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Spontaneous otoacoustic emissions in schoolchildren
International Journal of Pediatric Otorhinolaryngology, 2016Spontaneous otoacoustic emissions (SOAEs) are one of the least studied types of otoacoustic emissions (OAEs). The purpose of this study was twofold: first, to determine the prevalence of SOAEs in schoolchildren, and second to test whether there was dependence between the presence or absence of SOAEs in a subject and the corresponding level of their ...
W. Wiktor Jedrzejczak +3 more
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Relativistic theory of spontaneous emission
Physical Review A, 1988We derive a formula for the relativistic decay rates in atoms in a formulation of quantum electrodynamics based upon the electron's self-energy. Relativistic Coulomb wave functions are used, the full spin calculation is carried out, and the dipole approximation is not employed.
, Barut, , Salamin
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A Case of 'Spontaneous Otoacoustic Emission'
Archives of Otolaryngology - Head and Neck Surgery, 1987A 25-year-old man produced a continuous high-pitched pure tone (6.1 kHz, 37.2-dB sound pressure level) in his right ear. The tone was not audible to the patient. He had sensorineural deafness over 1 kHz with a dip of 45 dB at 6 kHz. The tone was considered to be emitted through the eardrum from the inner ear, ie, a "spontaneous otoacoustic emission".
E, Yamamoto +3 more
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Search for the spontaneous emission of pions
Physical Review C, 1989A search has been made for the spontaneous emission of neutral pions from Pb, Bi, Th, U, and /sup 252/Cf. None has been observed and for the most likely candidate, /sup 252/Cf, the limit is 3.3 x 10/sup -10/ of spontaneous fission with a 90% confidence level.
, Stanislaus, , Armstrong, , Measday
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Dynamical suppression of spontaneous emission
Physical Review Letters, 1987We study the influence of a strong resonant driving field on the spectral properties of a single, cavity-confined, two-level atom. Under conditions of atom-cavity resonance, the lines of the Mollow resonance fluorescence triplet are found to narrow with increasing driving field strength, indicating a dynamical decoupling of the atom from the vacuum ...
, Lewenstein, , Mossberg, , Glauber
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Squeezing of spontaneous emission in a laser
Physical Review Letters, 1987It is predicted that a laser's phase-diffusion rate (its Schawlow-Townes linewidth) may be reduced by as much as one-half when the laser is coupled out to ''squeezed vacuum'' as opposed to ordinary vacuum. The effect is important because it is directly related to spontaneous emission in a squeezed vacuum. It shows that a part of spontaneous emission is
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Random Walks with Spontaneous Emission
Journal of the Society for Industrial and Applied Mathematics, 1961the rate of one step every T2 seconds. We assume, as usual, that two kinds of sites exist in the lattice, "6ordinary" or "good" ones and a fraction q of "'absorbhig" or "bad" ones, the latter having the property of absorbing the particle if it chances upon one of them, thus terminating the walk.
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Spontaneous emission in the optical microscopic cavity
Physical Review A, 1991The quantum theory of the spontaneous emission (SpE) from an active microscopic cavity (microcavity) is given with emphasis on mirror separations of the order of the optical wavelength. The theory is based on a complete set of orthonormal-mode functions that include both transverse polarizations and span the infinite three dimensional space that ...
Francesco DE MARTINI +4 more
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American Journal of Physics, 1984
This paper is a discussion of that perennial question, ‘‘Why does an excited atom radiate?’’ A satisfactory physical picture emerges when proper account is taken of the interplay between radiation reaction and the (quantum-mechanical) zero-point fluctuations of the radiation field.
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This paper is a discussion of that perennial question, ‘‘Why does an excited atom radiate?’’ A satisfactory physical picture emerges when proper account is taken of the interplay between radiation reaction and the (quantum-mechanical) zero-point fluctuations of the radiation field.
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