HVL

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AcronymDefinition
HVLHalf-Value Layer
HVLHardware Verification Language
HVLHigh Voltage Laboratory
HVLHighly Volatile Liquids
HVLHigh-level Verification Language
HVLHypervelocity Launcher
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References in periodicals archive ?
The variation of half-value layer, HVL, and tenth-value layer, TVL, of the borate glass samples with photon energy ranging from 1 keV to 100 GeV is shown in Figures 2 and 3.
Characteristics of the reference radiation qualities used for the comparison Reference Generating Additional filtration radiation potential kV mm A1 mm Cu mm Sn BIPM 100 kV 100 1.2032 BIPM 135 kV 135 0.2321 BIPM 180 kV 180 0.4847 BIPM 250 kV 250 1.5701 NIST M60 60 1.51 NIST M100 100 5.0 NIST M150 150 5.0 0.25 NIST M200 200 4.1 1.12 NIST M250 250 5.0 3.2 NIST M300 300 4.0 6.5 Reference Half-value layer Air-kerma radiation (HVL) rate mm A1 mm Cu mGy [s.sup.-1] BIPM 100 kV 4.027 0.148 0.21 BIPM 135 kV 0.494 0.21 BIPM 180 kV 0.990 0.30 BIPM 250 kV 2.500 0.39 NIST M60 1.68 0.052 0.58 NIST M100 5.0 0.20 0.59 NIST M150 10.2 0.67 0.78 NIST M200 14.9 1.69 0.87 NIST M250 18.5 3.2 0.80 NIST M300 22 5.3 0.32 Table 4.
I used a standard single-phase x-ray generator to produce a consistent 70 kVp beam with a half-value layer of 2.7 mm al eq.