We report the eigenfrequencies and quality factors of vibration of the lowest quadrupole modes of Al 5056 spherical resonators at very low temperatures. Q values of spheroidal modes ranging from 3 × 106 to 2 × 107 in a bulk sample and from 1.7 × 106 to 8 × 106 in an explosively bonded sample were measured. A Q value of 1.2 × 108 was found in a higher order mode of the bulk sample. Independence of the quadrupole modes was measured within one part in 105 in amplitude.
Coccia, E., Fafone, V., Frossati, G., Haar, E., Meisel, M. (1996). Eigenfrequencies and quality factors of vibration of aluminium alloy spherical resonators. PHYSICS LETTERS A, 219(5-6), 263-270 [10.1016/0375-9601(96)00452-5].
Eigenfrequencies and quality factors of vibration of aluminium alloy spherical resonators
COCCIA, EUGENIO;FAFONE, VIVIANA;
1996-01-01
Abstract
We report the eigenfrequencies and quality factors of vibration of the lowest quadrupole modes of Al 5056 spherical resonators at very low temperatures. Q values of spheroidal modes ranging from 3 × 106 to 2 × 107 in a bulk sample and from 1.7 × 106 to 8 × 106 in an explosively bonded sample were measured. A Q value of 1.2 × 108 was found in a higher order mode of the bulk sample. Independence of the quadrupole modes was measured within one part in 105 in amplitude.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
