Testing this at this time|
Comments about isobar separation at HRIBF:
- Mass excess values are from the 2012 mass table of
G. Audi, M. Wang, A. H. Wapstra, F. G. Kondev, M. MacCormick, X. Xu, and B. Pfeiffer,
Chinese Physics C 36, 1287 (2012)
M. Wang, G. Audi, A. H. Wapstra, F. G. Kondev, M. MacCormick, X. Xu, and B. Pfeiffer,
Chinese Physics C 36, 1603 (2012).
This version of the
was taken from AMDC at IMP in China;
- Isobaric mass differences are given as
M/dM = A * 931.5 / (dM1 - dM2)
where dM1 is the mass excess of the desired beam and dM2 is the
mass excess of the neighboring isobars.
- The isobar separator has a resolving power of M/dM~20,000; however,
the isobaric separation actually achieved will depend not only on
isobaric mass differences but also on the beam emittance, energy spread,
and isobar intensity ratios.
- The dispersion of the isobaric separator is given by:
dx(mm) = 5163 * dM/M (or dE/E if energy spread dominates).
This corresponds to 0.258 mm for M/dM = 20,000.
- Partial isobaric separation will usually be possible for M/dM<10,000,
but may result in reduced beam intensity.
- Energy is determined by the anode voltage (+0.150 kV), ion source voltage
(+/-40 kV), and platform voltage (+/-160 kV).
Typical energy for injection into the tandem is 200.15 keV.