Dissociation energies of7LiD

摘要

TheB1Pgr;minus;X1Sgr;plus;absorption spectrum of7LiD has been reexamined. Evidence for an additional vibrational level (ngr;prime;equals;3) in the upper state has been found. Because this vibrational level is extremely close to the dissociation limit, onlyJprime;equals; 1 andJprime;equals; 2 levels occur. This additional information provides an improved dissociation limit of 34671.5plusmn;0.4 cmminus;1, 1.5 cmminus;1lower and 20 times more precise than previous results. From this result, dissociation energies of 19767.7plusmn;0.4 cmminus;1for theXstate, 8588.4plusmn;0.9 cmminus;1for theAstate, and 201.8plusmn;0.4 cmminus;1for theBstate of7LiD are derived.