X-Ray Photoacoustic Spectroscopy of CuCl, CuBr, and CuI

Abstract

The hard X-ray absorption spectra of CuCl, CuBr, and CuI have been measured at X-ray absorption near-edge structure (XANES) regions with a photoacoustic detector using synchrotron radiation. These spectra were compared with optical density of X-ray spectra. It is shown that the information derived from XANES is also included in the X-ray photoacoustic spectrum which reflects the heat production processes in those Cu compounds. However, the results showed that the increases and changes of the photoacoustic signal were different from those of the X-ray absorption coefficient at XANES regions.