The elastic constants of rubidium - Roberts, C.A.; Meister, R. (Elsevier)
The elastic constants of single crystal rubidium have been measured at 80 +/- 3^oK using the ultrasonic pulse echo method at a frequency of 15 mc. The elastic constants (in units of 10^1^0 dyncm^2) are c"1"1 = 2.96, c"1"2 = 2.44, c"4"4 = 1.60. Five wave velocities were measured, allowing the computation of the three independent elastic constants with two internal checks. Single crystal rubidium has an anisotropy indicated by the ratio (c"1"1-c"1"2)2c"4"4 = 0.14.
http://linkinghub.elsevier.com/retrieve/pii/0022-3697(66)90135-1
Keywords: V; U