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THE LINESHAPE OF POWER BROADENED MICROWAVE TRANSITIONS: A REANALYSIS OF THE LINESHAPES OF TRANSITIONS IN $^{15}NH_{3}$ and $^{15}NH_{3} +H_{2}$ $MIXTURES^{*}$

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dc.creator Schwendeman, R. H. en_US
dc.date.accessioned 2006-06-15T14:34:51Z
dc.date.available 2006-06-15T14:34:51Z
dc.date.issued 1980 en_US
dc.identifier 1980-TC-8 en_US
dc.identifier.uri http://hdl.handle.net/1811/11364
dc.description $^{*}$This work was supported by the National Science Foundation. $^{1}$R. H. Schwendeman and T. Amano, J. Chem. Phys. 70, 762 (1979). $^{2}$T. Amano and R. H. Schwendeman, J. Chem. Phys. 65, 5133 (1976). en_US
dc.description Author Institution: en_US
dc.description.abstract A new steady-state lineshape function has been derived for collision-broadened transitions between spatially degenerate levels under conditions of partial saturation by an applied plane-polarized microwave fields. The new function, which is in the form of a continued fraction, is a steady-state solutions of the equations obtained after spherical tensor transformation of the usual equations (J.M basis) for the time development of the density matrix for a two-level system with spatial M degeneracy. Derivation of the new equation was motivated by a comparison of $qT_{1}$/$T_{2}$ $values^{1}$ obtained by reanalysis of data taken at several sample pressures for transitions in pure $^{15}NH_{3}$ and in dilute mixtures of $^{15}NH_{3}$ in $H_{2}$. The values of qT/$_{1}$/$T_{2}$ showed a considerably greater pressure dependence than previously obtained $(T_{1}/T_{2})_{0}$ $values,^{2}$ and the reasons for and implications of this difference will be discussed in terms of the new lineshape function. en_US
dc.format.extent 117157 bytes
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dc.language.iso English en_US
dc.title THE LINESHAPE OF POWER BROADENED MICROWAVE TRANSITIONS: A REANALYSIS OF THE LINESHAPES OF TRANSITIONS IN $^{15}NH_{3}$ and $^{15}NH_{3} +H_{2}$ $MIXTURES^{*}$ en_US
dc.type article en_US