Improved Nearside-Farside Decomposition of Elastic Scattering Amplitudes

A simple technique is described, that provides improved nearside-farside (NF) decompositions of elastic scattering amplitudes. The technique, involving the resummation of a Legendre partial wave series, reduces the importance of unphysical contributions to NF subamplitudes, which can arise in more conventional NF decompositions. Applications are made to a strong absorption model and to a $^{16}$O + $^{12}$C optical potential at $E_{\text{lab}} = 132$ MeV.Comment: 5 pages, 2 figure

Refractive elastic scattering of carbon and oxygen nuclei: The mean field analysis and Airy structures

The experimental data on the $^{16}$O$+^{12}$C and $^{18}$O$+^{12}$C elastic scatterings and their optical model analysis are presented. Detailed and complete elastic angular distributions have been measured at the Strasbourg Vivitron accelerator at several energies covering the energy range between 5 and 10 MeV per nucleon. The elastic scattering angular distributions show the usual diffraction pattern and also, at larger angles, refractive effects in the form of nuclear rainbow and associated Airy structures. The optical model analysis unambiguously shows the evolution of the refractive scattering pattern. The observed structure, namely the Airy minima, can be consistently described by a nucleus-nucleus potential with a deep real part and a weakly absorptive imaginary part. The difference in absorption in the two systems is explained by an increased imaginary (mostly surface) part of the potential in the $^{18}$O$+^{12}$C system. The relation between the obtained potentials and those reported for the symmetrical $^{16}$O$+^{16}$O and $^{12}$C$+^{12}$C systems is drawn.Comment: 10 pages, 9 figures, Phys. rev. C in pres

Global Outsourcing of Human Capital and the Incidence of Unemployment in the United States

The study is the first to examine empirically the impact of the new wave of global job outsourcing on skill-specific patterns of involuntary unemployment in the U.S. using the latest individual-level data. The estimates from a probit model show that, so far, global human-capital outsourcing has not shifted the risk of unemployment from lower-skilled to higher-skilled American workers. Overall, the probability of involuntary unemployment is negatively related with the worker’s level of education. For the outsourceable occupations, however, high-skilled workers are currently at a greater risk of unemployment than those with lower skills.

The Rise in Female Smoking in Russia: What to Do?

Using the latest data (2009) and one historic year (2000) from a Russian nationally representative household survey, a tobit demand model is estimated to examine influences on both the decision to smoke and the quantity of cigarettes bought by Russian women of working age over the past decade. Our results suggest that better educated women smoke significantly less. The estimated price elasticity of women’s demand for cigarettes (?0.541) implies that a moderate excise or “sin” tax on cigarettes combined with rising female education levels could effectively halt the recent rise in female cigarette consumption.smoking, demand for cigarettes, Russia, transnational tobacco companies