34 research outputs found
The Helioseismic and Magnetic Imager (HMI) Investigation for the Solar Dynamics Observatory (SDO)
Twist mode in atomic Fermi gases
The quantum-kinetic energy of a finite number of trapped fermionic atoms provides a restoring force for shear motion due to a distortion of the momentum distribution. In analogy to the twist mode of nuclear physics, it is proposed that counter rotating the upper and lower hemisphere of a spherical atomic cloud yields a finite-frequency mode closely related to transverse zero sound waves in bulk Fermi liquids
Efeitos do thidiazuron e do ácido giberélico nas características dos cachos e bagas de uvas 'niagara rosada' na região de Jundiaí-SP
Efeitos de reguladores vegetais na qualidade de uvas 'Niagara Rosada' na região Noroeste do Estado de São Paulo
Mathematical modelling of the heat and moisture diffusion in a dairy powder particle with crystallisation phase change within the particle matrix
Nuclear targets, recoil ion catchers and reaction chambers
The main features of nuclear targets, recoil ion catchers and reaction chambers used in nuclear spectroscopic investigations involving in-beam multi-e-gamma spectrometers are discussed. The relative importance of the F-ray background due to the accelerated ion-target and the recoil-ion-target interaction is estimated. Its impact on the prompt low-energy electron measurements is stressed. Finally a few general features of the interplay between accelerated ion beams, targets and recoil ion catchers particularly relevant for these measurements are broadly discussed and illustrated with typical examples of in-beam e-gamma studies. (C) 1998 Elsevier Science B.V. All rights reserved