Hadronic deuteron polarizability contribution to the Lamb shift in muonic deuterium

Hadronic deuteron polarizability correction to the Lamb shift of muonic deuterium is calculated on the basis of unitary isobar model and modern experimental data on the structure functions of deep inelastic lepton–deuteron scattering and their parametrizations in the resonance and nonresonance regions.

The synthesis, photophysical and dielectric properties of ball-type dinuclear zinc phthalocyanine

The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR,1H NMR and mass spectroscopies. The ΦFvalue was 0.16 and ΦTvalue was 0.72. The complex showed reasonably long triplet lifetimes with τT7210 μs in DMSO. The frequency and temperature dependence of the dielectric properties of ZnPc were also investigated in the frequency range of 40–105Hz and in the temperature range of 300–440 °K. It has been observed that both dielectric constant ε′ and dielectric loss ε″ decrease with the rise in frequency as they increase with the rise in temperature. The decrease in ε′ with increasing frequency is attributed to the fact that as the frequency increases, the polarizability contribution from orientation sources decreases and finally disappears.

NUCLEUS POLARIZABILITY CONTRIBUTION TO THE HYDROGEN–DEUTERIUM ISOTOPE SHIFT

The correction to the hydrogen–deuterium isotope shift due to the proton and deuteron polarizability is evaluated on the basis of modern experimental data on the structure functions of inelastic lepton–nucleus scattering. The numerical value of this contribution is equal to 63 ± 12 Hz.