As of March 2009, the FLYCHK code has a new version that utilizes the better data sets of auto-ionization rates, collisional excitation cross-sections and photoionization cross-sections for super-configuration levels, that is for ions with more than 3 electrons. Users may find a substantial change in average charge states for M-shell or N-shell ions of high Z atoms. Though the new version has been thoroughly tested to our capacity, authors would be greatly thankful for a feedback on any potential errors in the code.

A new manual is added.

FLYCHK has 100 users!

The new version of FLYCHK is here:

1. improved mixture option: Before, one can only establish a fixed for a mixture option. Now, one can specify the time-dependent of the other species in a history file. An example will be presented shortly.
2. fast computation for non-Maxwellian case FLYCHK can use an arbitrary electron energy distribution function f_e(E) for collisional rates but it takes much longer to run the case since rate calculations involve the numerical integration over f_e(E). A new scheme is implemented to expedite the calculations.

Q&A section is added.

1. A few forbidden transitions are added for He- and Li-like ions of Z<27.
2. As a result, the relative Li-like satellites of Z <27 ions may be different from the old calculations.
3. Collisional data by using arbitrary electron energy distribution function are corrected.