Low Energy Gamma Radiation Induced Effects on Ultrasonic Velocity and Acoustic Parameters in Polyvinylidene Fluoride Solution
Table 3
Variation of density, viscosity, and ultrasonic velocity of 0.2 wt% PVDF solution in dimethylacetamide with dose rate.
Dose (mGY)
Density ρ kg/m3
Viscosity η Nsm−2 10−3
Ultrasonic velocity m/s
Compressibility β 10−10
Intermolecular free path length 10−11
Acoustic impedance 106
Relative association
Ultrasonic attenuation 10−14
Relaxation time 10−13
0
949.73
1.114
1488.3
4.714
4.459
1.425
—
2.786
6.999
504.756
956.83
1.399
1492.2
4.666
4.436
1.436
1.003
3.455
8.704
673.008
957.62
1.491
1495.3
4.627
4.417
1.445
1.005
3.643
9.198
1346.016
1112.25
1.661
1498.8
4.598
4.404
1.451
1.004
4.025
10.185
1394.016
1114.76
1.762
1501.7
4.571
4.390
1.457
1.004
4.235
10.738
Source: Cs-137. Source strength: 28.042 mGY/hrwt% is 0.2%.
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