Results 341 to 350 of about 6,857,496 (360)

Effects of temperature on the structure of neutron stars at high temperature

General Relativity and Gravitation, 2017
In Newtonian physics, higher temperature leads to higher thermal pressure, which provides stronger support against the gravitational contraction of stars. However, in the temperature range of tens of MeV involved in the evolution of a proto-neutron star or a higher massive neutron star, the effects of temperature are richer.
Liang-gui Zhu, Jun-Li Lu, Li Wang
openaire   +1 more source

Neutron Diffraction Study of Water At High Temperature

Europhysics Letters (EPL), 1992
Neutron diffraction measurements on water at T = 523 K are presented. The comparison with room temperature data shows an evident weakening of the tetrahedral coordination. This effect has been accurately simulated by an ensemble of polarizable water molecules, interacting via the NEMO (Non Empirical Molecular Orbital) potential model.
U. Buontempo, POSTORINO, Paolo, M. A. Ricci, A. K. Soper   +3 more
openaire   +3 more sources

Analysis of neutron-temperature oscilations in neutron multiplying systems with delayed neutrons

2017
???????????????? ?????????????? ?? ?????????????? ???????????????? ?? ???????????????????? ?????????????????????????????? ?????????????? ?????????????????? ?????????????????? ?? ???????????????????????? ??????????????????. ?????????????????? ?????????????????????? ?????????????? ?? ???????????? ???????????????? ?? ???????????? ???? ??????????j??????, ??
Vodyanitskii, A.A., Rudakov, V.A.
openaire   +1 more source

A low-temperature Weissenberg camera for neutrons

Journal of Applied Crystallography, 1981
The construction and performance of a neutron Weissenberg camera for temperatures down to 4 K is described. Exposure times are similar to the X-ray case. The background from the cryostat walls can be eliminated. Examples of applications in the fields of magnetic structures which are incommensurate with their chemical unit cells, crystallographic phase ...
D. Hohlwein, A. F. Wright
openaire   +1 more source

Neutron Capture Data at Stellar Temperatures

Reviews of Modern Physics, 1965
Neutron capture cross sections are averaged over Maxwell-Boltzmann neutron distributions for temperatures pertinent to slow nucleosynthesis ($s$ process) in red giant stars. Such cross sections, together with isotopic abundances, provide the major quantitative experimental tests of the theory.
R. L. MACKLIN, J. H. GIBBONS
openaire   +1 more source

On the growth of temperature within neutron stars

Astrophysics, 1979
Analytic expressions are obtained that describe the variation of the temperature in the degenerate layers of the shell of a neutron star with electron heat conduction. The relativistic expression is used for the coefficient of thermal conductivity, and a possible crystallization of the ions is taken into account. For a neutron star with solar mass of 1
V. A. Urpin, D. G. Yakovlev
openaire   +1 more source

Temperature measurement by neutron resonance radiography

Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 1989
Abstract We present a new method of data analysis for determination of temperature from the Doppler broadening of neutron resonance absorption cross sections. The method is model independent and simple to use. It has been applied to measurements on samples of rhenium and tantalum and has given temperatures to an accuracy better than ±1°C.
J. Mayers, G. Baciocco, A.C. Hannon
openaire   +1 more source

Low temperature neutron irradiation of niobium

Scripta Metallurgica, 1976
A study was made to determine the effect of low temperature neutron irradiation and post-irradiation annealing on the yield stress of low and intermediate oxygen content niobium. The results are compared with previous results to determine the type of neutron-produced defect that causes the changes in the yield stress. 12 references. (JFP)
F Vanoni, R.J Arsenault
openaire   +1 more source

Apparent temperatures of neutron-poor and neutron-rich compound nuclei

Physical Review C, 2023
A. B. McIntosh, K. Hagel, L. A. McIntosh, R. Wada, J. Gauthier, P. J. Cammarata, A. Keeler, A. Abbott, A. Hannaman, B. Harvey, A. Jedele, Y. W. Lui, L. W. May, M. Sorensen, M. Youngs, A. Zarrella, S. J. Yennello   +16 more
openaire   +1 more source

Temperature vs. impedance dependencies of neutron-irradiated nanocrystalline silicon carbide (3C-SiC)

Applied Physics A, 2018
E. Huseynov, Anze Jazbec, L. Snoj
semanticscholar   +1 more source