Author/Authors :
Lewis، نويسنده , , Ernest K and Reynolds، نويسنده , , Dovie and Li، نويسنده , , Xiaochuan and de Villele، نويسنده , , Geraud and Leduc، نويسنده , , Charles and Cedeٌo، نويسنده , , David L and Manzanares I، نويسنده , , Carlos، نويسنده ,
Abstract :
Phase shift cavity ring-down absorption spectroscopy with a continuous laser is used to measure the absorption coefficients and integrated cross-sections for the Δv=6 C–H stretching overtones of C2H4,C2H6,C3H8, n-C4H10, and n-C5H12. The absorption spectrum is obtained by measuring the magnitude of the phase shift that an intensity modulated continuous laser beam experiences upon passing through an optical cavity. Sensitive absorption detection (10−6 cm−1) on gas-phase samples is demonstrated.
