Commands below for listing the tabulated total emissivity as a function of temperature for *all* the lines in the APED/APEC database/code. Those emissivities (in the "l" variable) are in units of ergs*cm^3/s, but because the densities they're computed for are n = 1 cm^-3, then the total radiated power per unit volume, ergs/cm^3/s, have the same numerical value. OK... we'll have to think a little bit more about the units of the line emissivities and the units of this total plasma radiated line power. You can just use the temps and powers listed below, or you can recompute/reextract them yourself using the simple read_linelist.pro command. (Actually, we're now using a slightly updated version of atomdb, so it may be worth doing in case these values have changed a little.) And also, some of the radiation from plasma, especially at high temperatures, is emitted in the form of bremsstrahlung continuum (that's a continuum radiation process that arises when free electrons' trajectories change as they pass by ions in a plasma). I'm told that the emissivities for the continuum processes are tabulated in a file called apec_coco.fits. This file should be in the same directory as apec_line.fits. And I *think* there may be an IDL program analogous to read_linelist.pro that can read the information from apec_coco.fits. So, maybe you could look into that (by asking Eric where the relevant ATOMDB reading IDL code is, and maybe also asking him to help you figure out how to extract the continuum emissivity information from the apec_coco.fits file). To get total power: IDL> atomdb = getenv('ATOMDB') IDL> read_linelist,atomdb+'/apec_line.fits',line,t,n,l MRDFITS: Binary table. 8 columns by 1343 rows. MRDFITS: Binary table. 8 columns by 1796 rows. etc. Then, printing t, n, and l: IDL> print, t 10000.000 12589.250 15848.930 19952.620 25118.870 31622.780 39810.720 50118.720 63095.730 79432.820 100000.00 125892.50 158489.30 199526.20 251188.60 316227.80 398107.20 501187.20 630957.40 794328.20 1000000.0 1258925.0 1584893.0 1995262.0 2511886.0 3162278.0 3981072.0 5011872.0 6309574.0 7943282.0 10000000. 12589250. 15848930. 19952620. 25118860. 31622780. 39810720. 50118720. 63095740. 79432820. 1.0000000e+08 1.2589250e+08 1.5848930e+08 1.9952620e+08 2.5118860e+08 3.1622780e+08 3.9810720e+08 5.0118720e+08 6.3095740e+08 7.9432830e+08 1.0000000e+09 IDL> print, n 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 1.0000000 IDL> print, l 8.2916690e-24 4.2925960e-23 1.5931710e-22 1.4669180e-22 1.2707990e-22 1.1084950e-22 1.4478500e-22 2.1495860e-22 3.4742120e-22 5.3153530e-22 6.3211650e-22 6.0581300e-22 6.6167660e-22 7.3567730e-22 7.7567960e-22 5.3103600e-22 2.7506130e-22 2.2936180e-22 1.9161750e-22 1.6638650e-22 1.6220010e-22 1.4489930e-22 1.3047010e-22 1.0174050e-22 6.5204910e-23 4.4099860e-23 3.2856380e-23 3.1679880e-23 3.2534640e-23 3.3071500e-23 3.1835900e-23 2.4272020e-23 1.4738540e-23 8.8002260e-24 5.5257730e-24 4.1732200e-24 3.3660350e-24 2.8665950e-24 2.5777440e-24 2.2118120e-24 1.8473510e-24 1.4847020e-24 1.1078200e-24 8.4404180e-25 6.2550860e-25 4.6102140e-25 3.3894810e-25 2.4488720e-25 1.7810290e-25 1.2608190e-25 8.8788460e-26