Seksan Dheandhanoo

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We determined the respective pressure-broadening coefficients of HCl, HBr, Cl2, and O2 (expressed relative to that of the reference gas N2) for the (v1,v2,v3)J(Ka,Kc) = (0,0,0)3(0,3) --> (1,0,1)2(0,2) rovibrational transition of H2 16O that occurs at 1.39253 microm. The experiment used a continuous-wave cavity ring-down spectroscopy analyzer to measure the(More)
The use of ion mobility spectrometry (IMS) for the determination of trace moisture and oxygen in bulk nitrogen has been explored. IMS utilizes atmospheric pressure ionization to ionize trace impurities in the sample gas. Mobility differences between trace impurity ions are exploited to separate these ions. Our results indicate that an IMS can indeed be used(More)
Ion mobility spectrometry (IMS) is capable of providing real-time analysis of several impurities in inert gases. Because of its poor peak resolution, the IMS is susceptible to peak interferences. Previous study has shown that the detection limit and accuracy of O2 measurement in N2 suffers from peak interference. In many applications, the interference can(More)
used for collisionally activated dissociation (CAD)], agrees to within 10% with the Rapp-Francis theory (impact parameter method in the two-state approximation), as corrected by Dewangan. We measured identical cr(E) from both the rate of reactant ion decay and the rate of product ion formation; i.e., our instrument is kinetically well behaved. The(More)
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