relaxation time


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.

relaxation time

(ree-laks-ay -shŏn) The time taken for the velocity of an object in a multiple-body system to become similar to the velocity of others in that system, and hence for the total system to become smooth and regular. See dynamical relaxation.
Collins Dictionary of Astronomy © Market House Books Ltd, 2006

relaxation time

[‚rē‚lak′sā·shən ‚tīm]
(physics)
For many physical systems undergoing relaxation, a time τ such that the displacement of a quantity from its equilibrium value at any instant of time t is the exponential of -t /τ.
(solid-state physics)
The travel time of an electron in a metal before it is scattered and loses its momentum.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The storage modulus and loss modulus of PET samples were obtained by dynamic rheological frequency scanning method, and the continuous relaxation time spectrum of PET can be obtained by fitting the function:
Fast measurement of the quadriceps femoris muscle transverse relaxation time at high magnetic field using segmented echo-planar imaging.
According to formulas (1) and (2), it is found that the relaxation time r of graphene is also an important parameter affecting the conductivity of graphene, although it only affects the linear part of the conductivity of the graphene, that is, the real part of conductivity of graphene.
By using these values for PVA, adiabatic compressibility, acoustic impedance, intermolecular free length, relaxation time, and ultrasonic attenuation have been calculated by using well known relations [18-20] and the results have been presented in Tables 4, 5, 6, 7, and 8, respectively.
A detailed analysis shows the influence of the frequency, viscoelasticity, and relaxation time on the dynamic stability evolution and the hysteresis.
Processing of MR images weighted by relaxation time T2 to increase their contrast resolution.
From Cole-Cole diagram; polarizability and relaxation time were calculated the results show that the polarizability increase with increase applied voltage and relaxation time decrease with increase applied voltage.
This paper demonstrates the potential of a functional antibody-labeled MRI contrast agent to detect PSMA-positive prostate cancer by monitoring [T.sub.2] relaxation time and signal intensity reduction in spin echo images.
where [[tau].sub.I] is the phonon impurity scattering relaxation time [31].
Combined with a capillary pressure curve, the shift of the transverse relaxation time ([T.sub.2]) distribution of Nuclear Magnetic Resonance is used to determine the parameters in the model.
The time for dipoles to return to their initial position is called relaxation time. Each micro-dipole has its own relaxation time depending on its physical characteristics.