volume phase

volume phase

[′väl·yəm ‚fāz]
(geochemistry)
References in periodicals archive ?
Tenders invited for Volume phase holographic transmission gratings
Two papers from Italy described astronomic HOEs and volume phase holographic gratings (VPHGs) recorded on photopolymer materials.
The NIPAM component in the poly(NIPAM-VAA-AAm) microgels network undergoes a volume phase transition from swollen to shrunken (collapsed) state with increasing temperature.
T/(K) log D [DELTA]G/(kJ x [DELTA]S/(J x [mol.sup.-1]) [mol.sup.-1] x [K.sup.-1]) 283 1.44 -7.80 -65.12 293 1.25 -7.01 -65.60 303 1.05 -6.09 -66.47 313 0.92 -5.51 -66.20 323 0.86 -5.31 -64.77 TABLE 5: Effect of the volume phase ratio on Te(IV) extraction.
The core differentiator is the use of P&P Optica's high-efficiency, transmission-based Volume Phase Holographic (VPH) gratings, which provide average absolute diffraction efficiency greater than 75%, far more than the typical 35% of ruled and holographic gratings, and a signal-to-noise ratio of 100,000:1.
The series employs a Volume Phase Grating (VPG) as the spectral dispersion element and an InGaAs array detector as the detection element.
These calculations were made measuring the final salt concentration by conductimetry and the final external volume phase (W2), and performing a mass balance of the salt.
In addition, the Bayfol HX material was also used for astronomical Volume Phase Holographic Gratings (VPHGs).
The amount of surfactant affected on CPE by the following aspects: (1)Extraction rate; (2) Enrichment volume phase; (3) The process of phase separation.
That volume phase of the mining boom certainly hasn't ended yet."
The spectrometer integrates multiple volume phase gratings customized for each specific wavelength region and deep-cooled InGaAs array detectors, providing maximized light throughput.