Sentence examples for the counting efficiency from inspiring English sources

In fact, in this sample the counting efficiency and optical photon collection efficiency were relatively better than the other samples.

With the increase in source-to-detector distance, the extrinsic sensitivity decreases from 121.36 to 118.77 counts/s GBq, while the counting efficiency increases from 3.78 to 11.66%.

Additionally, diffusion losses in the whole system (including the neutralizer) are considered via the 'effective length', as well as the counting efficiency of the CPC in particular with respect to their lower cut-off diameters50.

Preconditioning the polydisperse sample using a thermodenuder at 100 or even 250 °C slightly increased the counting efficiency of the N-WCPC, but this still remained below the counts of the butanol CPC.

The test results show that the counting efficiency of 0.3μm gear is above 70%, 0.5μm gear and 1.0μm gear are both reached more than 90%, and the dispersion coefficient of each gear is very nearly the same, compared with the standard machine of Kanomax 3886 under the particle spraying flow of 2.5SCFH, 3.0SCFH, 3.5SCFH.

These changes may have an impact on the counting efficiency and may need to be considered during a measurement.

N total is the total counting rate (cpm); A stands for each nuclide's β-activity (dpm); λ is the decay constant of 90Y; t is the elapsed time; and m1 and m2 are the counting efficiencies of 90Sr and 90Y, respectively.

The counting efficiencies of the detectors were determined by repeated measurements of a NIST-traceable standard.

In the current report, we evaluated the probe counting efficiency and the success rate of in situ intraoperative detection of F-FDG-avid tissue sites (using the three-sigma statistical threshold criteria method and the ratiometric threshold criteria method) for three gamma detection probe systems tested during F-FDG-directed surgery.

The use of collimation in PET probe design has very divergent effects on the probe counting efficiency versus the resultant T/B ratio observed, with collimation reducing probe counting efficiency at F-FDG-avid tissue sites and increasing the T/B ratio observed at F-FDG-avid tissue sites [ 1, 19, 20].

When applying commercially-available PET probe systems for the detection of F-FDG-avid tissue sites, the probe counting efficiency falls off rapidly with increasing gamma energy levels [ 19, 20].