Magnetic Field Dependence of the Ultrasonic Attenuation of Shear Waves in Cesium

The magnetic field dependence of the ultrasonic attenuation of shear waves has been measured in high-purity single crystals of cesium. Measurements were made at frequencies between 15 and 87 MHz at 4.2 and 1.3 °K, corresponding to a range in $\mathrm{ql}$ from 1 to 35. The results are compared with the Cohen-Harrison-Harrison theory of ultrasonic attenuation and with previous studies done on potassium. The results agree rather well with theory and the discrepancies that are observed are similar to those observed in potassium.