质谱仪TRIUMF离子阱通过将彭宁阱和电子束离子阱耦合到TRIUMF的稀有同位素束流设施ISAC，开创了这一领域。在这里，我们提出的模拟计算和最大化的有效精度增益的飞行时间离子回旋共振测量与短寿命核素的高电荷离子。此外，我们比较了单电荷和高电荷离子的测量特征，并总结了最近的结果，这些结果探索了电荷繁殖的好处，而不仅仅是精度的提高。
Ion charge breeding for Penning-trap mass spectrometry has been established as providing a precision increase that scales linearly with the charge state of the ion. Fast and efficient charge breeding is a precondition for the application of this approach to rare isotopes. However, in view of low yields and short half-lives the precision boost is partly compromised by unavoidable ion losses inherent to the charge breeding process. The mass spectrometer TRIUMFs ion trap for atomic and nuclear science is pioneering this field by coupling a Penning trap and an electron beam ion trap to the rare-isotope beam facility ISAC at TRIUMF. Here we present simulations that calculate and maximize the effective precision gain of time-of-flight ion-cyclotron-resonance measurements with highly charged ions of short-lived nuclides. In addition we compare the characteristics of measurements with singly and highly charged ions, and we summarize recent results that explored benefits of charge breeding that go beyond the precision increase.