Optical design of the tofi (time-of-flight isochronous) spectrometer for mass measurements of exotic nuclei
Abstract
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.
- Publication:
-
Nuclear Instruments and Methods in Physics Research A
- Pub Date:
- October 1985
- DOI:
- 10.1016/0168-9002(85)90390-0
- Bibcode:
- 1985NIMPA.240...77W