Summary
General equations are derived for the computation of 〈F z 〉 in an alkali vapour submitted to optical pumping withD 1 orD 2 line, in an absorption cell without wall coating and with a buffer gas. Extensive numerical computations have been performed in view of ascertaining the relative importance of the relevant parameters, and some conclusions are drawn about the possible uses of optical pumping in the study of the excited state collisional mixing and in the construction of polarized targets.
Riassunto
Si ricavano equazioni generali per il calcolo di 〈F z 〉 in un vapore alcalino pompato otticamente con la rigaD 1 oppureD 2 in una cella di assorbimento senza trattamento superficiale e con un gas tampone. Sono stati fatti ampi calcoli allo scopo di determinare l’importanza relativa dei vari parametri implicati, e sono state tratte alcune conclusioni relative ai possibili usi del pompaggio ottico nello studio del mescolamento per urti nello stato eccitato e nella preparazione di targhette polarizzate.
Реэюме
Выводятся уравнения для вычисления 〈F z 〉 в шелочном паре, подверженном оптической накачке линиейD 1 илиD 2 в абсорбционной ячейка беэ облицованной стенки и с буферным гаэом. Были выполнены общирные численные вычисления для установления относительной важности параметров, и сделаны некоторые эаключения о воэможности испольэования оптической накачки для иэучения соударяюшейся смеси в воэбужденном состоянии, и для конструирования поляриэованных мищеней.
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References
H. G. Dehmelt:Phys. Rev.,105, 1487 (1957).
W. Franzen andA. G. Emslie:Phys. Rev.,108, 1453 (1957).
J. Fricke andJ. Haas:Zeits. Naturf.,21 a, 1319 (1966).
For a review of the problems involved, seee.g. W. Ermisch:Beitr. Plasmaphys.,6, 73 (1966);Ann. der Phys.,18, 271 (1966).
W. Berdowski, R. Seiwert andL. Krause: paper submitted to theXIV Colloque Ampere (Ljubljana, 1966);W. Berdowski andL. Krause:Phys. Rev.,165, 158 (1368).
A. Gallagher:Phys. Rev.,157, 68 (1967).
F. A. Franz andJ. R. Franz:Phys. Rev.,148, 82 (1966).
J. Yellin: UCRL 17175 (1966) (unpublished).
J. P. Barrat andC. Cohen-Tannoudji:Journ. Phys. Rad.,22, 329, 433 (1961).
For a review of sensitized fluorescence, seeL. Krause:Appl. Optics,5, 1375 (1966).
Seee.g.,R. G. Breene jr.:The Shift and Shape of Spectral Lines (Oxford, 1961).
P. Violino:Suppl. Nuovo Cimento (to be published).
This cross-section is not referenced to any particular observable (orientation, alignment, etc.), but is defined by eq. (4).
J. H. Stamper:Journ. Chem. Phys.,43, 759 (1965);E. E. Nikitin andV. K. Bykhovskii:Opt. Spectry,17, 444 (1965).
A review of the quenching of Na and some data for K can be found inH. P. Hooymayers andC. T. Alkemade:Journ. Quant. Spectr. and Radiat. Transf.,6, 847 (1966).
G. D. Chapman:Ph. D. Thesis (University of Windsor, 1965) (unpublished).
N. J. Ionescu-Pallas:Studii Cerc. Fiz.,11, 585 (1960);N. J. Ionescu-Pallas andV. G. A. Velculescu:Rev. Roum. Phys.,8, 47 (1963).
These models have been simply chosen to have three quite different models, and not because we suppose that these models are more likely to be actually verified than others. For computational purposes we have used for the models 1 and 2 the transition probability matrices given in ref. (7).
P. Minguzzi, F. Strumia andP. Violino:Nuovo Cimento,46 B, 145 (1966).
E. U. Condon andG. H. Shortley:The Theory of Atomic Spectra (Cambridge, 1935).
For general reference, seee.g. Landolt-Börnstein:Zahlenwerte und Funktionen (Berlin), orC. J. Smithells:Metal Reference Book (London, 1962). For pressure broadening and shift seeS. Y. Ch’en andM. Takeo:Rev. Mod. Phys.,29, 20 (1957); additional values have been obtained byF. Strumia:Nuovo Cimento,44 B, 387 (1966);S. Y. Ch’en, R. O. Garrett andE. C. Looi:Phys. Rev.,156, 48 (1967). For quenching see ref. (15) andD. A. McGillis andL. Krause:Phys. Rev.,153, 44 (1967). For collisional mixing see ref. (5,6). For sensitized fluorescence, in addition to ref. (10), seeR. Seiwert:Ann. der Phys.,18, 54 (1956);J. A. Jordan jr. andP. A. Franken:Phys. Rev.,142, 20 (1966), and the paper byMcGillis andKrause quoted above. For ground state relaxation see ref. (12) orR. A. Bernheim:Optical Pumping (New York, 1965).
E. T. Goodwin:Proc. Cambr. Phil. Soc.,45, 241 (1949).
F. Masnou-Seeuws andM. A. Bouchiat:Journ. Phys.,28, 406 (1967).
R. Marrus andJ. Yellin:Phys. Rev.,141, 130 (1966);J. Yellin:Ph. D. Thesis (University of California, 1965) (unpublished).
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Violino, P. Optical pumping rates in an alkali vapour in the presence of a buffer gas. Nuovo Cimento B (1965-1970) 54, 61–79 (1968). https://doi.org/10.1007/BF02711526
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DOI: https://doi.org/10.1007/BF02711526