halo nucleusHelium-8 (He) is the most neutron-rich helium isotope that can be synthesized on Earth: it consists of two protons and six neutrons, and remains stable for an average of 0.2 seconds. Unlike the abundant helium isotope, He, which has the two neutrons packed closely with two ...
An atom consists of a tiny core called the "nucleus" with attendant electrons circling round it. The hydrogen atom, which is the simplest and lightest, has only one electron. Heavier atoms have more and more as they go up the scale. The first discovery that had to do with what goes on...
To calculate the expected flux of antinuclei near Earth, one needs to precisely know the antinucleus formation and annihilation probabilities in the Galaxy. The formation probability of light antinuclei (up to mass numberA = 4) is currently studied at accelerators. By now, several models su...
Resonance conditions for the spectral function and single-hole states in finite nuclei An equation for the spectroscopic amplitudes in finite nuclei is determined both in the discrete and in the continuous spectrum of the residual nucleus ham... S Boffi,F Capuzzi - 《Nuclear Physics A》 被引量...
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experiments shooting alpha particles into a gold foil. Based on these results he could set up a model of the atom in which the atom consisted of a heavy nucleus with a positive charge surrounded by negatively charged electrons like a small solar system. Also this model was in conflict with ...
Howard was not the first to write TheM6tirs~tllmc ight have keen a nucleus and unifying force which would have unitedsuchnativedefenderosf IheWestas theCreeand the Blackfeet. Such a nadve favourably of Riel and his cause. French Canadian historians had always been sympathetic. And in 1936,...
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When an atom is knocked out of place by an alpha particle or recoil nucleus, a vacancy is left, but the ejected atom can create an obstruction when deposited in a diffusion path. However, as the diffusion is isotropic, this obstruction effect can be neglected because the obstructing atom can...
For the fluoroquinolone part, the 13C-NMR spectra of compound 4 contained a doublet (1JC-F = 250 Hz) at ~150 ppm for C-6 (C4 for compound 5); which indicated the presence of the fluoroquinolone nucleus in all of these compounds. This was also confirmed from depth analysis. The ...