About: Mössbauer effect is a research topic. Over the lifetime, 427 publications have been published within this topic receiving 5702 citations. The topic is also known as: recoilless nuclear resonance fluorescence.
TL;DR: In this article, the recoilless emission and resonant absorption of low energy γ-rays by solids (Mossbauer effect) are reviewed, with particular reference to the present and future applications to solid state and nuclear physics.
Abstract: The recoilless emission and resonant absorption of low energy γ-rays by solids (Mossbauer effect) are reviewed, with particular reference to the present and future applications to solid state and nuclear physics.
TL;DR: In this paper, the Mossbauer effect has been used in the study of nuclear gamma ray absorption in crystalline systems, and the theory of the effect and its practical details are presented.
Abstract: Recoil-free emission and resonant absorption of nuclear gamma rays (i.e., the Mossbauer effect) has proven to be an effective tool in the study of certain physical and chemical properties of crystalline systems. The theory of the effect, as well as certain practical details, are presented. On this basis the experimental work on inorganic glasses is discussed and the usefulness of the tool in such systems assessed.
TL;DR: In this article, it was shown that antiferromagnetic ordering begins at around 80±10 K with hyperfine fields of about 16−20 kOe. And the existence of anitferromagnetism has been obtained by measuring the films in a longitudinal (parallel to the γ-ray direction) external magnetic field.
Abstract: Thin iron films (∼18 A and 90% enriched in Fe57) were prepared on (001) Cu single‐crystal substrates. The fcc structure was verified by electron microscopy. By Mossbauer spectroscopy it was found that antiferromagnetic ordering begins at around 80±10 K with hyperfine fields of about 16–20 kOe. Additional proof for the existence of anitferromagnetism has been obtained by measuring the films in a longitudinal (parallel to the γ‐ray direction) external magnetic field. The apparent discrepancy in the literature of ferromagnetic and antiferromagnetic ordering in fcc films might be resolved by taking into account the differences concerning the film orientations.
TL;DR: In this paper, the authors focus on the applications of 119mSn Mӧssbauer spectroscopy to the study of organotin compounds and show that in any resonance experiment the resonance condition is best observed by systematically perturbing the system and then noting the influence of the variation on the measurable parameters.
Abstract: Publisher Summary This chapter focuses on the applications of 119mSn Mӧssbauer spectroscopy to the study of organotin compounds. The phenomenon of resonance depends on having a pair of systems, the emitter of energy and the absorber, with nearly the same characteristic frequencies. The emission of radiation arises from transitions between discrete electronic energy levels with both the emitting and the absorbing sodium atoms having the same level separation. The energies involved in the nuclear transitions are much larger than those in atoms, but the natural widths of the spectral lines are about the same. In any resonance experiment the resonance condition is best observed by systematically perturbing the system and then noting the influence of the variation on the measurable parameters. In chemical applications of the Mossbauer effect the source and absorber nuclei are usually in different chemical states.
TL;DR: In this paper, an extension of Mossbauer's technique was used to directly observe the frequency distribution of lattice vibrations in the crystal, where the emitter and absorber had the same favorable crystal structure, and the self-absorption cross section observed in a rotor experiment at low temperature was proportional to the number of phonon states in an energy interval dS, where S is the doppler shift in the gamma-ray energy induced by rotor motion.