Hyperfine Structure of HD17O by Beamhyphen;Maser Spectroscopy

摘要

Hyperfine structure of the 22rarr;21rotational transition of HD17O at 10.374 GHz has been investigated with a beamhyphen;maser spectrometer. The besthyphen;fit results for the spinndash;rotation coupling constantsCJtgr;lpar;Krpar;and for the componentskhgr;ijlpar;Krpar;of the quadrupole coupling tensors in their principal coordinate systems are in kHz:C22lpar;Hrpar;thinsp;equals;thinsp;minus;thinsp;42.20thinsp;plusmn;thinsp;0.20; C21lpar;Hrpar;thinsp;equals;thinsp;minus;thinsp;42.98thinsp;plusmn;thinsp;0.20; C22lpar;Drpar;thinsp;equals;thinsp;minus;thinsp;2.04thinsp;plusmn;thinsp;0.02; C21lpar;Drpar;thinsp;equals;thinsp;minus;thinsp;2.0000thinsp;plusmn;thinsp;0.0015; C22lpar;Orpar;thinsp;equals;thinsp;minus;thinsp;22.5thinsp;plusmn;thinsp;0.3; C21lpar;Orpar;thinsp;equals;thinsp;minus;thinsp;22.35thinsp;plusmn;thinsp;0.20; khgr;xxlpar;Orpar;thinsp;equals;thinsp;10 175thinsp;plusmn;thinsp;67; khgr;yylpar;Orpar;thinsp;equals;thinsp;minus;thinsp;8 891thinsp;plusmn;thinsp;21; khgr;zzlpar;Orpar;thinsp;equals;thinsp;minus;thinsp;1283thinsp;plusmn;thinsp;87; khgr;xprime;xprime;lpar;Drpar;thinsp;equals;thinsp;307.90thinsp;plusmn;thinsp;0.14; khgr;zprime;zprime;lpar;Drpar;thinsp;equals;thinsp;minus;thinsp;133.13thinsp;plusmn;thinsp;0.14; khgr;yprime;yprime;lpar;Drpar;thinsp;equals;thinsp;minus;thinsp;174.78thinsp;plusmn;thinsp;0.29; eegr;lpar;Orpar;thinsp;equals;thinsp;lpar;khgr;zzlpar;Orpar;thinsp;minus;thinsp;khgr;yylpar;Orpar;rpar;thinsp;sol;thinsp;khgr;xxlpar;Orpar;thinsp;equals;thinsp;0.75thinsp;plusmn;thinsp;0.01. These results show good agreement with recentab initiocalculations and remove the discrepancy with the experimental results of Stevenson and Towneslpar;eegr;lpar;Orpar;thinsp;equals;thinsp;1.83thinsp;plusmn;thinsp;0.20rpar;.