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Bernshtein, A. S.; Dzhoskhadze, Sh. R.; Perova, N. I.; Vinokurov, V. I.; Kaplin, S. I.; Malanchenko, V. P.; Petelin, I. G.; Ignatov, V. A.; Мордвинов, В. А.; Klyuev, V. V.; Kurozaev, V. P.; Fedosenko, Yu. K.; Kozlov, V. S.; Pranitskii, A. A.; Tsesler, L. B.; Savorovskii, N. S.; Stolyarskii, �.; Serdyukov, V. M.; Grigorenko, A. G.; Krivelev, L. I.; Shmidt, O. Yu.

doi:10.1007/bf00825340

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“…(6) we neglect bound-free transitions. This approximation can be justified by the different initial conditions for the problem of luminescence, in contrast to the problem of ordinary recombination [10]. For the latter case these conditions…”

Section: Quantum Yield In the Subordinate Linesmentioning

confidence: 99%

“…The method used in the present work for the estimations of quantum yield q ij was first proposed in [10] for an arbitrary type of initial CMB distortions and applied later in [11,12] for the calculations of CMB distortions from primary molecules. By definition, the quantum yield q ij is the ratio of mean number of photons of specified frequency emitted in transition from the upper level i to the lower level j to the number of resonant photons in the pumping channel.…”

Section: Introductionmentioning

confidence: 99%

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Local burst model of CMB temperature fluctuations: luminescence in lines of primary para- and orthohelium

Дубрович

Грачев

Zalialiutdinov

2018

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We have considered the formation of the luminescent subordinate HeI lines by the absorption of continuum radiation from a source in the lines of the main HeI series in the expanding Universe. It is suggested that at some moment of time, corresponding to the redshift z0, a burst of superequilibrium blackbody radiation with a temperature T + ∆T occurs. This radiation is partially absorbed at different z < z0 in the lines of the main HeI series and then converted into the radiation of subordinate lines. If νij is the laboratory frequency of the transition of some subordinate line originating at some z, then in the present time its frequency will be ν = νij/(1 + z). For different z (and, consequently, for different ν), the quantum yield for the subordinate lines of para-and orthohelium -the number of photons emitted in the subordinate line, per one initial excited atom and line profiles are calculated. Different pumping channels were considered. Spatial and angular distributions of radiation intensity of luminescent lines for the spherically symmetric radiation sources are presented. It is shown that for sufficiently large ∆T /T , the luminescent lines can be very noticeable in the spectrum of blackbody background radiation.

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Section: Quantum Yield In the Subordinate Linesmentioning

confidence: 99%