Br2 Absorption cross section, from
Seery, D.J. and D. Britton, The continuous absorption spectra of chlorine, 
bromine, bromine chloride, iodine chloride, and iodine bromide, J. Phys. 
Chem. 68, p. 2263 (1964).
Wavelength, nm
	Xsection, cm2
320	7.64735E-22
330	3.05894E-21
340	1.10887E-20
350	3.82368E-20
360	8.90916E-20
370	1.82007E-19
380	3.11247E-19
390	4.55017E-19
400	5.69345E-19
410	6.30907E-19
420	6.32818E-19
430	5.94582E-19
440	5.38374E-19
450	4.87136E-19
460	4.47752E-19
470	4.14486E-19
480	3.88103E-19
490	3.56367E-19
500	3.16983E-19
510	2.70334E-19
520	1.76654E-19
530	1.28093E-19
540	1.00563E-19
550	7.91501E-20
560	6.15612E-20
570	4.55017E-20
580	3.36483E-20
590	2.33244E-20
600	0