Hanle effect lifetime measurements on selectively excited diatomic sulfur

Lifetimes for two selectively excited levels of the B3Σu− state of gaseous diatomic sulfur have been measured using the Hanle effect. The ZnI 3075.9 Å line overlaps the P 1(41) absorption line of the (4, 1) band of the B -X transition, and the CdI 3261.1 Å line overlaps the P 1(43) line of the (3, 3) band. We assume a magnetic moment for the B state calculated using a nonzero spin-spin interaction constant to obtain lifetimes of 18.3 ± 1.4 nsec for the ν′ = 4, N′ = 40, J′ = 41 level, and 20.7 ± 1.4 nsec for the ν′ = 3, N′ = 42, J′ = 43 level (quoted errors are 2σ estimates derived from the errors in the experimental data only).