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Antimony borate glasses of the composition 30PbO-25Sb2O3-(45-x)B2O3-xEr2O3 with x = 0 to 1.0 in steps of 0.2 were prepared by the melt-quenching method. Various physical parameters. radiative parameters, transition probability A, branching ratio β and the radiative life time τ for different emission levels of Er3+ ions, have been evaluated. [ABSTRACT FROM AUTHOR]

Beta decays of N=126 isotones are studied by shell model calculations by including both the Gamow-Teller (GT) and first-forbidden (FF) transitions. The half-lives of the isotones are found to be reduced considerably by the the contributions from the FF transitions, and short compared to the standard half-lives usually used for the nucleosynthesis network calculations. Possible implications of the short half-lives of the waiting point nuclei on the r-process nucleosynthesis during the supernova explosions are discussed. [ABSTRACT FROM AUTHOR]

Absorption and emission spectra of 0.5 mol% of Eu3+ in different chlorophosphate glasses have been studied. Judd-Ofelt analysis was performed to evaluate the emission properties such as radiative transition probabilities (Arad), branching ratios (β), radiative lifetimes (τR) and emission cross-sections (σP) for observed emission transitions of emission spectra of these glass matrices. [ABSTRACT FROM AUTHOR]

The problem of glueball–quarkonia–molecule mixing in the scalar sector is discussed, with special attention paid to radiative decays as a tool to discriminate between various assignements for the observed states. [ABSTRACT FROM AUTHOR]

In a recent paper, we have calculated the effect of thermal and zero-point fluctuations on the 1S to 1P optical transition of the electron bubble in superfluid helium. We obtained a line shape that was in good agreement with the experimental results of Grimes and Adams (Phys. Rev. 45, 2305 (1992)). Here we extend these calculations to consider the line shape for the 1S to 2P transition and compare the results with the data of Zipfel and Sanders. © 2006 American Institute of Physics [ABSTRACT FROM AUTHOR]

The [sup 12]C(↘, ²He)[sup 12]B measurement by Okamura et al. has shown that the spindipole resonance bump at E[sub χ] ... 7.5 MeV in [sup 12]B is most probably due mainly to the 2[sup -] states. This fact disagrees with the widely accepted assignment as 1[sup -]. Motivated by this work we studied the spin-parity of the mirror state located at E[sub χ] ... 7 MeV in [sup 12]N by measuring a complete set of polarization transfer (PT) coeffcients for the [sup 12]C(&prarr;, &brarr;)[sup 12]N reaction at 0°. We employed a 300 MeV polarized proton beam and the NTOF facility at the Research Center for Nuclear Physics. The PT coefficients enable us to disentangle the bump into spin-parity components as 1[sup -, sub δS=0] : 1[sup -, sub δS=1 = 0.08±0.02: 0.17±0.04: 0.75±0.04 in a plane-wave impulse approximation neglecting the contribution of the 0[sup -] states. This result clearly indicates that the dominant component of the bump is due to the 2[sup -] states and strongly supports the conclusion of Okamura et al. [ABSTRACT FROM AUTHOR]