亚稳态分子CS(α~3Π)猝灭速率常数的测定

QUENCHING RATE CONSTANTS FOR METASTABLE MOLECULE CS(a^3Π)

亚稳态CS(α~3Ⅱ)自由基碎片是一种具有应用前景的激光工作物质,它的能级寿命为16ms,其辐射跃迁几率较小.Black 等利用CS_2光解离产生CS(α),并测定了CS(α)与几种小分子的猝灭速率常数.Taylor 研究了亚稳态原子Ar(~3P_(0.2))、Xe(~3P_(0.2))与CS_2、CSCl_2、SCO、的传能反应,半定量地测定了CS_2、CSCl_2、OCS 对CS(a)的猝灭速率常数.

The metastable molecule CS(a^8Π)has been obtained,by the energy transferreaction of He(2~3S)with CS_2 in a discharge-flow system The technique of fixed ob-servation-point was used to obtained the quenching rate constants of CS(a^3Π)withvarious reagents CO_2,CS_2,ICl,H_2O,NOCl,CH_2Cl_2,CHF_2Cl and SF_6.Thc mechanismfor quenching has been discussed.