Low Energy Gamma Radiation Induced Effects on Ultrasonic Velocity and Acoustic Parameters in Polyvinylidene Fluoride Solution
Table 4
Variation of density, viscosity, and ultrasonic velocity of 0.5 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
1116.69
1.338
1510
3.928
4.070
1.686
—
2.748
7.004
504.76
1117.59
1.357
1520
3.873
4.041
1.699
0.994
2.730
7.006
673.01
1119.32
1.377
1524
3.847
4.027
1.706
0.993
2.744
7.060
1346.02
1121.40
1.404
1530
3.809
4.008
1.716
0.991
2.760
7.129
1394.02
1124.80
1.426
1534
3.778
3.99
1.725
0.992
2.774
7.183
1514.00
1130.20
1.478
1552
3.673
3.936
1.754
0.985
2.764
7.241
Source: Cs-137. Source strength: 28.042 mGY/hrwt% is 0.5%.
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