AUDI_95.readme


          Audi & Wapstra's Recommended Masses, Version 1995
                (Original file name mass_rmd.mas95)
          *************************************************
Reproduced below is a part of the original readme file by Audi & Wapstra. 
More detailed information is available from the Atomic Mass Data Center:  
 1) by accessing anonymous ftp to: csnftp.in2p3.fr, in directory /pub/AMDC  
 2) or through the Web at the address http://csnwww.in2p3.fr/amdc/.
...............................................................................
            A T O M I C       M A S S       E V A L U A T I O N
 
 
        *********         A -  GENERAL INFORMATION         *********
        *********         A -  GENERAL INFORMATION         *********
 
                             (November 21, 1995)
 
        I - INTRODUCTION
 
        The table  of masses and  the table of nuclear  reaction and
        separation energies resulting  from the evaluation published
        in:
             -------------------------------------------------
            | "THE 1995 UPDATE TO THE ATOMIC MASS EVALUATION" |
            |                                                 |
            |                    (Ame'95)                     |
            |                                                 |
            |           by G. Audi and A.H. Wapstra           |
            |                                                 |
            |       Nuclear Physics A595 (1995) 409-480.      |
            |                                                 |
            |               (December 25, 1995)               |
             -------------------------------------------------
 
        are  available  electronically  at the  ``Atomic  Mass  Data
        Center" (AMDC) and at the Nuclear Data Centers.
 
        Six files from this evaluation can be obtained:
            mass_rmd.mas95   Recommended  masses
            rct1_rmd.mas95   Recommended  reaction energies, table 1
            rct2_rmd.mas95   Recommended  reaction energies, table 2
            mass_exp.mas95   Experimental masses
            rct1_exp.mas95   Experimental reaction energies, table 1
            rct2_exp.mas95   Experimental reaction energies, table 2
        Most  readers can  best use  the set  of recommended  tables
        (labelled  with `rmd')  whereas  the  more specialized  user
        could  with  benefit  analyze  the second  set  (with  label
        `exp').
 
        The first file, mass_rmd.mas95, contains the table of masses
        as  printed  in  the   reference  above,  plus  the  binding
        energies,  the beta-decay  energies and  the atomic  masses.
        The next two  files correspond to the table  of reaction and
        separation energies (cf. "The  1993 Atomic Mass Evaluation",
        part II) in two parts of 6 entries each:
           rct1_rmd.mas95 for S2n, S2p, Q(a), Q(2B),  Q(ep),  Q(B-n)
           rct2_rmd.mas95 for Sn,  Sp, Q(4B), Q(d,a), Q(p,a), Q(n,a)
        The   last   three    files   with   names   mass_exp.mas95,
        rct1_exp.mas95 and rct2_exp.mas95 are identical to the first
        three files except for the  values resulting from the use of
        the few  deviating experimental  data, listed in  Table~B of
        Ame'93 and updated in Table~IV-a of Ame'95.
 
        Values  in these  files are  exact (unrounded)  copy of  the
        published ones.
           *  They can conveniently be used for calculations.
           *  They should not be copied in a publication as given in
              these files, but instead, rounded values, as published
              in the above Journal should be used.
 
 
        II - VALUES FOR THE MOST PRECISE CALCULATIONS:
 
        a - values for the most precise masses:
 
                      Mass excess (keV)        Atomic mass (micro-u)
 
          1  n      8071.32281  0.00215       1008664.92326  0.00221
          1 H       7288.96940  0.00064       1007825.03214  0.00035
          2 H      13135.71961  0.00104       2014101.77799  0.00036
          3 H      14949.79417  0.00149       3016049.26753  0.00106
          3 He     14931.20356  0.00138       3016029.30970  0.00086
          4 He      2424.91109  0.00095       4002603.24968  0.00100
         13 C       3125.01081  0.00095      13003354.83780  0.00099
         14 C       3019.89233  0.00374      14003241.98845  0.00400
         14 N       2863.41701  0.00083      14003074.00524  0.00086
         15 N        101.43823  0.00085      15000108.89844  0.00092
         16 O      -4736.99828  0.00147      15994914.62211  0.00153
         20 Ne     -7041.92974  0.00192      19992440.17589  0.00198
         28 Si    -21492.79309  0.00244      27976926.53273  0.00196
         40 Ar    -35039.88974  0.00387      39962383.12324  0.00305
 
        b - values for the correlation coefficients (in nano-amu**2)
 
            n          H         D         3H        3He      4He
 
         4.899380
        -0.083048   0.123414
         0.092465   0.040200  0.132764
         0.014840  -0.000165  0.014699  1.114100
         0.006104   0.002664  0.008774  0.446509  0.733021
        -0.000036   0.000001 -0.000001  0.000000  0.000000  0.999982
 
 
        III - FORMAT:
 
        All files  are 2931 lines  long with 124 character  per line
        (originally in fixed format).  Headers are 39 lines long.
 
        Record Format:
 
        1 - For mass-files:
 
           Column       Format        Quantity
 
             1:1        a1            fortran control character (a)
             2:4        i3            N-Z neutron excess
             5:9        i5            N  neutron number
            10:14       i5            Z  atomic number
            15:19       i5            A  mass number
            20:20       1x
            21:23       a3            Chem Symbol
            24:27       a4            origin
            28:28       1x
            29:39       f11.3         mass
            40:48       f9.3          mass accuracy
            49:59       f11.3         binding energy
            60:68       f9.3          binding energy accuracy
            69:72       4x
            73:74       a2            B+ or B-
            75:85       f11.3         beta decay energy
            86:94       f9.3          beta decay energy accuracy
            95:96       2x
            97:110      i3,1x,f10.3   atomic_mass
           111:119      f9.3          atomic mass accuracy
 
 
        2 - For rct-files :
 
           Column       Format        Quantity
 
             1:1        a1            fortran control character (a)
             2:4        i3            A mass number
             5:5        1x
             6:8        a3            Chem Symbol
             9:11       i3            Z atomic number
            12:12       1x
            13:30       f10.2,f8.2    energy 1, accuracy 1
            31:48       f10.2,f8.2    energy 2, accuracy 2
            49:66       f10.2,f8.2    energy 3, accuracy 3
            67:84       f10.2,f8.2    energy 4, accuracy 4
            85:102      f10.2,f8.2    energy 5, accuracy 5
           103:120      f10.2,f8.2    energy 6, accuracy 6
 
        Notes:
          a- Fortran control character: 1 = page feed
                                        0 = line feed
          b- decimal point is replaced by  # for values derived from
                  systematical trends (see publications).
          c- * in place of value means `not calculable'
 
 
        IV - CORRECTIONS AND SUGGESTIONS
 
        If   you   find  errors   or   omissions   in  the   present
        documentation,  or, if  you  have a  suggestion  to make  it
        clearer, please  send a message to  the following electronic
        address.  Thanks in advance.
              internet : audi@frcpn11.in2p3.fr
 .........................................................................