
High Pressure Collaborative Access Team (HPCAT) High Pressure Collaborative Access Team (HPCAT)
at the Advanced Photon Source
Ultrasonic elastic wave velocity measurement in PE cell
Ultrasonic elasticwave velocity measurement was developed by ultrasonic pulse echo overlap method combined with white x-ray radiography measurement (Kono et al., 2012, Review of Scientific Instruments, 83, 033905). Figure 1 shows an example of design of PE cell for ultrasonic measurement. A series of reflected elastic wave signals came from the interfaces of anvil/buffer rod (R0), buffer rod/sample (R1), sample/backing reflector (R2), and the back of backing reflector (R3) (Figs. 1 and 2). The elastic wave travel time through the sample can be determined by the pulse echo overlap method using the reflected signals from the buffer rod/sample (R1) and sample/backing reflector (R2) interfaces. Software to analyze the ultrasonic wave travel time is available at HPCAT.