&SPECIES_PARAMS
 PSPECIES="I2-131          ",
 PDECAY=  691200.000    ,
 PWETA_GAS=  8.0E-05,
 PWETB_GAS= 0.62    ,
 PRELDIFF=  2.70    ,
 PHENRY=  100000.000    ,
 PF0= 0.1    ,
 /