The phrase "at half peak" is correct and usable in written English.
It can be used in contexts related to measurements, performance levels, or intensity, often in fields like science, engineering, or music.
Example: "The signal strength was measured at half peak, indicating a moderate level of performance."
Alternatives: "at mid-level" or "at 50% peak".
Cary Eclipse fluorescent spectrophotometer uses pulsed xenon lamp (80 Hz; 2 μs pulse width at half peak height) for luminescence excitation, setting the intensity measured before each pulse (thus, in about 12.5 ms after previous pulse) as zero for the background correction.
Width at half peak height is indicative of the homogeneity of size and charge distribution.
A mass resolution of 0.7 Th at half peak width was used for both MS and tandem MS analyses performed by the QqQ mass spectrometer.
These central peaks reflected significant synchronization as their Z scores were higher than 3 (Figure 6A, z = 5.0±0.4), but they were quite broad (full width at half peak (HW) = 70±8.6 ms).
Narrow-bore columns produce extremely narrow peaks, with average peak widths at half peak height of less than 1 s, compared with almost 2 s using columns with 0.25-mm film thickness.
Red (Part number: SSL-LX5093SRC) and blue (Part number: VAOL-5LSBY2) LED arrays with a narrow output spectrum (20 nm bandwidth at half peak height) centered at 660 and 470 nm, respectively, were then purchased from LUMEX Inc. (Taiwan, China).
The chromatographic performance was evaluated both visually and by calculating chromatographic parameters such as capacity factor, resolution, peak width at half height, selectivity and peak asymmetry.
Where ε is the crystal lattice aberrance, d the space between crystal faces, Δd the error of the space between crystal faces, β the peak width at half height of diffraction peak, and θ is the half diffraction angle.
Using the well-known Scherrer equation, the sizes of magnetite nanoparticles (D, nm) were estimated based on the breadth at half-peak height of the X-ray diffraction (XRD) line corresponding to (311) reflections for the freshly prepared and modified SCWA samples (Table 4).
Approximate mass ranges of the proteins were calculated from elution times at half-peak height.
Peak widths (at half-peak height), in both dimensions, were extracted from each spectrum for well-resolved peaks.
