| Geant4 Cross Reference |
1
2 This README file provides instructions for rea
3 schemes in the files zXX.aYYY found in the dir
4 (most recent version). This directory, as wel
5 available from the Geant4 download page
6
7 http://geant4.web.cern.ch/geant4/support/downl
8
9 under the Data files heading. In order to use
10 correctly, you must download and unpack the ab
11 area, and set the environment variable
12
13 G4RADIOACTIVEDATA
14
15 to point to it.
16
17 **********************************************
18 In each of the files, lines beginning with eit
19 comments.
20
21 Lines beginning with a 'P' are headers, each o
22 the nucleus. The first number is the excitati
23 is the half life in seconds. Indented lines un
24 modes for that excitation. There are two type
25 distinguished by the number of columns.
26
27 If there are 3 columns only, this is a header
28 that type from this level. The first column i
29 column is zero, and the third column in the br
30 as a fraction of unity. Therefore, the third
31 records under a given 'P' line should sum to 1
32
33 If there are four columns, this is a record wh
34 decay type, specific to a given lower level in
35 first column is the decay type, the second col
36 of the daughter (in keV), and the third column
37 percentage (! note... not a fraction of unity)
38 which came from the 3-column record for this d