Thermonuclear reaction rates from (p, n) reactions on targets with A = 92-122

From the experimentally measured (p,n) cross-sections for 92,94Zr,93Nb,95,96,98Mo,103Rh,107,109Ag,110Pd,115In,117,122Sn nuclides, for proton energies below 7 MeV, thermonuclear reaction rates in the temperature range 1≤T9≤5(T9=109 K) have been extracted. These reaction rates have been fitted to a three parameter empirical expression proposed by Fowler

Entrance channel dependence in compound nuclear reactions with loosely bound nuclei

The measurement of light charged particles evaporated from the reaction 6,7Li+6Li has been carried out at extreme backward angle in the energy range 14 - 20 MeV. Calculations from the code ALICE91 show that the symmetry of the target-projectile combination and the choice of level density parameter play important roles in explaining the evaporation spectra for these light particle systems. In above barrier energy region the fusion cross-section is not suppressed for these loosely bound nuclei.Comment: 2 pages, 1 figur

Charm Offensive Or \u27Axis Of Evil\u27? An Analysis Of The Iranian Nuclear Program And American Responses

This paper assesses the likelihood that Iran’s nuclear program poses a threat to American foreign-policy interests and the extent to which the American response has succeeded in reducing this threat. The researcher conducted this assessment using publicly available data from governmental or intergovernmental agencies such as the IAEA and the CIA, think tanks such as the Brookings Institute, and contemporary press reports. The findings indicate that Iran’s nuclear program has some military aspects, which might pose a threat to American security interests either by emboldening the Iranian leadership to engage in brinksmanship or by increasing the Israeli perception of Iran as a threat. This threat appears to be exacerbated by the failure of most American responses to reduce the threat from the nuclear program, with the partial exceptions of the sanctions regimes and cyberwarfare tactics applied to Iran

Heavy-ion induced fission reactions at near-barrier energies - What have we learnt?

Systematic studies of heavy-ion induced fission reactions at near-barrier energies carried out in the last decade have brought out many interesting aspects of fission process in general. The recent experimental findings which show dependence of fission fragment angular distributions on entrance channel, shape, size and spin of the interacting nuclei and shell closure of the intermediate compound nucleus are summarised in the present paper