Table of Radioactive Isotopes X-ray and Gamma-ray Data Formats
These x-ray and gamma-ray data are in text format. The data are organized as
follows.  For each parent decay mode the following record is written (column
number in parenthesis).

     P(1) - denotes parent record - A1
     A(3-5) - parent atomic number - I3
     Z(7-9) - parent atomic number - I3
     DCMD(11-12) - decay mode - A2
     THALF(14-24) - half-life - F11.5
     DTHALF(26-36) - half-life uncertainty - F11.5
     HUNIT(38-39) - half-life unit - A2
     BR_M(41-43) - alphanumeric BR modifier, see below - A3
     DNR(45-54) - NR percent uncertainty - E10.4
     DNT(56-65) - NT percent uncertainty - E10.4
     DBR(67-76) - BR percent uncertainty - E10.4

The decay modes are generally obvious.  Half-lives are standardized so that
the magnitudes fall between 1 and the next unit (e.g. 120 s = 2 m).  BR-M
indicates an alphanumeric uncertainty on BR (e.g. GT, LT, AP) or 'UNK'
indicating that the normalization was unknown in ENSDF.  If DNR, DNT, or DBR
are nonzero and BR_M=UNK then the normalization is probably absolute.
Almost all cases with BR-M blank are absolute normalizations.  This can
be checked in the Table of Radioactive Isotopes.

If gamma rays are associated with a parent record, the gamma records follow
consecutively until another parent record is encountered.  The gamma record
formats are as follows.

     E(keV)(1-11) -gamma energy - F11.5
     DE(13-21) - gamma energy uncertainty - F9.5
     XTYPE(23-25) - blank if gamma, type if x-ray - A3
     I(27-35) - gamma intensity - E9.3
     DI(37-44) - gamma intensity uncertainty - E8.2
     TYPE(46) - transition type (see below) - A1
     ICC(48-57) - total conversion coefficient - E10.4
     MULT(59,61,63,65,67,69) - up to 3 multipolarities - 3(A1,1X,I1)
     MR(71-79) - mixing ratio - F9.6
     DMR(81-89) - mixing ratio uncertainty - F9.6
     M_M(91-93) - multipolarity modifier (see below) - A3

The intensities are per 100 disintegrations of the parent if absolute or
normalized to 100 for the strongest transition if relative.  The field type
will be R if the photon intensity is given, T if total photon plus electron
intensity is given and X for x-ray intensity.  The x-ray designation is given
by XTYPE.  The M_M field provides qualitative information about the
multipolarity data.  FIX means multipolarity calculated from level spins, IF
carries the same meaning as in ENSDF, () means the multipolarities are in
parenthesis and comma means that the multipolarities were separated by commas
in ENSDF.