Etymology: See flanch n.2
1. A widening or branching out; the part that widens out:
†a. in a pan.
b. in a metallic vein.
2. A projecting flat rim, collar, or rib, used to strengthen an object, to guide it, to keep it in place, to facilitate its attachment to another object, or for other purposes.
3.a. Any rim or projecting surface.
b. A flattened-out disc. Also, blank-flange.
c. transf. Of natural objects: a rim or fan which stands out from the main part of the object. Also fig. (OED)
"An open, cylindrical Penning trap was constructed from OFHC copper stock and assembled with ceramic spacers, aluminum support rods, and titanium machine screws. The cell assembly was secured on a 4.625-in.-diameter conflat-type flange at the far end of the high vacuum region. Note that the vacuum manifold is pumped from only one end; in addition, the second quadrupole terminates ~20 cm from the cell flange. As a result, we chose somewhat atypical dimensions for the cell electrodes (trap plates, 1.125-in. length; excite/detect plates, 3.5-in. length), in an attempt to obtain an acceptable compromise between trapping field quadrupolarity, excitation field linearity, and overall ion storage capacity."
- Martin et al., "Subfemtomole MS and MS/MS peptide sequence analysis using nano-HPLC micro-ESI Fourier transform ion cyclotron resonance mass spectrometry", Analytical Chemistry 72: 4266 (2000).
1 comment:
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