Comments about isobar separation at HRIBF:
- Mass excess values are from the 2003 mass table of
G. Audi, A. H. Wapstra and C. Thibault,
Nuclear Physics A729 (2003) p. 337-676.
This version of the
was taken from NNDC at BNL;
- Isobaric mass differences are given as
M/ΔM = A1 * 931.494013 / (M1 - M2)
where M1 is the mass of the desired beam and M2 is the
mass of the neighboring isobars.
- The isobar separator has a resolving power of M/ΔM~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 * ΔM/M (or ΔE/E if energy spread dominates).
This corresponds to 0.258 mm for M/ΔM = 20,000.
- Partial isobaric separation will usually be possible for
M/ΔM<10,000, but may result in reduced beam intensity.