Summary
A theory is developed forrotational absorption of gases at high pressure. Absorption is shown to be the sum of a Debye-type zero-frequency line, due to molecules whose rotational freedom is destroyed by a strong intermolecular interaction, plus a resonating component. A study of the line mixing is given for the latter. The agreement with experiement is satisfactory.
Riassunto
Si sviluppa una teoria per l'assorbimento rotazionale dei gas ad alta pressione. Si mostra che l'assorbimento è la somma di una riga Debye a frequenza zero, dovuta alle molecole la cui libertà rotazionale è distrutta da una forte interazione intermolecolare, più una componente risonante. Per essa si studia la mescolanza di righe. L'accordo con l'esperimento è soddisfacente.
Резюме
Развивается теория для вращательного поглощения газов высоком давлении. Показывается, что поглощение представляет суммы дебаевской линии с нулевой частотой, которая обусловлена молекулами, ротационная свобода которых нарушается из-за сильного межмолекулярного взаимодействия, плюс резонансная компонента. Для последней компоненты проводится изучение смещиванию линий. Получается удовлетворительное согласие с экспериментом.
Similar content being viewed by others
References
E. C. Morris:Aust. Journ. Phys.,24, 157 (1971);J. C. Andrews:Aust. Journ. Phys.,25, 283 (1972).
L. Frenkel:Journ. Molec. Spectrosc.,26, 227 (1968).
A. Battaglia: private communication.
M. Baranger:Phys. Rev.,111, 481, 394 (1968).
A. Ben Reuven:Phys. Rev.,145, 7 (1966).
P. W. Anderson:Phys. Rev.,90, 791 (1953).
C. T. Tsao andI. Cornutte:Journt. Quant. Spect. Radiative Transfer,2, 41 (1964).
A. Di Giacomo andO. Tarrini:Phys. Rev. A,7, 837 (1973).
A. Di Giacomo:Nuovo Cimento,34, 473 (1964).
Notice that in our arguments we consider all lines as overlapping. This is true at reasonable values of pressure forl,l +,l −.l and\(\bar l\) will be in general well separated and therefore their interference even more depressed by energy conservation, according to the discussion of Subsect.3 ·2.
C. H. Townes andA. L. Schalow:Microwave Spectroscopy (New York, N. Y.,1955).
M. E. Rose:Elementary Theory of Angular Momentum (New York, N. Y., 1957).
Author information
Authors and Affiliations
Additional information
To speed up publication, the authors of this paper have agreed to not receive the proofs for correction.
Перевебено ребакцией.
Rights and permissions
About this article
Cite this article
Buffa, G., Tarrini, O. & Di Giacomo, A. Rotational absorption of gases at high pressures. Nuovo Cim B 20, 281–302 (1974). https://doi.org/10.1007/BF02721569
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/BF02721569