SELF-BROADENING IN THE NU(1) BAND OF NH3

被引:48
作者
MARKOV, VN
PINE, AS
BUFFA, G
TARRINI, O
机构
[1] NATL INST STAND & TECHNOL,DIV MOLEC PHYS,GAITHERSBURG,MD 20899
[2] UNIV PISA,DIPARTIMENTO FIS,I-56100 PISA,ITALY
[3] NIZHNY NOVGOROD ACAD SCI,INST APPL PHYS,NIZHNII NOVGOROD,RUSSIA
关键词
D O I
10.1016/0022-4073(93)90115-X
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Self-broadening coefficients, pressure shifts and integrated intensities have been measured for Q- and R-branch transitions in the nu1 fundamental band of ammonia using a difference-frequency laser spectrometer. A strong, systematic J and K dependence of the broadening coefficients, reminiscent of the ground-state inversion transitions, is observed and compared with semiclassical line broadening calculations. Dicke narrowing is evident at intermediate pressures for the sharpest lines, primarily the R(J, 0) transitions. Incipient line mixing is apparent in the Q branch at pressures above approximately 0.1 bar.
引用
收藏
页码:167 / 178
页数:12
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