Compressibility probed by linear momentum transfer

Compressibility probed by linear momentum transfer.

The linear momentum transfer occurring in central heavy ion collisions is studied within the Landau Vlasov model. A sensitivity to the Equation Of State is found for this observable. Assuming the free nucleon-nucleon cross section, a soft compressibility modulus (around 210 MeV) is required to reproduce the large amount of data available for linear momentum transfer. This result stands for loca...

Electron Momentum Distributions in Elemental Semiconductors Probed by Positrons

Momentum transfer for momentum transfer-free which-path experiments

Bohr’s principle of complementarity constitutes the hallmark and one of the most intriguing features of quantum mechanics. On the basis of this principle [1, 2] it is indeed universally accepted that any devices capable of determining the path taken by a particle trough a Young like double-aperture must destroy the interference. The justification usually presented is based on Heisenberg’s uncer...

Protein conformational dynamics probed by single-molecule electron transfer.

Electron transfer is used as a probe for angstrom-scale structural changes in single protein molecules. In a flavin reductase, the fluorescence of flavin is quenched by a nearby tyrosine residue by means of photo-induced electron transfer. By probing the fluorescence lifetime of the single flavin on a photon-by-photon basis, we were able to observe the variation of flavin-tyrosine distance over...

Momentum Transfer within Canopies

To understand the basic characteristics of the observed S-shaped wind profile and the exponential flux profile within forest canopies, three hypotheses are postulated. The relationship between these fundamental profiles is well established by combining the postulated hypotheses with momentum equations. Robust agreements between theoretical predictions and observations indicate that the nature o...