TY - JOUR
AU - Goldenson, Jerome
AB - VOL. 18, No. 5, 1964 155 once been purged of air, so that the arc may be ignited within a few seconds after the gas flow has been started. At the more rapid gas flow, a 200 ft 8 cylinder of gas will last for ten hr of continuous operation, and the gas may be conserved by turning it off while changing the electrodes. For this purpose, it is convenient to in- stall a lever-operated (toggle) valve in the gas flow sys- tem so that the gas can be turned on and off rapidly without disturbing the setting of the control valve. Because the electrodes can be changed easily and be- cause it is not necessary to flush the unit for a long period before starting the arc, a device of the type described makes it possible to vaporize and excite samples rapidly and conveniently in an atmosphere of almost any desired composition. In addition, the sheath-like flow of gas stabilizes the arc to a marked degree, presumably by overcoming the convection currents which ordinarily cause the arc to wander. The device, which may be called a gas-sheathed arc, has been used successfully with at- mospheres of helium and 
TI - The Phosphoryl Doublet in Infrared Spectra of Organic Phosphorus Compounds as an Index of Purity
JF - Applied Spectroscopy
DO - 10.1366/000370264789620358
DA - 1964-09-01
UR - https://www.deepdyve.com/lp/sage/the-phosphoryl-doublet-in-infrared-spectra-of-organic-phosphorus-bJ70vyWN7y
SP - 155
EP - 157
VL - 18
IS - 5
DP - DeepDyve
ER -