Ultrasonic attenuation in crystals under high pressure

Book · Mon Jan 01 04:00:00 EST 1973

OSTI ID:4419866

Hiki, Y; Maruyama, T

From 5th international conference on internal friction and ultrasonic attenuation in crystalline solids; Aachen, Germany (27 Aug 1973). Ultrasonic attenuation of copper single crystals has been measured as a function of sound frequency (10 MHz to 150 MHz) by applying hydrostatic pressure to the specimens. The specimens were crystals with <100>, <110>, and <111> axial orientations, being 9 mm in diameter and 15 mm in length. The test specimens were inserted in a high-pressure vessel. The attenuation-- frequency relation of each specimen was measured by changing the pressure from 1 to 4,000 atm. The specimens were then irradiated with /sup 60/Co gamma -rays to a dose of 10/sup 7/ R. The attenuation measurement was repeated. The difference of the attenuation before and after the irradiation was considered as due to the dislocation damping; the results were analyzed according to the theory of Granato and Luecke. (GE)

• Research Organization: Tokyo Inst. of Tech.
• NSA Number: NSA-29-003062
• OSTI ID: 4419866
• Country of Publication: Germany
• Language: English

Related Subjects

*COPPER-- PHYSICAL RADIATION EFFECTS
*ULTRASONIC WAVES-- ATTENUATION
CRYSTAL LATTICES
DAMPING
DISLOCATIONS
GAMMA RADIATION
HIGH PRESSURE
HYDROSTATICS
MEDIUM PRESSURE
MHZ RANGE 01-100
MHZ RANGE 100-1000
MONOCRYSTALS
N50230* --Metals
Ceramics
&amp; Other Materials--Metals &amp; Alloys--Properties
Structure &amp; Phase Studies
ORIENTATION
RADIATION DOSES
VERY HIGH PRESSURE