Transmission and line broadening of resonance radiation incident on a resonance absorber

Margulies, S.; Ehrman, J.R.

doi:10.1016/0029-554x(61)90122-7

Cited by 395 publications

(113 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The samples were contained in a Plexiglas holder. In our experimental conditions we can use the thin absorber approximation in the analysis of the experimental data because t is equal or less than 1 [10,11].…”

Section: Methodsmentioning

confidence: 99%

Local Structure of Europium Sites in Oxide Glasses by Nuclear Gamma Resonance

Concas

Spano

Carrada

et al. 1999

Zeitschrift Für Naturforschung A

View full text Add to dashboard Cite

The symmetry and disorder of the Eu 3+ site was investigated in some phosphate and borate glasses by means of 151 Eu Mössbauer spectroscopy. The quadrupole interaction parameter, which is due to the distortion of the Eu site compared to a cubic symmetry, has been measured together with the asymmetry parameter, which points out the absence of a threefold or fourfold axis of symmetry at the rare earth site. The correlation of the isomer shift with the optical basicity of the glass indicates a covalent component with 6s character in the Eu-0 bond. The axial component of the electric field gradient at the Eu site is also correlated with the optical basicity.

show abstract

Section: Methodsmentioning

confidence: 99%

Local Structure of Europium Sites in Oxide Glasses by Nuclear Gamma Resonance

Concas

Spano

Carrada

et al. 1999

Zeitschrift Für Naturforschung A

View full text Add to dashboard Cite

show abstract

“…The effective thickness of the absorber is T A = 13.2, isomer shift is −0.1 mm/sec. The effective thickness was found using the fitting of the transmission integral to the experimental spectrum [43].…”

Section: Methodsmentioning

confidence: 99%

Application of the Mössbauer effect to the study of subnanometer harmonic displacements in thin solids

Shakhmuratov

Vagizov

2017

Phys. Rev. B

View full text Add to dashboard Cite

We measure subnanometer displacements of thin samples vibrated by piezotransducer. Samples contain 57 Fe nuclei, which are exposed to 14.4 keV γ-radiation. Vibration produces sidebands from a single absorption line of the sample. The sideband intensities depend on the vibration amplitude and its distribution along the sample. We developed a model of this distribution, which adequately describes the spectra of powder and stainless steel (SS) absorbers. We propose to filter γ-radiation through a small round hole in the lead mask, placed before the absorber. In this case only a small spot of the vibrated absorber is observed. We found for SS foil that nuclei, exposed to γ-radiation in this small spot, vibrate with almost the same amplitudes whose difference does not exceed a few picometers within the irradiated area.

show abstract

“…Since T > 1, the resonance line shape of the Mössbauer spectrum was described using a transmission integral formula. 25 The source linewidth Γ s = 0.107 mm/s and the background-corrected Debye-Waller factor of the source f * s , 25 which were derived from the fit of the Mössbauer spectrum of the Fe foil, were used. As the electric quadrupole interaction is significantly smaller than the magnetic dipole interaction in the compound studied, the 57 Fe Zeeman spectra at temperatures below T N were analyzed using a first-order perturbation treatment.…”

mentioning

confidence: 99%