Skip to main content
U.S. Department of Energy
Office of Scientific and Technical Information

Anelastic relaxation in irradiated Cu-Be

Conference ·
OSTI ID:5565177
Ultrasonic velocity measurements were made after thermal neutron irradiation of single-crystal Cu specimens containing 700 or 3700 appM Be. Ultrasonic attenuation was measured in similar specimens after 3 MeV electron irradiation. Three anelastic relaxation processes due to self-interstitial-Be complexes were observed. Cu-Be 1 was found to occur near liquid helium temperature; the temperature dependence of the velocity change suggests that reorientation of the Cu-Be 1 complex may involve quantum mechanical tunneling. Cu-Be produced an attenuation peak at approx.2.5 K at a frequency of 10 MHz. Cu-Be 3 appeared simultaneously with 2 as a shoulder on the high temperature side of the 2.5 K attenuation peak.
Research Organization:
Argonne National Lab., IL (USA); Illinois Univ., Urbana (USA)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
5565177
Report Number(s):
CONF-8506125-3; ON: DE85013893
Country of Publication:
United States
Language:
English