half-width

half-width

Half the width of a spectral line, measured at half the height. In some branches of spectroscopy it is customary to use the term to mean the full width at half height. See also equivalent width; line profile.

half-width

[′haf ¦width]
(mathematics)
For a function which has a maximum and falls off rapidly on either side of the maximum, the difference between the two values of the independent variable for which the dependent variable has one-half its maximum value.
References in periodicals archive ?
A new single-RU, half-width external interface box, with six analog four-wires and three GPIOs, can be directly connected to any antenna and then patched into an existing intercom system.
It supports up to five 1U half-width servers and can flexibly configure with 2U half-width and 1U full-width server sleds.
With no secondary runways, or even taxiways or roads that could be converted into temporary landing strips for aircraft during the construction period, Stantec and other designers turn toward half-width operations.
Perfect for broadcast sports and ENG news coverage with wireless cameras, the UltraReceiver is a 1RU half-width, rackmount chassis receiver.
In a study of several fairly unexceptional cold fronts, Browning and Pardoe (1973) identified moist prefrontal LLJs, often thousands of kilometers long, with peak velocities near 900 hPa of 25 to 31 m [s.sup.-1] and a rather narrow water-vapor flux half-width of from 650 km to as little as 170 km (see their Table 1).
The simplest Lorentzian and Voigt profiles provide retrieving only the homogeneous collision line half-width y and the line shift [DELTA].
The following parameters of the [Ca.sup.2+] traces were extracted: [DELTA]F/[F.sub.0] (where [DELTA]F = F- [F.sub.0] and [F.sub.0] is background subtracted), [Ca.sup.2+] transient duration in milliseconds, half-width ([Ca.sup.2+] transient duration measured at 50% of amplitude) in milliseconds, and frequency in hertz.
Several Gaussian modelling characteristics, including the peak amplitude, the peak time positions, and half-width of Gaussian waves, have been extracted from each Gaussian function to reflect the physiological changes of peripheral circulatory system.
Figure 5 shows the half-width of the jet as a function of the axial location for Cases 0 and 1.
Lorentz half-width, [[alpha].sup.i,g.sub.L], the amount of broadening depends on the molecules involved in collisions.
Experiments (e.g., Bradbury, 1965; see the review by Pope, 2000) show that the plane jet half-width [x.sup.*](z) is a linear function of z.
Its innovative half-width, 1U high form factor allows dual- connectivity to storage arrays, flash shelves, and flash- accelerated servers for high-availability at speeds ideal for supporting flash storage.