The energy levels of the 1s(2), 1s2l and 1s3l states of helium-like iron Fe
XXV have been calculated using two sets of configuration-interaction wavef
unctions. One set of wavefunctions was generated using the fully relativist
ic GRASP code and the other was obtained using CIV3, in which relativistic
effects are introduced using the Breit-Pauli approximation. For transitions
from the ground state to the n = 2 and 3 states and for transitions betwee
n the ii = 2 and 3 states, the calculated excitation energies obtained by t
hese two independent methods are in very good agreement and then is good ag
reement between these results and recent theoretical and experimental resul
ts. However, there is considerable disagreement between the various excitat
ion energies for the transitions among the n = 2 and also among the n = 3 s
tates. The two sets of wavefunctions are also used to calculate the E1, E2,
M1 and M2 transition probabilities between all of the 1s(2), 1s2l and 1s3l
states of helium-like iron Fe XXV. The results from the two calculations a
re found to be similar and to compare very well with other recent results f
or Delta n = 1 or 2 transitions. For Delta n = 0 transitions the agreement
is much less satisfactory; this is mainly due to differences in the excitat
ion energies.