초록

A spectroscopic method of sensing the presence of methane in an atmosphere includes directing through the atmosphere light emitted by a neodymium laser at a wavelength having a fluorescence linewidth which embraces at least one significant absorption line of the v2+2v2 band of methane.

대표청구항 ▼

A spectroscopic method of sensing the presence of methane in an atmosphere, comprising directing through the atmosphere light emitted by a neodymium laser at a wavelength having a fluorescence linewidth which embraces at least one significant absorption line of the v2+2v3 band of methane, and monito

A spectroscopic method of sensing the presence of methane in an atmosphere, comprising directing through the atmosphere light emitted by a neodymium laser at a wavelength having a fluorescence linewidth which embraces at least one significant absorption line of the v2+2v3 band of methane, and monitoring said light after traversal of the atmosphere to detect said absorption line(s) for the presence of methane in the atmosphere traversed by the emitted light.