【摘要】 改进的光声光谱归一化技术,避免了普通的分光法归一化光声光谱技术中分束镜以及锁相放大器动态范围的影响和限制,实现宽光谱范围内准确的光谱测量。氙灯光源功率起伏用修正项修正,误差在5％以内,实现各次实验数据的可比性。更多还原

【Abstract】 A normalizing photoacoustic spectrum(PAS) technique improved .which avoids the influence and the limit from the spectroscope used in the conventional normalizing technology,removes the limit from scope of the ratio of the amplifier,makes it possible to measure in a wide rang of wavelength,is offered. The power gurgitation of xenon lamp is resolved through the measurement of carbon black sample at a certain wavelength, refining its relative error in 5%,realizing the comparability among various data measured at different time.更多还原