45632181
Observation of the scalar Aharonov-Bohm effect by neutron interferometry.
Two calculations are presented that clarify how the density profile equilibrates near the liquid-vapor critical point. Both use the equation of heat transfer recently improved to account for the large compressibility near the critical point. Previous work by others indicated that in one dimension the slowest mode of this equation relaxes at a rate four times faster than that predicted by the older, usual equation of heat transfer. However, this is not always true in higher dimensions. The first calculation demonstrates this for the cases of isobaric modes excited by temperature gradients in a rectangle and in a thin disk. For thin experimental cells with isothermal walls the slowest mode is accurately estimated by the usual heat-transfer equation
107462674
Length saving in TESLA structure by relocation of tuner
120274550
Neutron interferometric search for quaternions in quantum mechanics
En suivant une proposition d'Asher Peres, on realise une experience d'interferometrie de neutrons, en cherchant des contributions non communicatives de quaternions a l'amplitude de diffusion neutron-noyau. En utilisant des barreaux de Ti et Al, on trouve que les dephasages subis par un des faisceaux de l'interferometre est invariant quand on echange les 2 barres (a une precision de 1 pour 30000)
122521135
Photo induced depopulation of the Ta-180m isomer via low lying intermediate states: Structure and astrophysical implications
119838999
Summary of experience with industrial superconducting main magnet production for HERA
For HERA (Hadron Electron Ring Accelerator) a total of 453 superconducting dipoles and 246 superconducting quadrupoles has been built by European industry. During the first stage of the fabrication period several technical improvements turned out to be necessary. All magnets have been carefully checked mechanically, optically, and electrically, and have been cold-tested at DESY. The result of these checks gives a good overview of the fabrication quality and gives hints for possible improvements for future superconducting accelerator magnet fabrication. The reproducibility achieved during mass production is very high. The rejection rate for nonconformity with specification was 7.2% overall. >
139426714
Hydroforming of seamless niobium cavity of tesla shape
9971796
Primordial spectral indices from generalized Einstein theories.
Primordial spectral indices are calculated to second order in slow-roll parameters for three closely related models of inflation, all of which contain a scalar field nonminimally coupled to the Ricci curvature scalar. In most cases, ${\mathit{n}}_{\mathit{s}}$ may be written as a function of the nonminimal curvature coupling strength \ensuremath{\xi} alone, with ${\mathit{n}}_{\mathit{s}}$(\ensuremath{\xi})\ensuremath{\le}1, although the constraints on \ensuremath{\xi} differ greatly between ``new inflation'' and ``chaotic inflation'' initial conditions. Under ``new inflation'' initial conditions, there are discrepancies between the values of ${\mathit{n}}_{\mathit{s}}$ as calculated in the Einstein frame and the Jordan frame. The sources for these discrepancies are addressed, and shown to have negligible effects on the numerical predictions for ${\mathit{n}}_{\mathit{s}}$. No such discrepancies affect the calculations under ``chaotic inflation'' initial conditions.