For blue-shifted hydrogen-bonded systems, the hydrogen stretching frequency increases rather than decreases on complexation. In computations at various levels of theory, the blue-shift in the archetypical system, F(3)C-H.FH, is reproduced at the Hartree-Fock level, indicating that electron correlation is not the primary cause. Calculations also demonstrate that a blue-shift does not require eit...

We study the nuclear stopping in high energy nuclear collisions using the constituent quark model. It is assumed that wounded nucleons with different number of interacted quarks hadronize in different ways. The probabilities of having such wounded nucleons are evaluated for proton-proton, protonnucleus and nucleus-nucleus collisions. After examining our model in protonproton and proton-nucleus ...

Collinear laser spectroscopy of the $N=Z=21$ self-conjugate nucleus $^{42}$Sc has been performed at JYFL IGISOL IV facility in order to determine change nuclear mean-square charge radius between $I^{\pi}=0^{+}$ ground state and $I^{\pi}=7^{+}$ isomer via measurement $^{42\mathrm{g},42\mathrm{m}}$Sc shift. New multi-configurational Dirac-Fock calculations for atomic mass shift field factors have...

Since the use of two-dimensional NMR for correlating the spectra of coupled heteronuclei was first proposed in 1977 (I), a considerable number of papers have appeared describing different techniques for heteronuclear correlation (2-8). The most widely used method (5, 9-12) produces a two-dimensional spectrum in which one signal appears for each directly bonded carbon-hydrogen pair in a molecule...

Infrared multiphoton dissociation spectra of three homogeneous and two heterogeneous proton-bound dimers were recorded in the gas phase. Comparison of the experimental infrared spectra recorded in the fingerprint region of the proton-bound dimers with spectra predicted by electronic structure calculations shows that all modes which are observed contain motion of the proton oscillating between t...