Vibrationally excited S-2(a(1)Delta(g), nu = 1-10) was generated by the S(D-1) + OCS reaction and detected with dispersed laser-induced fluorescence (LIF) via the f(1)Delta(u)-a(1)Delta(g) transition. The time profiles of the vibrational levels of interest were recorded at varying pressures of He. A kinetic analysis made by the integrated profiles method has given the rate coefficients for vibrational relaxation of S-2(a(1)Delta(g), nu = 1-9) by collisions with He. The energy gap law nicely correlates the probabilities of vibrational energy transfer per collision from S-2(a(1)Delta(g)), O-2(X-3 Sigma(-)(g)), NO(X-2 Pi), and CO(X-1 Sigma(+)) to He. (C) 2016 Elsevier B. V. All rights reserved.