Optical design of the tofi (time-of-flight isochronous) spectrometer for mass measurements of exotic nuclei
Optical design of the tofi (time-of-flight isochronous) spectrometer for mass measurements of exotic nuclei
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DOI：
10.1016/0168-9002(85)90390-0
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发表时间：
1985-10
影响因子：
1.4
通讯作者：
J. Wouters;D. Vieira;H. Wollnik;H. Enge;S. Kowalski;K. Brown
中科院分区：
文献类型：
--
作者：
J. Wouters;D. Vieira;H. Wollnik;H. Enge;S. Kowalski;K. Brown
本文描述了一种用于系统测量远离β稳定谷的原子核质量的新型反冲飞行时间等熵谱仪的设计。使用四个相同的池的方法，光谱仪的光学像差被最小化，导致计算的飞行时间质量分辨能力为m Δm= 2000。该谱仪的立体角接受度μ= 2.8 msr，动量荷比接受度（Δp ze）/（p ze）=± 2%，在LAMPF上使用高强度质子束将有助于进行良好的统计实验，从而产生新的直接质量测量，对于A< 70的核，其不确定度为30 keV至1 MeV（取决于产生速率）。
The design of a novel recoil time-of-flight isochronous spectrometer for systematic mass measurements of nuclei which lie far from the valley of β-stability is described. Using a four identical cell approach, optical aberrations of the spectrometer are minimized resulting in a calculated flight-time mass resolving power of m Δm= 2000. With the spectrometer designed for a solid angle acceptance of μ= 2.8 msr and a momentum over charge acceptance of (Δp ze)/(p ze)=±2%, use of the high intensity proton beam at LAMPF will facilitate good statistics experiments yielding new direct mass measurements with uncertainties of 30 keV to 1 MeV (depending on production rates) for nuclei with A< 70.