Journal ArticleDOI
Theory of Disintegration of Nuclei by Neutrons
TLDR
The large probability of nuclear disintegration byslow neutrons as well as the large cross section for the elastic scattering of slow neutrons can be explained without any new assumption.Abstract:
The large probability of nuclear disintegration by slow neutrons as well as the large cross section for the elastic scattering of slow neutrons can be explained without any new assumption. Interaction between neutron and nucleus is assumed to be only present when the neutron is inside the nucleus or very near its boundary. The rate of change of the potential energy of the neutron at the boundary of the nucleus is important for the quantitative, but not for the qualitative results; in agreement with other data, it has been assumed that the potential drops to $\frac{1}{e}$ in a distance 1.5.${10}^{\ensuremath{-}13}$ cm (range of the forces between neutron and nucleus).read more
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Journal ArticleDOI
Feshbach resonances in ultracold gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Feshbach Resonances in Ultracold Gases
TL;DR: Feshbach resonances are the essential tool to control the interaction between atoms in ultracold quantum gases and have found numerous experimental applications, opening up the way to important breakthroughs as mentioned in this paper.
Journal ArticleDOI
Experiments and theory in cold and ultracold collisions
TL;DR: In this article, the authors review progress in understanding the nature of atomic collisions occurring at temperatures ranging from the millidegrees Kelvin to the nanodegree Kelvin regime, including advances in experiments with atom beams, light traps, and purely magnetic traps.
Journal ArticleDOI
Quantum-State Controlled Chemical Reactions of Ultracold Potassium-Rubidium Molecules
Silke Ospelkaus,Kang-Kuen Ni,Dajun Wang,M. H. G. de Miranda,Brian Neyenhuis,Goulven Quéméner,Paul S. Julienne,John L. Bohn,Deborah Jin,Jun Ye +9 more
TL;DR: Experimental evidence for exothermic atom-exchange chemical reactions is reported, starting with an optically trapped near–quantum-degenerate gas of polar 40K87Rb molecules prepared in their absolute ground state.
Journal ArticleDOI
Neutron Capture and Nuclear Constitution
TL;DR: In fact, almost any type of nuclear reactions consistent with energy conservation seems likely to occur in close nuclear collisions as mentioned in this paper, and the typical features of nuclear reaction are therefore perhaps most clearly shown by neutron impacts.