The lifetime of the antisymmetric stretch mode of interstitial oxygen in crystalline Si is measured directly by time-resolved, transient bleaching spectroscopy to be T1 = 229 ± 16 ps at 10 K. The temperature dependence of the lifetime shows that the stretch mode decays into eight vibrational modes of 142 ± 20 cm. The low-temperature width of the FTIR (IR) absorption line due to the stretch mode...

Stark broadening of Zeeman absorption lines caused by inhomogeneous electric fields in highly compensated Ge has been studied by means of far-infrared magneto-optical absorption spectroscopy measurements. A number of transmutation-doped Ge single crystals with a systematically varying compensation ratio were employed. The broadening of the full width at half maximum ~FWHM! of an absorption line...

The line-broadening of a sample of a powder of non-stoichiometric hexagonal ε-iron nitride with the average composition FeN0.433 was analysed by X-ray diffraction. A nearly Gaussian purely strain-like broadening was observed. The broadening is strongly orientation dependent. For each direction of the diffraction vector relative to the crystallographic axes the width of the reflections varies pr...

In response to a comment on their previous note about the Voigt line profile, here the authors clarify relevant statements and numeric algorithms in the original note. In Huang and Yung (2004, hereafter HY04) we described a mistake commonly found in several textbooks regarding the Voigt line profile. Five years after the original note was published, Schreier (2009; see also the associated corri...

Nanometer-sized metal particles exhibit broadening of the localized surface plasmon resonance (LSPR) in comparison to its value predicted by the classical Mie theory. Using our model for the LSPR dependence on non-local surface screening and size quantization, we quantitatively relate the observed plasmon width to the nanoparticle radius R and the permittivity of the surrounding medium ε(m). Fo...

We calculated the mass and width of the d′ resonance inside nuclei within a nucleon-∆ model by including the self-energy of the ∆ in the N∆ propagator. We found that in the nuclear medium the width of the d′ is increased by one order of magnitude while its mass changes only by a few MeV. This broadening of the width of the d′ resonance embedded in nuclei is consistent with the experimental obse...

Shift and broadening of isolated neutral Helium lines 7281Å (2P − 3S), 6678Å (2P − 3D), and 4713Å (2P − 4S) in a dense plasma are investigated. Based on a quantum statistical theory using thermodynamic Green’s functions, where the electronic contributions to the shift and width are considered. Dynamical screening of the electron-atom interactions are included. Compared to the width, the electro...